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Merge branch 'akpm' (patches from Andrew) 

Merge yet more updates from Andrew Morton:
 "This is the post-linux-next queue. Material which was based on or
  dependent upon material which was in -next.

  69 patches.

  Subsystems affected by this patch series: mm (migration and zsmalloc),
  sysctl, proc, and lib"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (69 commits)
  mm: hide the FRONTSWAP Kconfig symbol
  frontswap: remove support for multiple ops
  mm: mark swap_lock and swap_active_head static
  frontswap: simplify frontswap_register_ops
  frontswap: remove frontswap_test
  mm: simplify try_to_unuse
  frontswap: remove the frontswap exports
  frontswap: simplify frontswap_init
  frontswap: remove frontswap_curr_pages
  frontswap: remove frontswap_shrink
  frontswap: remove frontswap_tmem_exclusive_gets
  frontswap: remove frontswap_writethrough
  mm: remove cleancache
  lib/stackdepot: always do filter_irq_stacks() in stack_depot_save()
  lib/stackdepot: allow optional init and stack_table allocation by kvmalloc()
  proc: remove PDE_DATA() completely
  fs: proc: store PDE()->data into inode->i_private
  zsmalloc: replace get_cpu_var with local_lock
  zsmalloc: replace per zpage lock with pool->migrate_lock
  locking/rwlocks: introduce write_lock_nested
  ...
This commit is contained in:
Linus Torvalds 2022-01-22 11:28:23 +02:00
parent 8205ae327e 6e61dde82e
commit 1c52283265
172 changed files with 1765 additions and 2819 deletions
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296
Documentation/vm/cleancache.rst
View File

@ -1,296 +0,0 @@
.. _cleancache:
==========
Cleancache
==========
Motivation
==========
Cleancache is a new optional feature provided by the VFS layer that
potentially dramatically increases page cache effectiveness for
many workloads in many environments at a negligible cost.
Cleancache can be thought of as a page-granularity victim cache for clean
pages that the kernel's pageframe replacement algorithm (PFRA) would like
to keep around, but can't since there isn't enough memory. So when the
PFRA "evicts" a page, it first attempts to use cleancache code to
put the data contained in that page into "transcendent memory", memory
that is not directly accessible or addressable by the kernel and is
of unknown and possibly time-varying size.
Later, when a cleancache-enabled filesystem wishes to access a page
in a file on disk, it first checks cleancache to see if it already
contains it; if it does, the page of data is copied into the kernel
and a disk access is avoided.
Transcendent memory "drivers" for cleancache are currently implemented
in Xen (using hypervisor memory) and zcache (using in-kernel compressed
memory) and other implementations are in development.
:ref:`FAQs <faq>` are included below.
Implementation Overview
=======================
A cleancache "backend" that provides transcendent memory registers itself
to the kernel's cleancache "frontend" by calling cleancache_register_ops,
passing a pointer to a cleancache_ops structure with funcs set appropriately.
The functions provided must conform to certain semantics as follows:
Most important, cleancache is "ephemeral". Pages which are copied into
cleancache have an indefinite lifetime which is completely unknowable
by the kernel and so may or may not still be in cleancache at any later time.
Thus, as its name implies, cleancache is not suitable for dirty pages.
Cleancache has complete discretion over what pages to preserve and what
pages to discard and when.
Mounting a cleancache-enabled filesystem should call "init_fs" to obtain a
pool id which, if positive, must be saved in the filesystem's superblock;
a negative return value indicates failure. A "put_page" will copy a
(presumably about-to-be-evicted) page into cleancache and associate it with
the pool id, a file key, and a page index into the file. (The combination
of a pool id, a file key, and an index is sometimes called a "handle".)
A "get_page" will copy the page, if found, from cleancache into kernel memory.
An "invalidate_page" will ensure the page no longer is present in cleancache;
an "invalidate_inode" will invalidate all pages associated with the specified
file; and, when a filesystem is unmounted, an "invalidate_fs" will invalidate
all pages in all files specified by the given pool id and also surrender
the pool id.
An "init_shared_fs", like init_fs, obtains a pool id but tells cleancache
to treat the pool as shared using a 128-bit UUID as a key. On systems
that may run multiple kernels (such as hard partitioned or virtualized
systems) that may share a clustered filesystem, and where cleancache
may be shared among those kernels, calls to init_shared_fs that specify the
same UUID will receive the same pool id, thus allowing the pages to
be shared. Note that any security requirements must be imposed outside
of the kernel (e.g. by "tools" that control cleancache). Or a
cleancache implementation can simply disable shared_init by always
returning a negative value.
If a get_page is successful on a non-shared pool, the page is invalidated
(thus making cleancache an "exclusive" cache). On a shared pool, the page
is NOT invalidated on a successful get_page so that it remains accessible to
other sharers. The kernel is responsible for ensuring coherency between
cleancache (shared or not), the page cache, and the filesystem, using
cleancache invalidate operations as required.
Note that cleancache must enforce put-put-get coherency and get-get
coherency. For the former, if two puts are made to the same handle but
with different data, say AAA by the first put and BBB by the second, a
subsequent get can never return the stale data (AAA). For get-get coherency,
if a get for a given handle fails, subsequent gets for that handle will
never succeed unless preceded by a successful put with that handle.
Last, cleancache provides no SMP serialization guarantees; if two
different Linux threads are simultaneously putting and invalidating a page
with the same handle, the results are indeterminate. Callers must
lock the page to ensure serial behavior.
Cleancache Performance Metrics
==============================
If properly configured, monitoring of cleancache is done via debugfs in
the `/sys/kernel/debug/cleancache` directory. The effectiveness of cleancache
can be measured (across all filesystems) with:
``succ_gets``
number of gets that were successful
``failed_gets``
number of gets that failed
``puts``
number of puts attempted (all "succeed")
``invalidates``
number of invalidates attempted
A backend implementation may provide additional metrics.
.. _faq:
FAQ
===
* Where's the value? (Andrew Morton)
Cleancache provides a significant performance benefit to many workloads
in many environments with negligible overhead by improving the
effectiveness of the pagecache. Clean pagecache pages are
saved in transcendent memory (RAM that is otherwise not directly
addressable to the kernel); fetching those pages later avoids "refaults"
and thus disk reads.
Cleancache (and its sister code "frontswap") provide interfaces for
this transcendent memory (aka "tmem"), which conceptually lies between
fast kernel-directly-addressable RAM and slower DMA/asynchronous devices.
Disallowing direct kernel or userland reads/writes to tmem
is ideal when data is transformed to a different form and size (such
as with compression) or secretly moved (as might be useful for write-
balancing for some RAM-like devices). Evicted page-cache pages (and
swap pages) are a great use for this kind of slower-than-RAM-but-much-
faster-than-disk transcendent memory, and the cleancache (and frontswap)
"page-object-oriented" specification provides a nice way to read and
write -- and indirectly "name" -- the pages.
In the virtual case, the whole point of virtualization is to statistically
multiplex physical resources across the varying demands of multiple
virtual machines. This is really hard to do with RAM and efforts to
do it well with no kernel change have essentially failed (except in some
well-publicized special-case workloads). Cleancache -- and frontswap --
with a fairly small impact on the kernel, provide a huge amount
of flexibility for more dynamic, flexible RAM multiplexing.
Specifically, the Xen Transcendent Memory backend allows otherwise
"fallow" hypervisor-owned RAM to not only be "time-shared" between multiple
virtual machines, but the pages can be compressed and deduplicated to
optimize RAM utilization. And when guest OS's are induced to surrender
underutilized RAM (e.g. with "self-ballooning"), page cache pages
are the first to go, and cleancache allows those pages to be
saved and reclaimed if overall host system memory conditions allow.
And the identical interface used for cleancache can be used in
physical systems as well. The zcache driver acts as a memory-hungry
device that stores pages of data in a compressed state. And
the proposed "RAMster" driver shares RAM across multiple physical
systems.
* Why does cleancache have its sticky fingers so deep inside the
filesystems and VFS? (Andrew Morton and Christoph Hellwig)
The core hooks for cleancache in VFS are in most cases a single line
and the minimum set are placed precisely where needed to maintain
coherency (via cleancache_invalidate operations) between cleancache,
the page cache, and disk. All hooks compile into nothingness if
cleancache is config'ed off and turn into a function-pointer-
compare-to-NULL if config'ed on but no backend claims the ops
functions, or to a compare-struct-element-to-negative if a
backend claims the ops functions but a filesystem doesn't enable
cleancache.
Some filesystems are built entirely on top of VFS and the hooks
in VFS are sufficient, so don't require an "init_fs" hook; the
initial implementation of cleancache didn't provide this hook.
But for some filesystems (such as btrfs), the VFS hooks are
incomplete and one or more hooks in fs-specific code are required.
And for some other filesystems, such as tmpfs, cleancache may
be counterproductive. So it seemed prudent to require a filesystem
to "opt in" to use cleancache, which requires adding a hook in
each filesystem. Not all filesystems are supported by cleancache
only because they haven't been tested. The existing set should
be sufficient to validate the concept, the opt-in approach means
that untested filesystems are not affected, and the hooks in the
existing filesystems should make it very easy to add more
filesystems in the future.
The total impact of the hooks to existing fs and mm files is only
about 40 lines added (not counting comments and blank lines).
* Why not make cleancache asynchronous and batched so it can more
easily interface with real devices with DMA instead of copying each
individual page? (Minchan Kim)
The one-page-at-a-time copy semantics simplifies the implementation
on both the frontend and backend and also allows the backend to
do fancy things on-the-fly like page compression and
page deduplication. And since the data is "gone" (copied into/out
of the pageframe) before the cleancache get/put call returns,
a great deal of race conditions and potential coherency issues
are avoided. While the interface seems odd for a "real device"
or for real kernel-addressable RAM, it makes perfect sense for
transcendent memory.
* Why is non-shared cleancache "exclusive"? And where is the
page "invalidated" after a "get"? (Minchan Kim)
The main reason is to free up space in transcendent memory and
to avoid unnecessary cleancache_invalidate calls. If you want inclusive,
the page can be "put" immediately following the "get". If
put-after-get for inclusive becomes common, the interface could
be easily extended to add a "get_no_invalidate" call.
The invalidate is done by the cleancache backend implementation.
* What's the performance impact?
Performance analysis has been presented at OLS'09 and LCA'10.
Briefly, performance gains can be significant on most workloads,
especially when memory pressure is high (e.g. when RAM is
overcommitted in a virtual workload); and because the hooks are
invoked primarily in place of or in addition to a disk read/write,
overhead is negligible even in worst case workloads. Basically
cleancache replaces I/O with memory-copy-CPU-overhead; on older
single-core systems with slow memory-copy speeds, cleancache
has little value, but in newer multicore machines, especially
consolidated/virtualized machines, it has great value.
* How do I add cleancache support for filesystem X? (Boaz Harrash)
Filesystems that are well-behaved and conform to certain
restrictions can utilize cleancache simply by making a call to
cleancache_init_fs at mount time. Unusual, misbehaving, or
poorly layered filesystems must either add additional hooks
and/or undergo extensive additional testing... or should just
not enable the optional cleancache.
Some points for a filesystem to consider:
- The FS should be block-device-based (e.g. a ram-based FS such
as tmpfs should not enable cleancache)
- To ensure coherency/correctness, the FS must ensure that all
file removal or truncation operations either go through VFS or
add hooks to do the equivalent cleancache "invalidate" operations
- To ensure coherency/correctness, either inode numbers must
be unique across the lifetime of the on-disk file OR the
FS must provide an "encode_fh" function.
- The FS must call the VFS superblock alloc and deactivate routines
or add hooks to do the equivalent cleancache calls done there.
- To maximize performance, all pages fetched from the FS should
go through the do_mpag_readpage routine or the FS should add
hooks to do the equivalent (cf. btrfs)
- Currently, the FS blocksize must be the same as PAGESIZE. This
is not an architectural restriction, but no backends currently
support anything different.
- A clustered FS should invoke the "shared_init_fs" cleancache
hook to get best performance for some backends.
* Why not use the KVA of the inode as the key? (Christoph Hellwig)
If cleancache would use the inode virtual address instead of
inode/filehandle, the pool id could be eliminated. But, this
won't work because cleancache retains pagecache data pages
persistently even when the inode has been pruned from the
inode unused list, and only invalidates the data page if the file
gets removed/truncated. So if cleancache used the inode kva,
there would be potential coherency issues if/when the inode
kva is reused for a different file. Alternately, if cleancache
invalidated the pages when the inode kva was freed, much of the value
of cleancache would be lost because the cache of pages in cleanache
is potentially much larger than the kernel pagecache and is most
useful if the pages survive inode cache removal.
* Why is a global variable required?
The cleancache_enabled flag is checked in all of the frequently-used
cleancache hooks. The alternative is a function call to check a static
variable. Since cleancache is enabled dynamically at runtime, systems
that don't enable cleancache would suffer thousands (possibly
tens-of-thousands) of unnecessary function calls per second. So the
global variable allows cleancache to be enabled by default at compile
time, but have insignificant performance impact when cleancache remains
disabled at runtime.
* Does cleanache work with KVM?
The memory model of KVM is sufficiently different that a cleancache
backend may have less value for KVM. This remains to be tested,
especially in an overcommitted system.
* Does cleancache work in userspace? It sounds useful for
memory hungry caches like web browsers. (Jamie Lokier)
No plans yet, though we agree it sounds useful, at least for
apps that bypass the page cache (e.g. O_DIRECT).
Last updated: Dan Magenheimer, April 13 2011

31
Documentation/vm/frontswap.rst
View File

@ -8,12 +8,6 @@ Frontswap provides a "transcendent memory" interface for swap pages.
In some environments, dramatic performance savings may be obtained because
swapped pages are saved in RAM (or a RAM-like device) instead of a swap disk.
(Note, frontswap -- and :ref:`cleancache` (merged at 3.0) -- are the "frontends"
and the only necessary changes to the core kernel for transcendent memory;
all other supporting code -- the "backends" -- is implemented as drivers.
See the LWN.net article `Transcendent memory in a nutshell`_
for a detailed overview of frontswap and related kernel parts)
.. _Transcendent memory in a nutshell: https://lwn.net/Articles/454795/
Frontswap is so named because it can be thought of as the opposite of
@ -45,12 +39,6 @@ a disk write and, if the data is later read back, a disk read are avoided.
If a store returns failure, transcendent memory has rejected the data, and the
page can be written to swap as usual.
If a backend chooses, frontswap can be configured as a "writethrough
cache" by calling frontswap_writethrough(). In this mode, the reduction
in swap device writes is lost (and also a non-trivial performance advantage)
in order to allow the backend to arbitrarily "reclaim" space used to
store frontswap pages to more completely manage its memory usage.
Note that if a page is stored and the page already exists in transcendent memory
(a "duplicate" store), either the store succeeds and the data is overwritten,
or the store fails AND the page is invalidated. This ensures stale data may
@ -87,11 +75,9 @@ This interface is ideal when data is transformed to a different form
and size (such as with compression) or secretly moved (as might be
useful for write-balancing for some RAM-like devices). Swap pages (and
evicted page-cache pages) are a great use for this kind of slower-than-RAM-
but-much-faster-than-disk "pseudo-RAM device" and the frontswap (and
cleancache) interface to transcendent memory provides a nice way to read
and write -- and indirectly "name" -- the pages.
but-much-faster-than-disk "pseudo-RAM device".
Frontswap -- and cleancache -- with a fairly small impact on the kernel,
Frontswap with a fairly small impact on the kernel,
provides a huge amount of flexibility for more dynamic, flexible RAM
utilization in various system configurations:
@ -269,19 +255,6 @@ the old data and ensure that it is no longer accessible. Since the
swap subsystem then writes the new data to the read swap device,
this is the correct course of action to ensure coherency.
* What is frontswap_shrink for?
When the (non-frontswap) swap subsystem swaps out a page to a real
swap device, that page is only taking up low-value pre-allocated disk
space. But if frontswap has placed a page in transcendent memory, that
page may be taking up valuable real estate. The frontswap_shrink
routine allows code outside of the swap subsystem to force pages out
of the memory managed by frontswap and back into kernel-addressable memory.
For example, in RAMster, a "suction driver" thread will attempt
to "repatriate" pages sent to a remote machine back to the local machine;
this is driven using the frontswap_shrink mechanism when memory pressure
subsides.
* Why does the frontswap patch create the new include file swapfile.h?
The frontswap code depends on some swap-subsystem-internal data

1
Documentation/vm/index.rst
View File

@ -15,7 +15,6 @@ algorithms. If you are looking for advice on simply allocating memory, see the
active_mm
arch_pgtable_helpers
balance
cleancache
damon/index
free_page_reporting
frontswap

7
MAINTAINERS
View File

@ -4705,13 +4705,6 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/cla
F: include/linux/cfi.h
F: kernel/cfi.c
CLEANCACHE API
M: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
L: linux-kernel@vger.kernel.org
S: Maintained
F: include/linux/cleancache.h
F: mm/cleancache.c
CLK API
M: Russell King <linux@armlinux.org.uk>
L: linux-clk@vger.kernel.org

4
arch/alpha/kernel/srm_env.c
View File

@ -83,14 +83,14 @@ static int srm_env_proc_show(struct seq_file *m, void *v)
static int srm_env_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, srm_env_proc_show, PDE_DATA(inode));
return single_open(file, srm_env_proc_show, pde_data(inode));
}
static ssize_t srm_env_proc_write(struct file *file, const char __user *buffer,
size_t count, loff_t *pos)
{
int res;
unsigned long id = (unsigned long)PDE_DATA(file_inode(file));
unsigned long id = (unsigned long)pde_data(file_inode(file));
char *buf = (char *) __get_free_page(GFP_USER);
unsigned long ret1, ret2;

1
arch/arm/configs/bcm2835_defconfig
View File

@ -31,7 +31,6 @@ CONFIG_ARCH_BCM2835=y
CONFIG_PREEMPT_VOLUNTARY=y
CONFIG_AEABI=y
CONFIG_KSM=y
CONFIG_CLEANCACHE=y
CONFIG_CMA=y
CONFIG_SECCOMP=y
CONFIG_KEXEC=y

1
arch/arm/configs/qcom_defconfig
View File

@ -27,7 +27,6 @@ CONFIG_PCIE_QCOM=y
CONFIG_SMP=y
CONFIG_PREEMPT=y
CONFIG_HIGHMEM=y
CONFIG_CLEANCACHE=y
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_CPU_IDLE=y

2
arch/arm/kernel/atags_proc.c
View File

@ -13,7 +13,7 @@ struct buffer {
static ssize_t atags_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
struct buffer *b = PDE_DATA(file_inode(file));
struct buffer *b = pde_data(file_inode(file));
return simple_read_from_buffer(buf, count, ppos, b->data, b->size);
}

2
arch/arm/mm/alignment.c
View File

@ -1005,7 +1005,7 @@ static int __init noalign_setup(char *__unused)
__setup("noalign", noalign_setup);
/*
* This needs to be done after sysctl_init, otherwise sys/ will be
* This needs to be done after sysctl_init_bases(), otherwise sys/ will be
* overwritten. Actually, this shouldn't be in sys/ at all since
* it isn't a sysctl, and it doesn't contain sysctl information.
* We now locate it in /proc/cpu/alignment instead.

10
arch/ia64/kernel/salinfo.c
View File

@ -282,7 +282,7 @@ salinfo_event_open(struct inode *inode, struct file *file)
static ssize_t
salinfo_event_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
{
struct salinfo_data *data = PDE_DATA(file_inode(file));
struct salinfo_data *data = pde_data(file_inode(file));
char cmd[32];
size_t size;
int i, n, cpu = -1;
@ -340,7 +340,7 @@ static const struct proc_ops salinfo_event_proc_ops = {
static int
salinfo_log_open(struct inode *inode, struct file *file)
{
struct salinfo_data *data = PDE_DATA(inode);
struct salinfo_data *data = pde_data(inode);
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@ -365,7 +365,7 @@ salinfo_log_open(struct inode *inode, struct file *file)
static int
salinfo_log_release(struct inode *inode, struct file *file)
{
struct salinfo_data *data = PDE_DATA(inode);
struct salinfo_data *data = pde_data(inode);
if (data->state == STATE_NO_DATA) {
vfree(data->log_buffer);
@ -433,7 +433,7 @@ salinfo_log_new_read(int cpu, struct salinfo_data *data)
static ssize_t
salinfo_log_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
{
struct salinfo_data *data = PDE_DATA(file_inode(file));
struct salinfo_data *data = pde_data(file_inode(file));
u8 *buf;
u64 bufsize;
@ -494,7 +494,7 @@ salinfo_log_clear(struct salinfo_data *data, int cpu)
static ssize_t
salinfo_log_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
struct salinfo_data *data = PDE_DATA(file_inode(file));
struct salinfo_data *data = pde_data(file_inode(file));
char cmd[32];
size_t size;
u32 offset;

1
arch/m68k/configs/amiga_defconfig
View File

@ -45,7 +45,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/apollo_defconfig
View File

@ -41,7 +41,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/atari_defconfig
View File

@ -48,7 +48,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/bvme6000_defconfig
View File

@ -38,7 +38,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/hp300_defconfig
View File

@ -40,7 +40,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/mac_defconfig
View File

@ -39,7 +39,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/multi_defconfig
View File

@ -59,7 +59,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/mvme147_defconfig
View File

@ -37,7 +37,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/mvme16x_defconfig
View File

@ -38,7 +38,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/q40_defconfig
View File

@ -39,7 +39,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/sun3_defconfig
View File

@ -35,7 +35,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/m68k/configs/sun3x_defconfig
View File

@ -35,7 +35,6 @@ CONFIG_IOSCHED_BFQ=m
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
# CONFIG_COMPACTION is not set
CONFIG_CLEANCACHE=y
CONFIG_ZPOOL=m
CONFIG_NET=y
CONFIG_PACKET=y

4
arch/powerpc/kernel/proc_powerpc.c
View File

@ -25,7 +25,7 @@ static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes
loff_t *ppos)
{
return simple_read_from_buffer(buf, nbytes, ppos,
PDE_DATA(file_inode(file)), PAGE_SIZE);
pde_data(file_inode(file)), PAGE_SIZE);
}
static int page_map_mmap( struct file *file, struct vm_area_struct *vma )
@ -34,7 +34,7 @@ static int page_map_mmap( struct file *file, struct vm_area_struct *vma )
return -EINVAL;
remap_pfn_range(vma, vma->vm_start,
__pa(PDE_DATA(file_inode(file))) >> PAGE_SHIFT,
__pa(pde_data(file_inode(file))) >> PAGE_SHIFT,
PAGE_SIZE, vma->vm_page_prot);
return 0;
}

1
arch/s390/configs/debug_defconfig
View File

@ -96,7 +96,6 @@ CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_CLEANCACHE=y
CONFIG_FRONTSWAP=y
CONFIG_CMA_DEBUG=y
CONFIG_CMA_DEBUGFS=y

1
arch/s390/configs/defconfig
View File

@ -91,7 +91,6 @@ CONFIG_MEMORY_HOTPLUG=y
CONFIG_MEMORY_HOTREMOVE=y
CONFIG_KSM=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_CLEANCACHE=y
CONFIG_FRONTSWAP=y
CONFIG_CMA_SYSFS=y
CONFIG_CMA_AREAS=7

4
arch/sh/mm/alignment.c
View File

@ -140,7 +140,7 @@ static int alignment_proc_open(struct inode *inode, struct file *file)
static ssize_t alignment_proc_write(struct file *file,
const char __user *buffer, size_t count, loff_t *pos)
{
int *data = PDE_DATA(file_inode(file));
int *data = pde_data(file_inode(file));
char mode;
if (count > 0) {
@ -161,7 +161,7 @@ static const struct proc_ops alignment_proc_ops = {
};
/*
* This needs to be done after sysctl_init, otherwise sys/ will be
* This needs to be done after sysctl_init_bases(), otherwise sys/ will be
* overwritten. Actually, this shouldn't be in sys/ at all since
* it isn't a sysctl, and it doesn't contain sysctl information.
* We now locate it in /proc/cpu/alignment instead.

4
arch/xtensa/platforms/iss/simdisk.c
View File

@ -208,7 +208,7 @@ static int simdisk_detach(struct simdisk *dev)
static ssize_t proc_read_simdisk(struct file *file, char __user *buf,
size_t size, loff_t *ppos)
{
struct simdisk *dev = PDE_DATA(file_inode(file));
struct simdisk *dev = pde_data(file_inode(file));
const char *s = dev->filename;
if (s) {
ssize_t n = simple_read_from_buffer(buf, size, ppos,
@ -225,7 +225,7 @@ static ssize_t proc_write_simdisk(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
char *tmp = memdup_user_nul(buf, count);
struct simdisk *dev = PDE_DATA(file_inode(file));
struct simdisk *dev = pde_data(file_inode(file));
int err;
if (IS_ERR(tmp))

5
block/bdev.c
View File

@ -24,7 +24,6 @@
#include <linux/pseudo_fs.h>
#include <linux/uio.h>
#include <linux/namei.h>
#include <linux/cleancache.h>
#include <linux/part_stat.h>
#include <linux/uaccess.h>
#include "../fs/internal.h"
@ -88,10 +87,6 @@ void invalidate_bdev(struct block_device *bdev)
lru_add_drain_all(); /* make sure all lru add caches are flushed */
invalidate_mapping_pages(mapping, 0, -1);
}
/* 99% of the time, we don't need to flush the cleancache on the bdev.
* But, for the strange corners, lets be cautious
*/
cleancache_invalidate_inode(mapping);
}
EXPORT_SYMBOL(invalidate_bdev);

2
drivers/acpi/proc.c
View File

@ -127,7 +127,7 @@ static int
acpi_system_wakeup_device_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, acpi_system_wakeup_device_seq_show,
PDE_DATA(inode));
pde_data(inode));
}
static const struct proc_ops acpi_system_wakeup_device_proc_ops = {

7
drivers/base/firmware_loader/fallback.c
View File

@ -199,11 +199,16 @@ static struct class firmware_class = {
int register_sysfs_loader(void)
{
return class_register(&firmware_class);
int ret = class_register(&firmware_class);
if (ret != 0)
return ret;
return register_firmware_config_sysctl();
}
void unregister_sysfs_loader(void)
{
unregister_firmware_config_sysctl();
class_unregister(&firmware_class);
}

11
drivers/base/firmware_loader/fallback.h
View File

@ -42,6 +42,17 @@ void fw_fallback_set_default_timeout(void);
int register_sysfs_loader(void);
void unregister_sysfs_loader(void);
#ifdef CONFIG_SYSCTL
extern int register_firmware_config_sysctl(void);
extern void unregister_firmware_config_sysctl(void);
#else
static inline int register_firmware_config_sysctl(void)
{
return 0;
}
static inline void unregister_firmware_config_sysctl(void) { }
#endif /* CONFIG_SYSCTL */
#else /* CONFIG_FW_LOADER_USER_HELPER */
static inline int firmware_fallback_sysfs(struct firmware *fw, const char *name,
struct device *device,

25
drivers/base/firmware_loader/fallback_table.c
View File

@ -4,6 +4,7 @@
#include <linux/kconfig.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/security.h>
#include <linux/highmem.h>
#include <linux/umh.h>
@ -24,7 +25,7 @@ struct firmware_fallback_config fw_fallback_config = {
EXPORT_SYMBOL_NS_GPL(fw_fallback_config, FIRMWARE_LOADER_PRIVATE);
#ifdef CONFIG_SYSCTL
struct ctl_table firmware_config_table[] = {
static struct ctl_table firmware_config_table[] = {
{
.procname = "force_sysfs_fallback",
.data = &fw_fallback_config.force_sysfs_fallback,
@ -45,4 +46,24 @@ struct ctl_table firmware_config_table[] = {
},
{ }
};
#endif
static struct ctl_table_header *firmware_config_sysct_table_header;
int register_firmware_config_sysctl(void)
{
firmware_config_sysct_table_header =
register_sysctl("kernel/firmware_config",
firmware_config_table);
if (!firmware_config_sysct_table_header)
return -ENOMEM;
return 0;
}
EXPORT_SYMBOL_NS_GPL(register_firmware_config_sysctl, FIRMWARE_LOADER_PRIVATE);
void unregister_firmware_config_sysctl(void)
{
unregister_sysctl_table(firmware_config_sysct_table_header);
firmware_config_sysct_table_header = NULL;
}
EXPORT_SYMBOL_NS_GPL(unregister_firmware_config_sysctl, FIRMWARE_LOADER_PRIVATE);
#endif /* CONFIG_SYSCTL */

23
drivers/cdrom/cdrom.c
View File

@ -3691,27 +3691,6 @@ static struct ctl_table cdrom_table[] = {
},
{ }
};
static struct ctl_table cdrom_cdrom_table[] = {
{
.procname = "cdrom",
.maxlen = 0,
.mode = 0555,
.child = cdrom_table,
},
{ }
};
/* Make sure that /proc/sys/dev is there */
static struct ctl_table cdrom_root_table[] = {
{
.procname = "dev",
.maxlen = 0,
.mode = 0555,
.child = cdrom_cdrom_table,
},
{ }
};
static struct ctl_table_header *cdrom_sysctl_header;
static void cdrom_sysctl_register(void)
@ -3721,7 +3700,7 @@ static void cdrom_sysctl_register(void)
if (!atomic_add_unless(&initialized, 1, 1))
return;
cdrom_sysctl_header = register_sysctl_table(cdrom_root_table);
cdrom_sysctl_header = register_sysctl("dev/cdrom", cdrom_table);
/* set the defaults */
cdrom_sysctl_settings.autoclose = autoclose;

22
drivers/char/hpet.c
View File

@ -746,26 +746,6 @@ static struct ctl_table hpet_table[] = {
{}
};
static struct ctl_table hpet_root[] = {
{
.procname = "hpet",
.maxlen = 0,
.mode = 0555,
.child = hpet_table,
},
{}
};
static struct ctl_table dev_root[] = {
{
.procname = "dev",
.maxlen = 0,
.mode = 0555,
.child = hpet_root,
},
{}
};
static struct ctl_table_header *sysctl_header;
/*
@ -1061,7 +1041,7 @@ static int __init hpet_init(void)
if (result < 0)
return -ENODEV;
sysctl_header = register_sysctl_table(dev_root);
sysctl_header = register_sysctl("dev/hpet", hpet_table);
result = acpi_bus_register_driver(&hpet_acpi_driver);
if (result < 0) {

14
drivers/char/random.c
View File

@ -1992,8 +1992,7 @@ static int proc_do_entropy(struct ctl_table *table, int write, void *buffer,
}
static int sysctl_poolsize = POOL_BITS;
extern struct ctl_table random_table[];
struct ctl_table random_table[] = {
static struct ctl_table random_table[] = {
{
.procname = "poolsize",
.data = &sysctl_poolsize,
@ -2055,6 +2054,17 @@ struct ctl_table random_table[] = {
#endif
{ }
};
/*
* rand_initialize() is called before sysctl_init(),
* so we cannot call register_sysctl_init() in rand_initialize()
*/
static int __init random_sysctls_init(void)
{
register_sysctl_init("kernel/random", random_table);
return 0;
}
device_initcall(random_sysctls_init);
#endif /* CONFIG_SYSCTL */
struct batched_entropy {

1
drivers/gpu/drm/drm_dp_mst_topology.c
View File

@ -5511,6 +5511,7 @@ int drm_dp_mst_topology_mgr_init(struct drm_dp_mst_topology_mgr *mgr,
mutex_init(&mgr->probe_lock);
#if IS_ENABLED(CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS)
mutex_init(&mgr->topology_ref_history_lock);
stack_depot_init();
#endif
INIT_LIST_HEAD(&mgr->tx_msg_downq);
INIT_LIST_HEAD(&mgr->destroy_port_list);

4
drivers/gpu/drm/drm_mm.c
View File

@ -980,6 +980,10 @@ void drm_mm_init(struct drm_mm *mm, u64 start, u64 size)
add_hole(&mm->head_node);
mm->scan_active = 0;
#ifdef CONFIG_DRM_DEBUG_MM
stack_depot_init();
#endif
}
EXPORT_SYMBOL(drm_mm_init);

9
drivers/gpu/drm/drm_modeset_lock.c
View File

@ -107,6 +107,11 @@ static void __drm_stack_depot_print(depot_stack_handle_t stack_depot)
kfree(buf);
}
static void __drm_stack_depot_init(void)
{
stack_depot_init();
}
#else /* CONFIG_DRM_DEBUG_MODESET_LOCK */
static depot_stack_handle_t __drm_stack_depot_save(void)
{
@ -115,6 +120,9 @@ static depot_stack_handle_t __drm_stack_depot_save(void)
static void __drm_stack_depot_print(depot_stack_handle_t stack_depot)
{
}
static void __drm_stack_depot_init(void)
{
}
#endif /* CONFIG_DRM_DEBUG_MODESET_LOCK */
/**
@ -359,6 +367,7 @@ void drm_modeset_lock_init(struct drm_modeset_lock *lock)
{
ww_mutex_init(&lock->mutex, &crtc_ww_class);
INIT_LIST_HEAD(&lock->head);
__drm_stack_depot_init();
}
EXPORT_SYMBOL(drm_modeset_lock_init);

22
drivers/gpu/drm/i915/i915_perf.c
View File

@ -4273,26 +4273,6 @@ static struct ctl_table oa_table[] = {
{}
};
static struct ctl_table i915_root[] = {
{
.procname = "i915",
.maxlen = 0,
.mode = 0555,
.child = oa_table,
},
{}
};
static struct ctl_table dev_root[] = {
{
.procname = "dev",
.maxlen = 0,
.mode = 0555,
.child = i915_root,
},
{}
};
static void oa_init_supported_formats(struct i915_perf *perf)
{
struct drm_i915_private *i915 = perf->i915;
@ -4488,7 +4468,7 @@ static int destroy_config(int id, void *p, void *data)
int i915_perf_sysctl_register(void)
{
sysctl_header = register_sysctl_table(dev_root);
sysctl_header = register_sysctl("dev/i915", oa_table);
return 0;
}

3
drivers/gpu/drm/i915/intel_runtime_pm.c
View File

@ -68,6 +68,9 @@ static noinline depot_stack_handle_t __save_depot_stack(void)
static void init_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm)
{
spin_lock_init(&rpm->debug.lock);
if (rpm->available)
stack_depot_init();
}
static noinline depot_stack_handle_t

4
drivers/hwmon/dell-smm-hwmon.c
View File

@ -451,7 +451,7 @@ static int i8k_get_power_status(void)
static long i8k_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
{
struct dell_smm_data *data = PDE_DATA(file_inode(fp));
struct dell_smm_data *data = pde_data(file_inode(fp));
int __user *argp = (int __user *)arg;
int speed, err;
int val = 0;
@ -585,7 +585,7 @@ static int i8k_proc_show(struct seq_file *seq, void *offset)
static int i8k_open_fs(struct inode *inode, struct file *file)
{
return single_open(file, i8k_proc_show, PDE_DATA(inode));
return single_open(file, i8k_proc_show, pde_data(inode));
}
static const struct proc_ops i8k_proc_ops = {

24
drivers/macintosh/mac_hid.c
View File

@ -239,33 +239,11 @@ static struct ctl_table mac_hid_files[] = {
{ }
};
/* dir in /proc/sys/dev */
static struct ctl_table mac_hid_dir[] = {
{
.procname = "mac_hid",
.maxlen = 0,
.mode = 0555,
.child = mac_hid_files,
},
{ }
};
/* /proc/sys/dev itself, in case that is not there yet */
static struct ctl_table mac_hid_root_dir[] = {
{
.procname = "dev",
.maxlen = 0,
.mode = 0555,
.child = mac_hid_dir,
},
{ }
};
static struct ctl_table_header *mac_hid_sysctl_header;
static int __init mac_hid_init(void)
{
mac_hid_sysctl_header = register_sysctl_table(mac_hid_root_dir);
mac_hid_sysctl_header = register_sysctl("dev/mac_hid", mac_hid_files);
if (!mac_hid_sysctl_header)
return -ENOMEM;

8
drivers/net/bonding/bond_procfs.c
View File

@ -11,7 +11,7 @@
static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
__acquires(RCU)
{
struct bonding *bond = PDE_DATA(file_inode(seq->file));
struct bonding *bond = pde_data(file_inode(seq->file));
struct list_head *iter;
struct slave *slave;
loff_t off = 0;
@ -30,7 +30,7 @@ static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct bonding *bond = PDE_DATA(file_inode(seq->file));
struct bonding *bond = pde_data(file_inode(seq->file));
struct list_head *iter;
struct slave *slave;
bool found = false;
@ -57,7 +57,7 @@ static void bond_info_seq_stop(struct seq_file *seq, void *v)
static void bond_info_show_master(struct seq_file *seq)
{
struct bonding *bond = PDE_DATA(file_inode(seq->file));
struct bonding *bond = pde_data(file_inode(seq->file));
const struct bond_opt_value *optval;
struct slave *curr, *primary;
int i;
@ -175,7 +175,7 @@ static void bond_info_show_master(struct seq_file *seq)
static void bond_info_show_slave(struct seq_file *seq,
const struct slave *slave)
{
struct bonding *bond = PDE_DATA(file_inode(seq->file));
struct bonding *bond = pde_data(file_inode(seq->file));
seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));

22
drivers/net/wireless/cisco/airo.c
View File

@ -4672,7 +4672,7 @@ static ssize_t proc_write(struct file *file,
static int proc_status_open(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *apriv = dev->ml_priv;
CapabilityRid cap_rid;
StatusRid status_rid;
@ -4756,7 +4756,7 @@ static int proc_stats_rid_open(struct inode *inode,
u16 rid)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *apriv = dev->ml_priv;
StatsRid stats;
int i, j;
@ -4819,7 +4819,7 @@ static inline int sniffing_mode(struct airo_info *ai)
static void proc_config_on_close(struct inode *inode, struct file *file)
{
struct proc_data *data = file->private_data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
char *line;
@ -5030,7 +5030,7 @@ static const char *get_rmode(__le16 mode)
static int proc_config_open(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
int i;
__le16 mode;
@ -5120,7 +5120,7 @@ static int proc_config_open(struct inode *inode, struct file *file)
static void proc_SSID_on_close(struct inode *inode, struct file *file)
{
struct proc_data *data = file->private_data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
SsidRid SSID_rid;
int i;
@ -5156,7 +5156,7 @@ static void proc_SSID_on_close(struct inode *inode, struct file *file)
static void proc_APList_on_close(struct inode *inode, struct file *file)
{
struct proc_data *data = file->private_data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
APListRid *APList_rid = &ai->APList;
int i;
@ -5280,7 +5280,7 @@ static int set_wep_tx_idx(struct airo_info *ai, u16 index, int perm, int lock)
static void proc_wepkey_on_close(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
int i, rc;
char key[16];
@ -5331,7 +5331,7 @@ static void proc_wepkey_on_close(struct inode *inode, struct file *file)
static int proc_wepkey_open(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
char *ptr;
WepKeyRid wkr;
@ -5379,7 +5379,7 @@ static int proc_wepkey_open(struct inode *inode, struct file *file)
static int proc_SSID_open(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
int i;
char *ptr;
@ -5423,7 +5423,7 @@ static int proc_SSID_open(struct inode *inode, struct file *file)
static int proc_APList_open(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
int i;
char *ptr;
@ -5462,7 +5462,7 @@ static int proc_APList_open(struct inode *inode, struct file *file)
static int proc_BSSList_open(struct inode *inode, struct file *file)
{
struct proc_data *data;
struct net_device *dev = PDE_DATA(inode);
struct net_device *dev = pde_data(inode);
struct airo_info *ai = dev->ml_priv;
char *ptr;
BSSListRid BSSList_rid;

16
drivers/net/wireless/intersil/hostap/hostap_ap.c
View File

@ -69,7 +69,7 @@ static void prism2_send_mgmt(struct net_device *dev,
#if !defined(PRISM2_NO_PROCFS_DEBUG) && defined(CONFIG_PROC_FS)
static int ap_debug_proc_show(struct seq_file *m, void *v)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
seq_printf(m, "BridgedUnicastFrames=%u\n", ap->bridged_unicast);
seq_printf(m, "BridgedMulticastFrames=%u\n", ap->bridged_multicast);
@ -320,7 +320,7 @@ void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
static int ap_control_proc_show(struct seq_file *m, void *v)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
char *policy_txt;
struct mac_entry *entry;
@ -352,20 +352,20 @@ static int ap_control_proc_show(struct seq_file *m, void *v)
static void *ap_control_proc_start(struct seq_file *m, loff_t *_pos)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
spin_lock_bh(&ap->mac_restrictions.lock);
return seq_list_start_head(&ap->mac_restrictions.mac_list, *_pos);
}
static void *ap_control_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
return seq_list_next(v, &ap->mac_restrictions.mac_list, _pos);
}
static void ap_control_proc_stop(struct seq_file *m, void *v)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
spin_unlock_bh(&ap->mac_restrictions.lock);
}
@ -554,20 +554,20 @@ static int prism2_ap_proc_show(struct seq_file *m, void *v)
static void *prism2_ap_proc_start(struct seq_file *m, loff_t *_pos)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
spin_lock_bh(&ap->sta_table_lock);
return seq_list_start_head(&ap->sta_list, *_pos);
}
static void *prism2_ap_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
return seq_list_next(v, &ap->sta_list, _pos);
}
static void prism2_ap_proc_stop(struct seq_file *m, void *v)
{
struct ap_data *ap = PDE_DATA(file_inode(m->file));
struct ap_data *ap = pde_data(file_inode(m->file));
spin_unlock_bh(&ap->sta_table_lock);
}

2
drivers/net/wireless/intersil/hostap/hostap_download.c
View File

@ -227,7 +227,7 @@ static int prism2_download_aux_dump_proc_open(struct inode *inode, struct file *
sizeof(struct prism2_download_aux_dump));
if (ret == 0) {
struct seq_file *m = file->private_data;
m->private = PDE_DATA(inode);
m->private = pde_data(inode);
}
return ret;
}

24
drivers/net/wireless/intersil/hostap/hostap_proc.c
View File

@ -97,20 +97,20 @@ static int prism2_wds_proc_show(struct seq_file *m, void *v)
static void *prism2_wds_proc_start(struct seq_file *m, loff_t *_pos)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
read_lock_bh(&local->iface_lock);
return seq_list_start(&local->hostap_interfaces, *_pos);
}
static void *prism2_wds_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
return seq_list_next(v, &local->hostap_interfaces, _pos);
}
static void prism2_wds_proc_stop(struct seq_file *m, void *v)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
read_unlock_bh(&local->iface_lock);
}
@ -123,7 +123,7 @@ static const struct seq_operations prism2_wds_proc_seqops = {
static int prism2_bss_list_proc_show(struct seq_file *m, void *v)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
struct list_head *ptr = v;
struct hostap_bss_info *bss;
@ -151,21 +151,21 @@ static int prism2_bss_list_proc_show(struct seq_file *m, void *v)
static void *prism2_bss_list_proc_start(struct seq_file *m, loff_t *_pos)
__acquires(&local->lock)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
spin_lock_bh(&local->lock);
return seq_list_start_head(&local->bss_list, *_pos);
}
static void *prism2_bss_list_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
return seq_list_next(v, &local->bss_list, _pos);
}
static void prism2_bss_list_proc_stop(struct seq_file *m, void *v)
__releases(&local->lock)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
spin_unlock_bh(&local->lock);
}
@ -198,7 +198,7 @@ static int prism2_crypt_proc_show(struct seq_file *m, void *v)
static ssize_t prism2_pda_proc_read(struct file *file, char __user *buf,
size_t count, loff_t *_pos)
{
local_info_t *local = PDE_DATA(file_inode(file));
local_info_t *local = pde_data(file_inode(file));
size_t off;
if (local->pda == NULL || *_pos >= PRISM2_PDA_SIZE)
@ -272,7 +272,7 @@ static int prism2_io_debug_proc_read(char *page, char **start, off_t off,
#ifndef PRISM2_NO_STATION_MODES
static int prism2_scan_results_proc_show(struct seq_file *m, void *v)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
unsigned long entry;
int i, len;
struct hfa384x_hostscan_result *scanres;
@ -322,7 +322,7 @@ static int prism2_scan_results_proc_show(struct seq_file *m, void *v)
static void *prism2_scan_results_proc_start(struct seq_file *m, loff_t *_pos)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
spin_lock_bh(&local->lock);
/* We have a header (pos 0) + N results to show (pos 1...N) */
@ -333,7 +333,7 @@ static void *prism2_scan_results_proc_start(struct seq_file *m, loff_t *_pos)
static void *prism2_scan_results_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
++*_pos;
if (*_pos > local->last_scan_results_count)
@ -343,7 +343,7 @@ static void *prism2_scan_results_proc_next(struct seq_file *m, void *v, loff_t *
static void prism2_scan_results_proc_stop(struct seq_file *m, void *v)
{
local_info_t *local = PDE_DATA(file_inode(m->file));
local_info_t *local = pde_data(file_inode(m->file));
spin_unlock_bh(&local->lock);
}

2
drivers/net/wireless/ray_cs.c
View File

@ -2746,7 +2746,7 @@ static ssize_t int_proc_write(struct file *file, const char __user *buffer,
nr = nr * 10 + c;
p++;
} while (--len);
*(int *)PDE_DATA(file_inode(file)) = nr;
*(int *)pde_data(file_inode(file)) = nr;
return count;
}

36
drivers/nubus/proc.c
View File

@ -93,30 +93,30 @@ struct nubus_proc_pde_data {
static struct nubus_proc_pde_data *
nubus_proc_alloc_pde_data(unsigned char *ptr, unsigned int size)
{
struct nubus_proc_pde_data *pde_data;
struct nubus_proc_pde_data *pded;
pde_data = kmalloc(sizeof(*pde_data), GFP_KERNEL);
if (!pde_data)
pded = kmalloc(sizeof(*pded), GFP_KERNEL);
if (!pded)
return NULL;
pde_data->res_ptr = ptr;
pde_data->res_size = size;
return pde_data;
pded->res_ptr = ptr;
pded->res_size = size;
return pded;
}
static int nubus_proc_rsrc_show(struct seq_file *m, void *v)
{
struct inode *inode = m->private;
struct nubus_proc_pde_data *pde_data;
struct nubus_proc_pde_data *pded;
pde_data = PDE_DATA(inode);
if (!pde_data)
pded = pde_data(inode);
if (!pded)
return 0;
if (pde_data->res_size > m->size)
if (pded->res_size > m->size)
return -EFBIG;
if (pde_data->res_size) {
if (pded->res_size) {
int lanes = (int)proc_get_parent_data(inode);
struct nubus_dirent ent;
@ -124,11 +124,11 @@ static int nubus_proc_rsrc_show(struct seq_file *m, void *v)
return 0;
ent.mask = lanes;
ent.base = pde_data->res_ptr;
ent.base = pded->res_ptr;
ent.data = 0;
nubus_seq_write_rsrc_mem(m, &ent, pde_data->res_size);
nubus_seq_write_rsrc_mem(m, &ent, pded->res_size);
} else {
unsigned int data = (unsigned int)pde_data->res_ptr;
unsigned int data = (unsigned int)pded->res_ptr;
seq_putc(m, data >> 16);
seq_putc(m, data >> 8);
@ -142,18 +142,18 @@ void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
unsigned int size)
{
char name[9];
struct nubus_proc_pde_data *pde_data;
struct nubus_proc_pde_data *pded;
if (!procdir)
return;
snprintf(name, sizeof(name), "%x", ent->type);
if (size)
pde_data = nubus_proc_alloc_pde_data(nubus_dirptr(ent), size);
pded = nubus_proc_alloc_pde_data(nubus_dirptr(ent), size);
else
pde_data = NULL;
pded = NULL;
proc_create_single_data(name, S_IFREG | 0444, procdir,
nubus_proc_rsrc_show, pde_data);
nubus_proc_rsrc_show, pded);
}
void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,

4
drivers/parisc/led.c
View File

@ -168,14 +168,14 @@ static int led_proc_show(struct seq_file *m, void *v)
static int led_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, led_proc_show, PDE_DATA(inode));
return single_open(file, led_proc_show, pde_data(inode));
}
static ssize_t led_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
void *data = PDE_DATA(file_inode(file));
void *data = pde_data(file_inode(file));
char *cur, lbuf[32];
int d;

10
drivers/pci/proc.c
View File

@ -21,14 +21,14 @@ static int proc_initialized; /* = 0 */
static loff_t proc_bus_pci_lseek(struct file *file, loff_t off, int whence)
{
struct pci_dev *dev = PDE_DATA(file_inode(file));
struct pci_dev *dev = pde_data(file_inode(file));
return fixed_size_llseek(file, off, whence, dev->cfg_size);
}
static ssize_t proc_bus_pci_read(struct file *file, char __user *buf,
size_t nbytes, loff_t *ppos)
{
struct pci_dev *dev = PDE_DATA(file_inode(file));
struct pci_dev *dev = pde_data(file_inode(file));
unsigned int pos = *ppos;
unsigned int cnt, size;
@ -114,7 +114,7 @@ static ssize_t proc_bus_pci_write(struct file *file, const char __user *buf,
size_t nbytes, loff_t *ppos)
{
struct inode *ino = file_inode(file);
struct pci_dev *dev = PDE_DATA(ino);
struct pci_dev *dev = pde_data(ino);
int pos = *ppos;
int size = dev->cfg_size;
int cnt, ret;
@ -196,7 +196,7 @@ struct pci_filp_private {
static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct pci_dev *dev = PDE_DATA(file_inode(file));
struct pci_dev *dev = pde_data(file_inode(file));
#ifdef HAVE_PCI_MMAP
struct pci_filp_private *fpriv = file->private_data;
#endif /* HAVE_PCI_MMAP */
@ -244,7 +244,7 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
#ifdef HAVE_PCI_MMAP
static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma)
{
struct pci_dev *dev = PDE_DATA(file_inode(file));
struct pci_dev *dev = pde_data(file_inode(file));
struct pci_filp_private *fpriv = file->private_data;
int i, ret, write_combine = 0, res_bit = IORESOURCE_MEM;

4
drivers/platform/x86/thinkpad_acpi.c
View File

@ -880,14 +880,14 @@ static int dispatch_proc_show(struct seq_file *m, void *v)
static int dispatch_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, dispatch_proc_show, PDE_DATA(inode));
return single_open(file, dispatch_proc_show, pde_data(inode));
}
static ssize_t dispatch_proc_write(struct file *file,
const char __user *userbuf,
size_t count, loff_t *pos)
{
struct ibm_struct *ibm = PDE_DATA(file_inode(file));
struct ibm_struct *ibm = pde_data(file_inode(file));
char *kernbuf;
int ret;

16
drivers/platform/x86/toshiba_acpi.c
View File

@ -1368,7 +1368,7 @@ static int lcd_proc_show(struct seq_file *m, void *v)
static int lcd_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, lcd_proc_show, PDE_DATA(inode));
return single_open(file, lcd_proc_show, pde_data(inode));
}
static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
@ -1404,7 +1404,7 @@ static int set_lcd_status(struct backlight_device *bd)
static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
char cmd[42];
size_t len;
int levels;
@ -1469,13 +1469,13 @@ static int video_proc_show(struct seq_file *m, void *v)
static int video_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, video_proc_show, PDE_DATA(inode));
return single_open(file, video_proc_show, pde_data(inode));
}
static ssize_t video_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
char *buffer;
char *cmd;
int lcd_out = -1, crt_out = -1, tv_out = -1;
@ -1580,13 +1580,13 @@ static int fan_proc_show(struct seq_file *m, void *v)
static int fan_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, fan_proc_show, PDE_DATA(inode));
return single_open(file, fan_proc_show, pde_data(inode));
}
static ssize_t fan_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
char cmd[42];
size_t len;
int value;
@ -1628,13 +1628,13 @@ static int keys_proc_show(struct seq_file *m, void *v)
static int keys_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, keys_proc_show, PDE_DATA(inode));
return single_open(file, keys_proc_show, pde_data(inode));
}
static ssize_t keys_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
struct toshiba_acpi_dev *dev = pde_data(file_inode(file));
char cmd[42];
size_t len;
int value;

2
drivers/pnp/isapnp/proc.c
View File

@ -22,7 +22,7 @@ static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
static ssize_t isapnp_proc_bus_read(struct file *file, char __user * buf,
size_t nbytes, loff_t * ppos)
{
struct pnp_dev *dev = PDE_DATA(file_inode(file));
struct pnp_dev *dev = pde_data(file_inode(file));
int pos = *ppos;
int cnt, size = 256;

4
drivers/pnp/pnpbios/proc.c
View File

@ -173,13 +173,13 @@ static int pnpbios_proc_show(struct seq_file *m, void *v)
static int pnpbios_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, pnpbios_proc_show, PDE_DATA(inode));
return single_open(file, pnpbios_proc_show, pde_data(inode));
}
static ssize_t pnpbios_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
void *data = PDE_DATA(file_inode(file));
void *data = pde_data(file_inode(file));
struct pnp_bios_node *node;
int boot = (long)data >> 8;
u8 nodenum = (long)data;

4
drivers/scsi/scsi_proc.c
View File

@ -49,7 +49,7 @@ static DEFINE_MUTEX(global_host_template_mutex);
static ssize_t proc_scsi_host_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
struct Scsi_Host *shost = PDE_DATA(file_inode(file));
struct Scsi_Host *shost = pde_data(file_inode(file));
ssize_t ret = -ENOMEM;
char *page;
@ -79,7 +79,7 @@ static int proc_scsi_show(struct seq_file *m, void *v)
static int proc_scsi_host_open(struct inode *inode, struct file *file)
{
return single_open_size(file, proc_scsi_show, PDE_DATA(inode),
return single_open_size(file, proc_scsi_show, pde_data(inode),
4 * PAGE_SIZE);
}

35
drivers/scsi/sg.c
View File

@ -77,7 +77,7 @@ static int sg_proc_init(void);
#define SG_DEFAULT_TIMEOUT mult_frac(SG_DEFAULT_TIMEOUT_USER, HZ, USER_HZ)
int sg_big_buff = SG_DEF_RESERVED_SIZE;
static int sg_big_buff = SG_DEF_RESERVED_SIZE;
/* N.B. This variable is readable and writeable via
/proc/scsi/sg/def_reserved_size . Each time sg_open() is called a buffer
of this size (or less if there is not enough memory) will be reserved
@ -1634,6 +1634,37 @@ MODULE_PARM_DESC(scatter_elem_sz, "scatter gather element "
MODULE_PARM_DESC(def_reserved_size, "size of buffer reserved for each fd");
MODULE_PARM_DESC(allow_dio, "allow direct I/O (default: 0 (disallow))");
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
static struct ctl_table sg_sysctls[] = {
{
.procname = "sg-big-buff",
.data = &sg_big_buff,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = proc_dointvec,
},
{}
};
static struct ctl_table_header *hdr;
static void register_sg_sysctls(void)
{
if (!hdr)
hdr = register_sysctl("kernel", sg_sysctls);
}
static void unregister_sg_sysctls(void)
{
if (hdr)
unregister_sysctl_table(hdr);
}
#else
#define register_sg_sysctls() do { } while (0)
#define unregister_sg_sysctls() do { } while (0)
#endif /* CONFIG_SYSCTL */
static int __init
init_sg(void)
{
@ -1666,6 +1697,7 @@ init_sg(void)
return 0;
}
class_destroy(sg_sysfs_class);
register_sg_sysctls();
err_out:
unregister_chrdev_region(MKDEV(SCSI_GENERIC_MAJOR, 0), SG_MAX_DEVS);
return rc;
@ -1674,6 +1706,7 @@ init_sg(void)
static void __exit
exit_sg(void)
{
unregister_sg_sysctls();
#ifdef CONFIG_SCSI_PROC_FS
remove_proc_subtree("scsi/sg", NULL);
#endif /* CONFIG_SCSI_PROC_FS */

4
drivers/usb/gadget/function/rndis.c
View File

@ -1117,7 +1117,7 @@ static int rndis_proc_show(struct seq_file *m, void *v)
static ssize_t rndis_proc_write(struct file *file, const char __user *buffer,
size_t count, loff_t *ppos)
{
rndis_params *p = PDE_DATA(file_inode(file));
rndis_params *p = pde_data(file_inode(file));
u32 speed = 0;
int i, fl_speed = 0;
@ -1161,7 +1161,7 @@ static ssize_t rndis_proc_write(struct file *file, const char __user *buffer,
static int rndis_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, rndis_proc_show, PDE_DATA(inode));
return single_open(file, rndis_proc_show, pde_data(inode));
}
static const struct proc_ops rndis_proc_ops = {

2
drivers/zorro/proc.c
View File

@ -30,7 +30,7 @@ proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
static ssize_t
proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
{
struct zorro_dev *z = PDE_DATA(file_inode(file));
struct zorro_dev *z = pde_data(file_inode(file));
struct ConfigDev cd;
loff_t pos = *ppos;

2
fs/Makefile
View File

@ -6,6 +6,8 @@
# Rewritten to use lists instead of if-statements.
#
obj-$(CONFIG_SYSCTL) += sysctls.o
obj-y := open.o read_write.o file_table.o super.o \
char_dev.o stat.o exec.o pipe.o namei.o fcntl.o \
ioctl.o readdir.o select.o dcache.o inode.o \

6
fs/afs/proc.c
View File

@ -227,7 +227,7 @@ static int afs_proc_cell_volumes_show(struct seq_file *m, void *v)
static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos)
__acquires(cell->proc_lock)
{
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
struct afs_cell *cell = pde_data(file_inode(m->file));
rcu_read_lock();
return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos);
@ -236,7 +236,7 @@ static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos)
static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v,
loff_t *_pos)
{
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
struct afs_cell *cell = pde_data(file_inode(m->file));
return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos);
}
@ -322,7 +322,7 @@ static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos)
{
struct afs_vl_seq_net_private *priv = m->private;
struct afs_vlserver_list *vllist;
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
struct afs_cell *cell = pde_data(file_inode(m->file));
loff_t pos = *_pos;
rcu_read_lock();

31
fs/aio.c
View File

@ -220,9 +220,35 @@ struct aio_kiocb {
/*------ sysctl variables----*/
static DEFINE_SPINLOCK(aio_nr_lock);
unsigned long aio_nr; /* current system wide number of aio requests */
unsigned long aio_max_nr = 0x10000; /* system wide maximum number of aio requests */
static unsigned long aio_nr; /* current system wide number of aio requests */
static unsigned long aio_max_nr = 0x10000; /* system wide maximum number of aio requests */
/*----end sysctl variables---*/
#ifdef CONFIG_SYSCTL
static struct ctl_table aio_sysctls[] = {
{
.procname = "aio-nr",
.data = &aio_nr,
.maxlen = sizeof(aio_nr),
.mode = 0444,
.proc_handler = proc_doulongvec_minmax,
},
{
.procname = "aio-max-nr",
.data = &aio_max_nr,
.maxlen = sizeof(aio_max_nr),
.mode = 0644,
.proc_handler = proc_doulongvec_minmax,
},
{}
};
static void __init aio_sysctl_init(void)
{
register_sysctl_init("fs", aio_sysctls);
}
#else
#define aio_sysctl_init() do { } while (0)
#endif
static struct kmem_cache *kiocb_cachep;
static struct kmem_cache *kioctx_cachep;
@ -275,6 +301,7 @@ static int __init aio_setup(void)
kiocb_cachep = KMEM_CACHE(aio_kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
aio_sysctl_init();
return 0;
}
__initcall(aio_setup);

6
fs/binfmt_misc.c
View File

@ -822,7 +822,11 @@ static int __init init_misc_binfmt(void)
int err = register_filesystem(&bm_fs_type);
if (!err)
insert_binfmt(&misc_format);
return err;
if (!register_sysctl_mount_point("fs/binfmt_misc")) {
pr_warn("Failed to create fs/binfmt_misc sysctl mount point");
return -ENOMEM;
}
return 0;
}
static void __exit exit_misc_binfmt(void)

10
fs/btrfs/extent_io.c
View File

@ -12,7 +12,6 @@
#include <linux/writeback.h>
#include <linux/pagevec.h>
#include <linux/prefetch.h>
#include <linux/cleancache.h>
#include <linux/fsverity.h>
#include "misc.h"
#include "extent_io.h"
@ -3578,15 +3577,6 @@ int btrfs_do_readpage(struct page *page, struct extent_map **em_cached,
goto out;
}
if (!PageUptodate(page)) {
if (cleancache_get_page(page) == 0) {
BUG_ON(blocksize != PAGE_SIZE);
unlock_extent(tree, start, end);
unlock_page(page);
goto out;
}
}
if (page->index == last_byte >> PAGE_SHIFT) {
size_t zero_offset = offset_in_page(last_byte);

2
fs/btrfs/super.c
View File

@ -23,7 +23,6 @@
#include <linux/miscdevice.h>
#include <linux/magic.h>
#include <linux/slab.h>
#include <linux/cleancache.h>
#include <linux/ratelimit.h>
#include <linux/crc32c.h>
#include <linux/btrfs.h>
@ -1374,7 +1373,6 @@ static int btrfs_fill_super(struct super_block *sb,
goto fail_close;
}
cleancache_init_fs(sb);
sb->s_flags |= SB_ACTIVE;
return 0;

66
fs/coredump.c
View File

@ -41,6 +41,7 @@
#include <linux/fs.h>
#include <linux/path.h>
#include <linux/timekeeping.h>
#include <linux/sysctl.h>
#include <linux/uaccess.h>
#include <asm/mmu_context.h>
@ -52,9 +53,9 @@
#include <trace/events/sched.h>
int core_uses_pid;
unsigned int core_pipe_limit;
char core_pattern[CORENAME_MAX_SIZE] = "core";
static int core_uses_pid;
static unsigned int core_pipe_limit;
static char core_pattern[CORENAME_MAX_SIZE] = "core";
static int core_name_size = CORENAME_MAX_SIZE;
struct core_name {
@ -62,8 +63,6 @@ struct core_name {
int used, size;
};
/* The maximal length of core_pattern is also specified in sysctl.c */
static int expand_corename(struct core_name *cn, int size)
{
char *corename = krealloc(cn->corename, size, GFP_KERNEL);
@ -893,6 +892,63 @@ int dump_align(struct coredump_params *cprm, int align)
}
EXPORT_SYMBOL(dump_align);
#ifdef CONFIG_SYSCTL
void validate_coredump_safety(void)
{
if (suid_dumpable == SUID_DUMP_ROOT &&
core_pattern[0] != '/' && core_pattern[0] != '|') {
pr_warn(
"Unsafe core_pattern used with fs.suid_dumpable=2.\n"
"Pipe handler or fully qualified core dump path required.\n"
"Set kernel.core_pattern before fs.suid_dumpable.\n"
);
}
}
static int proc_dostring_coredump(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int error = proc_dostring(table, write, buffer, lenp, ppos);
if (!error)
validate_coredump_safety();
return error;
}
static struct ctl_table coredump_sysctls[] = {
{
.procname = "core_uses_pid",
.data = &core_uses_pid,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "core_pattern",
.data = core_pattern,
.maxlen = CORENAME_MAX_SIZE,
.mode = 0644,
.proc_handler = proc_dostring_coredump,
},
{
.procname = "core_pipe_limit",
.data = &core_pipe_limit,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{ }
};
static int __init init_fs_coredump_sysctls(void)
{
register_sysctl_init("kernel", coredump_sysctls);
return 0;
}
fs_initcall(init_fs_coredump_sysctls);
#endif /* CONFIG_SYSCTL */
/*
* The purpose of always_dump_vma() is to make sure that special kernel mappings
* that are useful for post-mortem analysis are included in every core dump.

37
fs/dcache.c
View File

@ -115,10 +115,13 @@ static inline struct hlist_bl_head *in_lookup_hash(const struct dentry *parent,
return in_lookup_hashtable + hash_32(hash, IN_LOOKUP_SHIFT);
}
/* Statistics gathering. */
struct dentry_stat_t dentry_stat = {
.age_limit = 45,
struct dentry_stat_t {
long nr_dentry;
long nr_unused;
long age_limit; /* age in seconds */
long want_pages; /* pages requested by system */
long nr_negative; /* # of unused negative dentries */
long dummy; /* Reserved for future use */
};
static DEFINE_PER_CPU(long, nr_dentry);
@ -126,6 +129,10 @@ static DEFINE_PER_CPU(long, nr_dentry_unused);
static DEFINE_PER_CPU(long, nr_dentry_negative);
#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
/* Statistics gathering. */
static struct dentry_stat_t dentry_stat = {
.age_limit = 45,
};
/*
* Here we resort to our own counters instead of using generic per-cpu counters
@ -167,14 +174,32 @@ static long get_nr_dentry_negative(void)
return sum < 0 ? 0 : sum;
}
int proc_nr_dentry(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
static int proc_nr_dentry(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
dentry_stat.nr_dentry = get_nr_dentry();
dentry_stat.nr_unused = get_nr_dentry_unused();
dentry_stat.nr_negative = get_nr_dentry_negative();
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}
static struct ctl_table fs_dcache_sysctls[] = {
{
.procname = "dentry-state",
.data = &dentry_stat,
.maxlen = 6*sizeof(long),
.mode = 0444,
.proc_handler = proc_nr_dentry,
},
{ }
};
static int __init init_fs_dcache_sysctls(void)
{
register_sysctl_init("fs", fs_dcache_sysctls);
return 0;
}
fs_initcall(init_fs_dcache_sysctls);
#endif
/*

10
fs/eventpoll.c
View File

@ -307,7 +307,7 @@ static void unlist_file(struct epitems_head *head)
static long long_zero;
static long long_max = LONG_MAX;
struct ctl_table epoll_table[] = {
static struct ctl_table epoll_table[] = {
{
.procname = "max_user_watches",
.data = &max_user_watches,
@ -319,6 +319,13 @@ struct ctl_table epoll_table[] = {
},
{ }
};
static void __init epoll_sysctls_init(void)
{
register_sysctl("fs/epoll", epoll_table);
}
#else
#define epoll_sysctls_init() do { } while (0)
#endif /* CONFIG_SYSCTL */
static const struct file_operations eventpoll_fops;
@ -2378,6 +2385,7 @@ static int __init eventpoll_init(void)
/* Allocates slab cache used to allocate "struct eppoll_entry" */
pwq_cache = kmem_cache_create("eventpoll_pwq",
sizeof(struct eppoll_entry), 0, SLAB_PANIC|SLAB_ACCOUNT, NULL);
epoll_sysctls_init();
ephead_cache = kmem_cache_create("ep_head",
sizeof(struct epitems_head), 0, SLAB_PANIC|SLAB_ACCOUNT, NULL);

35
fs/exec.c
View File

@ -65,6 +65,7 @@
#include <linux/vmalloc.h>
#include <linux/io_uring.h>
#include <linux/syscall_user_dispatch.h>
#include <linux/coredump.h>
#include <linux/uaccess.h>
#include <asm/mmu_context.h>
@ -2099,3 +2100,37 @@ COMPAT_SYSCALL_DEFINE5(execveat, int, fd,
argv, envp, flags);
}
#endif
#ifdef CONFIG_SYSCTL
static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
if (!error)
validate_coredump_safety();
return error;
}
static struct ctl_table fs_exec_sysctls[] = {
{
.procname = "suid_dumpable",
.data = &suid_dumpable,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax_coredump,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_TWO,
},
{ }
};
static int __init init_fs_exec_sysctls(void)
{
register_sysctl_init("fs", fs_exec_sysctls);
return 0;
}
fs_initcall(init_fs_exec_sysctls);
#endif /* CONFIG_SYSCTL */

14
fs/ext4/mballoc.c
View File

@ -2834,7 +2834,7 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
static void *ext4_mb_seq_groups_start(struct seq_file *seq, loff_t *pos)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
struct super_block *sb = pde_data(file_inode(seq->file));
ext4_group_t group;
if (*pos < 0 || *pos >= ext4_get_groups_count(sb))
@ -2845,7 +2845,7 @@ static void *ext4_mb_seq_groups_start(struct seq_file *seq, loff_t *pos)
static void *ext4_mb_seq_groups_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
struct super_block *sb = pde_data(file_inode(seq->file));
ext4_group_t group;
++*pos;
@ -2857,7 +2857,7 @@ static void *ext4_mb_seq_groups_next(struct seq_file *seq, void *v, loff_t *pos)
static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
struct super_block *sb = pde_data(file_inode(seq->file));
ext4_group_t group = (ext4_group_t) ((unsigned long) v);
int i;
int err, buddy_loaded = 0;
@ -2985,7 +2985,7 @@ int ext4_seq_mb_stats_show(struct seq_file *seq, void *offset)
static void *ext4_mb_seq_structs_summary_start(struct seq_file *seq, loff_t *pos)
__acquires(&EXT4_SB(sb)->s_mb_rb_lock)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
struct super_block *sb = pde_data(file_inode(seq->file));
unsigned long position;
read_lock(&EXT4_SB(sb)->s_mb_rb_lock);
@ -2998,7 +2998,7 @@ __acquires(&EXT4_SB(sb)->s_mb_rb_lock)
static void *ext4_mb_seq_structs_summary_next(struct seq_file *seq, void *v, loff_t *pos)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
struct super_block *sb = pde_data(file_inode(seq->file));
unsigned long position;
++*pos;
@ -3010,7 +3010,7 @@ static void *ext4_mb_seq_structs_summary_next(struct seq_file *seq, void *v, lof
static int ext4_mb_seq_structs_summary_show(struct seq_file *seq, void *v)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
struct super_block *sb = pde_data(file_inode(seq->file));
struct ext4_sb_info *sbi = EXT4_SB(sb);
unsigned long position = ((unsigned long) v);
struct ext4_group_info *grp;
@ -3058,7 +3058,7 @@ static int ext4_mb_seq_structs_summary_show(struct seq_file *seq, void *v)
static void ext4_mb_seq_structs_summary_stop(struct seq_file *seq, void *v)
__releases(&EXT4_SB(sb)->s_mb_rb_lock)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
struct super_block *sb = pde_data(file_inode(seq->file));
read_unlock(&EXT4_SB(sb)->s_mb_rb_lock);
}

6
fs/ext4/readpage.c
View File

@ -43,7 +43,6 @@
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include <linux/pagevec.h>
#include <linux/cleancache.h>
#include "ext4.h"
@ -350,11 +349,6 @@ int ext4_mpage_readpages(struct inode *inode,
} else if (fully_mapped) {
SetPageMappedToDisk(page);
}
if (fully_mapped && blocks_per_page == 1 &&
!PageUptodate(page) && cleancache_get_page(page) == 0) {
SetPageUptodate(page);
goto confused;
}
/*
* This page will go to BIO. Do we need to send this

3
fs/ext4/super.c
View File

@ -39,7 +39,6 @@
#include <linux/log2.h>
#include <linux/crc16.h>
#include <linux/dax.h>
#include <linux/cleancache.h>
#include <linux/uaccess.h>
#include <linux/iversion.h>
#include <linux/unicode.h>
@ -3149,8 +3148,6 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
EXT4_BLOCKS_PER_GROUP(sb),
EXT4_INODES_PER_GROUP(sb),
sbi->s_mount_opt, sbi->s_mount_opt2);
cleancache_init_fs(sb);
return err;
}

13
fs/f2fs/data.c
View File

@ -18,7 +18,6 @@
#include <linux/swap.h>
#include <linux/prefetch.h>
#include <linux/uio.h>
#include <linux/cleancache.h>
#include <linux/sched/signal.h>
#include <linux/fiemap.h>
#include <linux/iomap.h>
@ -2035,12 +2034,6 @@ static int f2fs_read_single_page(struct inode *inode, struct page *page,
block_nr = map->m_pblk + block_in_file - map->m_lblk;
SetPageMappedToDisk(page);
if (!PageUptodate(page) && (!PageSwapCache(page) &&
!cleancache_get_page(page))) {
SetPageUptodate(page);
goto confused;
}
if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr,
DATA_GENERIC_ENHANCE_READ)) {
ret = -EFSCORRUPTED;
@ -2096,12 +2089,6 @@ static int f2fs_read_single_page(struct inode *inode, struct page *page,
ClearPageError(page);
*last_block_in_bio = block_nr;
goto out;
confused:
if (bio) {
__submit_bio(F2FS_I_SB(inode), bio, DATA);
bio = NULL;
}
unlock_page(page);
out:
*bio_ret = bio;
return ret;

47
fs/file_table.c
View File

@ -33,7 +33,7 @@
#include "internal.h"
/* sysctl tunables... */
struct files_stat_struct files_stat = {
static struct files_stat_struct files_stat = {
.max_files = NR_FILE
};
@ -75,22 +75,53 @@ unsigned long get_max_files(void)
}
EXPORT_SYMBOL_GPL(get_max_files);
#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
/*
* Handle nr_files sysctl
*/
#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
int proc_nr_files(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
static int proc_nr_files(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
files_stat.nr_files = get_nr_files();
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}
#else
int proc_nr_files(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
static struct ctl_table fs_stat_sysctls[] = {
{
.procname = "file-nr",
.data = &files_stat,
.maxlen = sizeof(files_stat),
.mode = 0444,
.proc_handler = proc_nr_files,
},
{
.procname = "file-max",
.data = &files_stat.max_files,
.maxlen = sizeof(files_stat.max_files),
.mode = 0644,
.proc_handler = proc_doulongvec_minmax,
.extra1 = SYSCTL_LONG_ZERO,
.extra2 = SYSCTL_LONG_MAX,
},
{
.procname = "nr_open",
.data = &sysctl_nr_open,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &sysctl_nr_open_min,
.extra2 = &sysctl_nr_open_max,
},
{ }
};
static int __init init_fs_stat_sysctls(void)
{
return -ENOSYS;
register_sysctl_init("fs", fs_stat_sysctls);
return 0;
}
fs_initcall(init_fs_stat_sysctls);
#endif
static struct file *__alloc_file(int flags, const struct cred *cred)

39
fs/inode.c
View File

@ -67,11 +67,6 @@ const struct address_space_operations empty_aops = {
};
EXPORT_SYMBOL(empty_aops);
/*
* Statistics gathering..
*/
struct inodes_stat_t inodes_stat;
static DEFINE_PER_CPU(unsigned long, nr_inodes);
static DEFINE_PER_CPU(unsigned long, nr_unused);
@ -106,13 +101,43 @@ long get_nr_dirty_inodes(void)
* Handle nr_inode sysctl
*/
#ifdef CONFIG_SYSCTL
int proc_nr_inodes(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
/*
* Statistics gathering..
*/
static struct inodes_stat_t inodes_stat;
static int proc_nr_inodes(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
inodes_stat.nr_inodes = get_nr_inodes();
inodes_stat.nr_unused = get_nr_inodes_unused();
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
}
static struct ctl_table inodes_sysctls[] = {
{
.procname = "inode-nr",
.data = &inodes_stat,
.maxlen = 2*sizeof(long),
.mode = 0444,
.proc_handler = proc_nr_inodes,
},
{
.procname = "inode-state",
.data = &inodes_stat,
.maxlen = 7*sizeof(long),
.mode = 0444,
.proc_handler = proc_nr_inodes,
},
{ }
};
static int __init init_fs_inode_sysctls(void)
{
register_sysctl_init("fs", inodes_sysctls);
return 0;
}
early_initcall(init_fs_inode_sysctls);
#endif
static int no_open(struct inode *inode, struct file *file)

2
fs/jbd2/journal.c
View File

@ -1212,7 +1212,7 @@ static const struct seq_operations jbd2_seq_info_ops = {
static int jbd2_seq_info_open(struct inode *inode, struct file *file)
{
journal_t *journal = PDE_DATA(inode);
journal_t *journal = pde_data(inode);
struct jbd2_stats_proc_session *s;
int rc, size;

34
fs/locks.c
View File

@ -62,6 +62,7 @@
#include <linux/pid_namespace.h>
#include <linux/hashtable.h>
#include <linux/percpu.h>
#include <linux/sysctl.h>
#define CREATE_TRACE_POINTS
#include <trace/events/filelock.h>
@ -88,8 +89,37 @@ static int target_leasetype(struct file_lock *fl)
return fl->fl_type;
}
int leases_enable = 1;
int lease_break_time = 45;
static int leases_enable = 1;
static int lease_break_time = 45;
#ifdef CONFIG_SYSCTL
static struct ctl_table locks_sysctls[] = {
{
.procname = "leases-enable",
.data = &leases_enable,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
#ifdef CONFIG_MMU
{
.procname = "lease-break-time",
.data = &lease_break_time,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
#endif /* CONFIG_MMU */
{}
};
static int __init init_fs_locks_sysctls(void)
{
register_sysctl_init("fs", locks_sysctls);
return 0;
}
early_initcall(init_fs_locks_sysctls);
#endif /* CONFIG_SYSCTL */
/*
* The global file_lock_list is only used for displaying /proc/locks, so we

7
fs/mpage.c
View File

@ -29,7 +29,6 @@
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include <linux/pagevec.h>
#include <linux/cleancache.h>
#include "internal.h"
/*
@ -284,12 +283,6 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
SetPageMappedToDisk(page);
}
if (fully_mapped && blocks_per_page == 1 && !PageUptodate(page) &&
cleancache_get_page(page) == 0) {
SetPageUptodate(page);
goto confused;
}
/*
* This page will go to BIO. Do we need to send this BIO off first?
*/

58
fs/namei.c
View File

@ -1020,10 +1020,60 @@ static inline void put_link(struct nameidata *nd)
path_put(&last->link);
}
int sysctl_protected_symlinks __read_mostly = 0;
int sysctl_protected_hardlinks __read_mostly = 0;
int sysctl_protected_fifos __read_mostly;
int sysctl_protected_regular __read_mostly;
static int sysctl_protected_symlinks __read_mostly;
static int sysctl_protected_hardlinks __read_mostly;
static int sysctl_protected_fifos __read_mostly;
static int sysctl_protected_regular __read_mostly;
#ifdef CONFIG_SYSCTL
static struct ctl_table namei_sysctls[] = {
{
.procname = "protected_symlinks",
.data = &sysctl_protected_symlinks,
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "protected_hardlinks",
.data = &sysctl_protected_hardlinks,
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
{
.procname = "protected_fifos",
.data = &sysctl_protected_fifos,
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_TWO,
},
{
.procname = "protected_regular",
.data = &sysctl_protected_regular,
.maxlen = sizeof(int),
.mode = 0600,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_TWO,
},
{ }
};
static int __init init_fs_namei_sysctls(void)
{
register_sysctl_init("fs", namei_sysctls);
return 0;
}
fs_initcall(init_fs_namei_sysctls);
#endif /* CONFIG_SYSCTL */
/**
* may_follow_link - Check symlink following for unsafe situations

24
fs/namespace.c
View File

@ -37,7 +37,7 @@
#include "internal.h"
/* Maximum number of mounts in a mount namespace */
unsigned int sysctl_mount_max __read_mostly = 100000;
static unsigned int sysctl_mount_max __read_mostly = 100000;
static unsigned int m_hash_mask __read_mostly;
static unsigned int m_hash_shift __read_mostly;
@ -4620,3 +4620,25 @@ const struct proc_ns_operations mntns_operations = {
.install = mntns_install,
.owner = mntns_owner,
};
#ifdef CONFIG_SYSCTL
static struct ctl_table fs_namespace_sysctls[] = {
{
.procname = "mount-max",
.data = &sysctl_mount_max,
.maxlen = sizeof(unsigned int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ONE,
},
{ }
};
static int __init init_fs_namespace_sysctls(void)
{
register_sysctl_init("fs", fs_namespace_sysctls);
return 0;
}
fs_initcall(init_fs_namespace_sysctls);
#endif /* CONFIG_SYSCTL */

21
fs/notify/dnotify/dnotify.c
View File

@ -19,7 +19,25 @@
#include <linux/fdtable.h>
#include <linux/fsnotify_backend.h>
int dir_notify_enable __read_mostly = 1;
static int dir_notify_enable __read_mostly = 1;
#ifdef CONFIG_SYSCTL
static struct ctl_table dnotify_sysctls[] = {
{
.procname = "dir-notify-enable",
.data = &dir_notify_enable,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{}
};
static void __init dnotify_sysctl_init(void)
{
register_sysctl_init("fs", dnotify_sysctls);
}
#else
#define dnotify_sysctl_init() do { } while (0)
#endif
static struct kmem_cache *dnotify_struct_cache __read_mostly;
static struct kmem_cache *dnotify_mark_cache __read_mostly;
@ -386,6 +404,7 @@ static int __init dnotify_init(void)
dnotify_group = fsnotify_alloc_group(&dnotify_fsnotify_ops);
if (IS_ERR(dnotify_group))
panic("unable to allocate fsnotify group for dnotify\n");
dnotify_sysctl_init();
return 0;
}

10
fs/notify/fanotify/fanotify_user.c
View File

@ -59,7 +59,7 @@ static int fanotify_max_queued_events __read_mostly;
static long ft_zero = 0;
static long ft_int_max = INT_MAX;
struct ctl_table fanotify_table[] = {
static struct ctl_table fanotify_table[] = {
{
.procname = "max_user_groups",
.data = &init_user_ns.ucount_max[UCOUNT_FANOTIFY_GROUPS],
@ -88,6 +88,13 @@ struct ctl_table fanotify_table[] = {
},
{ }
};
static void __init fanotify_sysctls_init(void)
{
register_sysctl("fs/fanotify", fanotify_table);
}
#else
#define fanotify_sysctls_init() do { } while (0)
#endif /* CONFIG_SYSCTL */
/*
@ -1743,6 +1750,7 @@ static int __init fanotify_user_setup(void)
init_user_ns.ucount_max[UCOUNT_FANOTIFY_GROUPS] =
FANOTIFY_DEFAULT_MAX_GROUPS;
init_user_ns.ucount_max[UCOUNT_FANOTIFY_MARKS] = max_marks;
fanotify_sysctls_init();
return 0;
}

11
fs/notify/inotify/inotify_user.c
View File

@ -58,7 +58,7 @@ struct kmem_cache *inotify_inode_mark_cachep __read_mostly;
static long it_zero = 0;
static long it_int_max = INT_MAX;
struct ctl_table inotify_table[] = {
static struct ctl_table inotify_table[] = {
{
.procname = "max_user_instances",
.data = &init_user_ns.ucount_max[UCOUNT_INOTIFY_INSTANCES],
@ -87,6 +87,14 @@ struct ctl_table inotify_table[] = {
},
{ }
};
static void __init inotify_sysctls_init(void)
{
register_sysctl("fs/inotify", inotify_table);
}
#else
#define inotify_sysctls_init() do { } while (0)
#endif /* CONFIG_SYSCTL */
static inline __u32 inotify_arg_to_mask(struct inode *inode, u32 arg)
@ -849,6 +857,7 @@ static int __init inotify_user_setup(void)
inotify_max_queued_events = 16384;
init_user_ns.ucount_max[UCOUNT_INOTIFY_INSTANCES] = 128;
init_user_ns.ucount_max[UCOUNT_INOTIFY_WATCHES] = watches_max;
inotify_sysctls_init();
return 0;
}

1
fs/ntfs3/ntfs_fs.h
View File

@ -11,7 +11,6 @@
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/cleancache.h>
#include <linux/fs.h>
#include <linux/highmem.h>
#include <linux/kernel.h>

25
fs/ocfs2/stackglue.c
View File

@ -672,31 +672,8 @@ static struct ctl_table ocfs2_mod_table[] = {
{ }
};
static struct ctl_table ocfs2_kern_table[] = {
{
.procname = "ocfs2",
.data = NULL,
.maxlen = 0,
.mode = 0555,
.child = ocfs2_mod_table
},
{ }
};
static struct ctl_table ocfs2_root_table[] = {
{
.procname = "fs",
.data = NULL,
.maxlen = 0,
.mode = 0555,
.child = ocfs2_kern_table
},
{ }
};
static struct ctl_table_header *ocfs2_table_header;
/*
* Initialization
*/
@ -705,7 +682,7 @@ static int __init ocfs2_stack_glue_init(void)
{
strcpy(cluster_stack_name, OCFS2_STACK_PLUGIN_O2CB);
ocfs2_table_header = register_sysctl_table(ocfs2_root_table);
ocfs2_table_header = register_sysctl("fs/ocfs2", ocfs2_mod_table);
if (!ocfs2_table_header) {
printk(KERN_ERR
"ocfs2 stack glue: unable to register sysctl\n");

2
fs/ocfs2/super.c
View File

@ -25,7 +25,6 @@
#include <linux/mount.h>
#include <linux/seq_file.h>
#include <linux/quotaops.h>
#include <linux/cleancache.h>
#include <linux/signal.h>
#define CREATE_TRACE_POINTS
@ -2283,7 +2282,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
mlog_errno(status);
goto bail;
}
cleancache_init_shared_fs(sb);
osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
if (!osb->ocfs2_wq) {

64
fs/pipe.c
View File

@ -25,6 +25,7 @@
#include <linux/fcntl.h>
#include <linux/memcontrol.h>
#include <linux/watch_queue.h>
#include <linux/sysctl.h>
#include <linux/uaccess.h>
#include <asm/ioctls.h>
@ -50,13 +51,13 @@
* The max size that a non-root user is allowed to grow the pipe. Can
* be set by root in /proc/sys/fs/pipe-max-size
*/
unsigned int pipe_max_size = 1048576;
static unsigned int pipe_max_size = 1048576;
/* Maximum allocatable pages per user. Hard limit is unset by default, soft
* matches default values.
*/
unsigned long pipe_user_pages_hard;
unsigned long pipe_user_pages_soft = PIPE_DEF_BUFFERS * INR_OPEN_CUR;
static unsigned long pipe_user_pages_hard;
static unsigned long pipe_user_pages_soft = PIPE_DEF_BUFFERS * INR_OPEN_CUR;
/*
* We use head and tail indices that aren't masked off, except at the point of
@ -1428,6 +1429,60 @@ static struct file_system_type pipe_fs_type = {
.kill_sb = kill_anon_super,
};
#ifdef CONFIG_SYSCTL
static int do_proc_dopipe_max_size_conv(unsigned long *lvalp,
unsigned int *valp,
int write, void *data)
{
if (write) {
unsigned int val;
val = round_pipe_size(*lvalp);
if (val == 0)
return -EINVAL;
*valp = val;
} else {
unsigned int val = *valp;
*lvalp = (unsigned long) val;
}
return 0;
}
static int proc_dopipe_max_size(struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos)
{
return do_proc_douintvec(table, write, buffer, lenp, ppos,
do_proc_dopipe_max_size_conv, NULL);
}
static struct ctl_table fs_pipe_sysctls[] = {
{
.procname = "pipe-max-size",
.data = &pipe_max_size,
.maxlen = sizeof(pipe_max_size),
.mode = 0644,
.proc_handler = proc_dopipe_max_size,
},
{
.procname = "pipe-user-pages-hard",
.data = &pipe_user_pages_hard,
.maxlen = sizeof(pipe_user_pages_hard),
.mode = 0644,
.proc_handler = proc_doulongvec_minmax,
},
{
.procname = "pipe-user-pages-soft",
.data = &pipe_user_pages_soft,
.maxlen = sizeof(pipe_user_pages_soft),
.mode = 0644,
.proc_handler = proc_doulongvec_minmax,
},
{ }
};
#endif
static int __init init_pipe_fs(void)
{
int err = register_filesystem(&pipe_fs_type);
@ -1439,6 +1494,9 @@ static int __init init_pipe_fs(void)
unregister_filesystem(&pipe_fs_type);
}
}
#ifdef CONFIG_SYSCTL
register_sysctl_init("fs", fs_pipe_sysctls);
#endif
return err;
}

6
fs/proc/generic.c
View File

@ -791,12 +791,6 @@ void proc_remove(struct proc_dir_entry *de)
}
EXPORT_SYMBOL(proc_remove);
void *PDE_DATA(const struct inode *inode)
{
return __PDE_DATA(inode);
}
EXPORT_SYMBOL(PDE_DATA);
/*
* Pull a user buffer into memory and pass it to the file's write handler if
* one is supplied. The ->write() method is permitted to modify the

1
fs/proc/inode.c
View File

@ -650,6 +650,7 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
return NULL;
}
inode->i_private = de->data;
inode->i_ino = de->low_ino;
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
PROC_I(inode)->pde = de;

5
fs/proc/internal.h
View File

@ -115,11 +115,6 @@ static inline struct proc_dir_entry *PDE(const struct inode *inode)
return PROC_I(inode)->pde;
}
static inline void *__PDE_DATA(const struct inode *inode)
{
return PDE(inode)->data;
}
static inline struct pid *proc_pid(const struct inode *inode)
{
return PROC_I(inode)->pid;

8
fs/proc/proc_net.c
View File

@ -138,7 +138,7 @@ EXPORT_SYMBOL_GPL(proc_create_net_data);
* @parent: The parent directory in which to create.
* @ops: The seq_file ops with which to read the file.
* @write: The write method with which to 'modify' the file.
* @data: Data for retrieval by PDE_DATA().
* @data: Data for retrieval by pde_data().
*
* Create a network namespaced proc file in the @parent directory with the
* specified @name and @mode that allows reading of a file that displays a
@ -153,7 +153,7 @@ EXPORT_SYMBOL_GPL(proc_create_net_data);
* modified by the @write function. @write should return 0 on success.
*
* The @data value is accessible from the @show and @write functions by calling
* PDE_DATA() on the file inode. The network namespace must be accessed by
* pde_data() on the file inode. The network namespace must be accessed by
* calling seq_file_net() on the seq_file struct.
*/
struct proc_dir_entry *proc_create_net_data_write(const char *name, umode_t mode,
@ -230,7 +230,7 @@ EXPORT_SYMBOL_GPL(proc_create_net_single);
* @parent: The parent directory in which to create.
* @show: The seqfile show method with which to read the file.
* @write: The write method with which to 'modify' the file.
* @data: Data for retrieval by PDE_DATA().
* @data: Data for retrieval by pde_data().
*
* Create a network-namespaced proc file in the @parent directory with the
* specified @name and @mode that allows reading of a file that displays a
@ -245,7 +245,7 @@ EXPORT_SYMBOL_GPL(proc_create_net_single);
* modified by the @write function. @write should return 0 on success.
*
* The @data value is accessible from the @show and @write functions by calling
* PDE_DATA() on the file inode. The network namespace must be accessed by
* pde_data() on the file inode. The network namespace must be accessed by
* calling seq_file_single_net() on the seq_file struct.
*/
struct proc_dir_entry *proc_create_net_single_write(const char *name, umode_t mode,

63
fs/proc/proc_sysctl.c
View File

@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/bpf-cgroup.h>
#include <linux/mount.h>
#include <linux/kmemleak.h>
#include "internal.h"
static const struct dentry_operations proc_sys_dentry_operations;
@ -25,15 +26,32 @@ static const struct file_operations proc_sys_dir_file_operations;
static const struct inode_operations proc_sys_dir_operations;
/* shared constants to be used in various sysctls */
const int sysctl_vals[] = { 0, 1, INT_MAX };
const int sysctl_vals[] = { -1, 0, 1, 2, 4, 100, 200, 1000, 3000, INT_MAX, 65535 };
EXPORT_SYMBOL(sysctl_vals);
const unsigned long sysctl_long_vals[] = { 0, 1, LONG_MAX };
EXPORT_SYMBOL_GPL(sysctl_long_vals);
/* Support for permanently empty directories */
struct ctl_table sysctl_mount_point[] = {
{ }
};
/**
* register_sysctl_mount_point() - registers a sysctl mount point
* @path: path for the mount point
*
* Used to create a permanently empty directory to serve as mount point.
* There are some subtle but important permission checks this allows in the
* case of unprivileged mounts.
*/
struct ctl_table_header *register_sysctl_mount_point(const char *path)
{
return register_sysctl(path, sysctl_mount_point);
}
EXPORT_SYMBOL(register_sysctl_mount_point);
static bool is_empty_dir(struct ctl_table_header *head)
{
return head->ctl_table[0].child == sysctl_mount_point;
@ -1383,6 +1401,38 @@ struct ctl_table_header *register_sysctl(const char *path, struct ctl_table *tab
}
EXPORT_SYMBOL(register_sysctl);
/**
* __register_sysctl_init() - register sysctl table to path
* @path: path name for sysctl base
* @table: This is the sysctl table that needs to be registered to the path
* @table_name: The name of sysctl table, only used for log printing when
* registration fails
*
* The sysctl interface is used by userspace to query or modify at runtime
* a predefined value set on a variable. These variables however have default
* values pre-set. Code which depends on these variables will always work even
* if register_sysctl() fails. If register_sysctl() fails you'd just loose the
* ability to query or modify the sysctls dynamically at run time. Chances of
* register_sysctl() failing on init are extremely low, and so for both reasons
* this function does not return any error as it is used by initialization code.
*
* Context: Can only be called after your respective sysctl base path has been
* registered. So for instance, most base directories are registered early on
* init before init levels are processed through proc_sys_init() and
* sysctl_init_bases().
*/
void __init __register_sysctl_init(const char *path, struct ctl_table *table,
const char *table_name)
{
struct ctl_table_header *hdr = register_sysctl(path, table);
if (unlikely(!hdr)) {
pr_err("failed when register_sysctl %s to %s\n", table_name, path);
return;
}
kmemleak_not_leak(hdr);
}
static char *append_path(const char *path, char *pos, const char *name)
{
int namelen;
@ -1596,6 +1646,15 @@ struct ctl_table_header *register_sysctl_table(struct ctl_table *table)
}
EXPORT_SYMBOL(register_sysctl_table);
int __register_sysctl_base(struct ctl_table *base_table)
{
struct ctl_table_header *hdr;
hdr = register_sysctl_table(base_table);
kmemleak_not_leak(hdr);
return 0;
}
static void put_links(struct ctl_table_header *header)
{
struct ctl_table_set *root_set = &sysctl_table_root.default_set;
@ -1709,7 +1768,7 @@ int __init proc_sys_init(void)
proc_sys_root->proc_dir_ops = &proc_sys_dir_file_operations;
proc_sys_root->nlink = 0;
return sysctl_init();
return sysctl_init_bases();
}
struct sysctl_alias {

3
fs/super.c
View File

@ -31,7 +31,6 @@
#include <linux/mutex.h>
#include <linux/backing-dev.h>
#include <linux/rculist_bl.h>
#include <linux/cleancache.h>
#include <linux/fscrypt.h>
#include <linux/fsnotify.h>
#include <linux/lockdep.h>
@ -260,7 +259,6 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags,
s->s_time_gran = 1000000000;
s->s_time_min = TIME64_MIN;
s->s_time_max = TIME64_MAX;
s->cleancache_poolid = CLEANCACHE_NO_POOL;
s->s_shrink.seeks = DEFAULT_SEEKS;
s->s_shrink.scan_objects = super_cache_scan;
@ -330,7 +328,6 @@ void deactivate_locked_super(struct super_block *s)
{
struct file_system_type *fs = s->s_type;
if (atomic_dec_and_test(&s->s_active)) {
cleancache_invalidate_fs(s);
unregister_shrinker(&s->s_shrink);
fs->kill_sb(s);

39
fs/sysctls.c Normal file
View File

@ -0,0 +1,39 @@
// SPDX-License-Identifier: GPL-2.0
/*
* /proc/sys/fs shared sysctls
*
* These sysctls are shared between different filesystems.
*/
#include <linux/init.h>
#include <linux/sysctl.h>
static struct ctl_table fs_shared_sysctls[] = {
{
.procname = "overflowuid",
.data = &fs_overflowuid,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_MAXOLDUID,
},
{
.procname = "overflowgid",
.data = &fs_overflowgid,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_MAXOLDUID,
},
{ }
};
DECLARE_SYSCTL_BASE(fs, fs_shared_sysctls);
static int __init init_fs_sysctls(void)
{
return register_sysctl_base(fs);
}
early_initcall(init_fs_sysctls);

4
include/linux/aio.h
View File

@ -20,8 +20,4 @@ static inline void kiocb_set_cancel_fn(struct kiocb *req,
kiocb_cancel_fn *cancel) { }
#endif /* CONFIG_AIO */
/* for sysctl: */
extern unsigned long aio_nr;
extern unsigned long aio_max_nr;
#endif /* __LINUX__AIO_H */

124
include/linux/cleancache.h
View File

@ -1,124 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_CLEANCACHE_H
#define _LINUX_CLEANCACHE_H
#include <linux/fs.h>
#include <linux/exportfs.h>
#include <linux/mm.h>
#define CLEANCACHE_NO_POOL -1
#define CLEANCACHE_NO_BACKEND -2
#define CLEANCACHE_NO_BACKEND_SHARED -3
#define CLEANCACHE_KEY_MAX 6
/*
* cleancache requires every file with a page in cleancache to have a
* unique key unless/until the file is removed/truncated. For some
* filesystems, the inode number is unique, but for "modern" filesystems
* an exportable filehandle is required (see exportfs.h)
*/
struct cleancache_filekey {
union {
ino_t ino;
__u32 fh[CLEANCACHE_KEY_MAX];
u32 key[CLEANCACHE_KEY_MAX];
} u;
};
struct cleancache_ops {
int (*init_fs)(size_t);
int (*init_shared_fs)(uuid_t *uuid, size_t);
int (*get_page)(int, struct cleancache_filekey,
pgoff_t, struct page *);
void (*put_page)(int, struct cleancache_filekey,
pgoff_t, struct page *);
void (*invalidate_page)(int, struct cleancache_filekey, pgoff_t);
void (*invalidate_inode)(int, struct cleancache_filekey);
void (*invalidate_fs)(int);
};
extern int cleancache_register_ops(const struct cleancache_ops *ops);
extern void __cleancache_init_fs(struct super_block *);
extern void __cleancache_init_shared_fs(struct super_block *);
extern int __cleancache_get_page(struct page *);
extern void __cleancache_put_page(struct page *);
extern void __cleancache_invalidate_page(struct address_space *, struct page *);
extern void __cleancache_invalidate_inode(struct address_space *);
extern void __cleancache_invalidate_fs(struct super_block *);
#ifdef CONFIG_CLEANCACHE
#define cleancache_enabled (1)
static inline bool cleancache_fs_enabled_mapping(struct address_space *mapping)
{
return mapping->host->i_sb->cleancache_poolid >= 0;
}
static inline bool cleancache_fs_enabled(struct page *page)
{
return cleancache_fs_enabled_mapping(page->mapping);
}
#else
#define cleancache_enabled (0)
#define cleancache_fs_enabled(_page) (0)
#define cleancache_fs_enabled_mapping(_page) (0)
#endif
/*
* The shim layer provided by these inline functions allows the compiler
* to reduce all cleancache hooks to nothingness if CONFIG_CLEANCACHE
* is disabled, to a single global variable check if CONFIG_CLEANCACHE
* is enabled but no cleancache "backend" has dynamically enabled it,
* and, for the most frequent cleancache ops, to a single global variable
* check plus a superblock element comparison if CONFIG_CLEANCACHE is enabled
* and a cleancache backend has dynamically enabled cleancache, but the
* filesystem referenced by that cleancache op has not enabled cleancache.
* As a result, CONFIG_CLEANCACHE can be enabled by default with essentially
* no measurable performance impact.
*/
static inline void cleancache_init_fs(struct super_block *sb)
{
if (cleancache_enabled)
__cleancache_init_fs(sb);
}
static inline void cleancache_init_shared_fs(struct super_block *sb)
{
if (cleancache_enabled)
__cleancache_init_shared_fs(sb);
}
static inline int cleancache_get_page(struct page *page)
{
if (cleancache_enabled && cleancache_fs_enabled(page))
return __cleancache_get_page(page);
return -1;
}
static inline void cleancache_put_page(struct page *page)
{
if (cleancache_enabled && cleancache_fs_enabled(page))
__cleancache_put_page(page);
}
static inline void cleancache_invalidate_page(struct address_space *mapping,
struct page *page)
{
/* careful... page->mapping is NULL sometimes when this is called */
if (cleancache_enabled && cleancache_fs_enabled_mapping(mapping))
__cleancache_invalidate_page(mapping, page);
}
static inline void cleancache_invalidate_inode(struct address_space *mapping)
{
if (cleancache_enabled && cleancache_fs_enabled_mapping(mapping))
__cleancache_invalidate_inode(mapping);
}
static inline void cleancache_invalidate_fs(struct super_block *sb)
{
if (cleancache_enabled)
__cleancache_invalidate_fs(sb);
}
#endif /* _LINUX_CLEANCACHE_H */

10
include/linux/coredump.h
View File

@ -14,10 +14,6 @@ struct core_vma_metadata {
unsigned long dump_size;
};
extern int core_uses_pid;
extern char core_pattern[];
extern unsigned int core_pipe_limit;
/*
* These are the only things you should do on a core-file: use only these
* functions to write out all the necessary info.
@ -37,4 +33,10 @@ extern void do_coredump(const kernel_siginfo_t *siginfo);
static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
#endif
#if defined(CONFIG_COREDUMP) && defined(CONFIG_SYSCTL)
extern void validate_coredump_safety(void);
#else
static inline void validate_coredump_safety(void) {}
#endif
#endif /* _LINUX_COREDUMP_H */

10
include/linux/dcache.h
View File

@ -61,16 +61,6 @@ extern const struct qstr empty_name;
extern const struct qstr slash_name;
extern const struct qstr dotdot_name;
struct dentry_stat_t {
long nr_dentry;
long nr_unused;
long age_limit; /* age in seconds */
long want_pages; /* pages requested by system */
long nr_negative; /* # of unused negative dentries */
long dummy; /* Reserved for future use */
};
extern struct dentry_stat_t dentry_stat;
/*
* Try to keep struct dentry aligned on 64 byte cachelines (this will
* give reasonable cacheline footprint with larger lines without the

1
include/linux/dnotify.h
View File

@ -29,7 +29,6 @@ struct dnotify_struct {
FS_CREATE | FS_RENAME |\
FS_MOVED_FROM | FS_MOVED_TO)
extern int dir_notify_enable;
extern void dnotify_flush(struct file *, fl_owner_t);
extern int fcntl_dirnotify(int, struct file *, unsigned long);

2
include/linux/fanotify.h
View File

@ -5,8 +5,6 @@
#include <linux/sysctl.h>
#include <uapi/linux/fanotify.h>
extern struct ctl_table fanotify_table[]; /* for sysctl */
#define FAN_GROUP_FLAG(group, flag) \
((group)->fanotify_data.flags & (flag))

Some files were not shown because too many files have changed in this diff Show More