Commit Graph

915346 Commits

Author SHA1 Message Date
Anshuman Khandual 6cb4d9a287 mm/vma: introduce VM_ACCESS_FLAGS
There are many places where all basic VMA access flags (read, write,
exec) are initialized or checked against as a group.  One such example
is during page fault.  Existing vma_is_accessible() wrapper already
creates the notion of VMA accessibility as a group access permissions.

Hence lets just create VM_ACCESS_FLAGS (VM_READ|VM_WRITE|VM_EXEC) which
will not only reduce code duplication but also extend the VMA
accessibility concept in general.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Springer <rspringer@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/1583391014-8170-3-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Anshuman Khandual c62da0c35d mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS
There are many platforms with exact same value for VM_DATA_DEFAULT_FLAGS
This creates a default value for VM_DATA_DEFAULT_FLAGS in line with the
existing VM_STACK_DEFAULT_FLAGS.  While here, also define some more
macros with standard VMA access flag combinations that are used
frequently across many platforms.  Apart from simplification, this
reduces code duplication as well.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Guo Ren <guoren@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Chris Zankel <chris@zankel.net>
Link: http://lkml.kernel.org/r/1583391014-8170-2-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Arjun Roy 8cd3984d81 mm/memory.c: add vm_insert_pages()
Add the ability to insert multiple pages at once to a user VM with lower
PTE spinlock operations.

The intention of this patch-set is to reduce atomic ops for tcp zerocopy
receives, which normally hits the same spinlock multiple times
consecutively.

[akpm@linux-foundation.org: pte_alloc() no longer takes the `addr' argument]
[arjunroy@google.com: add missing page_count() check to vm_insert_pages()]
  Link: http://lkml.kernel.org/r/20200214005929.104481-1-arjunroy.kdev@gmail.com
[arjunroy@google.com: vm_insert_pages() checks if pte_index defined]
  Link: http://lkml.kernel.org/r/20200228054714.204424-2-arjunroy.kdev@gmail.com
Signed-off-by: Arjun Roy <arjunroy@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: http://lkml.kernel.org/r/20200128025958.43490-2-arjunroy.kdev@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Arjun Roy c97078bd21 mm: define pte_index as macro for x86
pte_index() is either defined as a macro (e.g.  sparc64) or as an
inlined function (e.g.  x86).  vm_insert_pages() depends on pte_index
but it is not defined on all platforms (e.g.  m68k).

To fix compilation of vm_insert_pages() on architectures not providing
pte_index(), we perform the following fix:

0. For platforms where it is meaningful, and defined as a macro, no
    change is needed.
1. For platforms where it is meaningful and defined as an inlined
    function, and we want to use it with vm_insert_pages(), we define
    a degenerate macro of the form:  #define pte_index pte_index
2. vm_insert_pages() checks for the existence of a pte_index macro
   definition. If found, it implements a batched insert. If not found,
   it devolves to calling vm_insert_page() in a loop.

This patch implements step 1 for x86.

v3 of this patch fixes a compilation warning for an unused method.
v2 of this patch moved a macro definition to a more readable location.

Signed-off-by: Arjun Roy <arjunroy@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: http://lkml.kernel.org/r/20200228054714.204424-1-arjunroy.kdev@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Arjun Roy 251a0ffeae mm: bring sparc pte_index() semantics inline with other platforms
pte_index() on platforms other than sparc return a numerical index.  On
sparc, it returns a pte_t*.  This presents an issue for
vm_insert_pages(), which relies on pte_index() to find the offset for a
pte within a pmd, for batched inserts.

This patch:
1. Modifies pte_index() for sparc to return a numerical index, like
   other platforms,
2. Defines pte_entry() for sparc which returns a pte_t*
   (as pte_index() used to),
3. Converts existing sparc callers for pte_index() to use pte_entry().

[sfr@canb.auug.org.au: remove pte_entry and just directly modified pte_offset_kernel instead]
Signed-off-by: Arjun Roy <arjunroy@google.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Cc: David Miller <davem@davemloft.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Arjun Roy <arjunroy.kdev@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Link: http://lkml.kernel.org/r/20200227105045.6b421d9f@canb.auug.org.au
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Arjun Roy 8efd6f5b17 mm/memory.c: refactor insert_page to prepare for batched-lock insert
Add helper methods for vm_insert_page()/insert_page() to prepare for
vm_insert_pages(), which batch-inserts pages to reduce spinlock
operations when inserting multiple consecutive pages into the user page
table.

The intention of this patch-set is to reduce atomic ops for tcp zerocopy
receives, which normally hits the same spinlock multiple times
consecutively.

Signed-off-by: Arjun Roy <arjunroy@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: http://lkml.kernel.org/r/20200128025958.43490-1-arjunroy.kdev@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Jaewon Kim 09ef5283fd mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area
On passing requirement to vm_unmapped_area, arch_get_unmapped_area and
arch_get_unmapped_area_topdown did not set align_offset.  Internally on
both unmapped_area and unmapped_area_topdown, if info->align_mask is 0,
then info->align_offset was meaningless.

But commit df529cabb7 ("mm: mmap: add trace point of
vm_unmapped_area") always prints info->align_offset even though it is
uninitialized.

Fix this uninitialized value issue by setting it to 0 explicitly.

Before:
  vm_unmapped_area: addr=0x755b155000 err=0 total_vm=0x15aaf0 flags=0x1 len=0x109000 lo=0x8000 hi=0x75eed48000 mask=0x0 ofs=0x4022

After:
  vm_unmapped_area: addr=0x74a4ca1000 err=0 total_vm=0x168ab1 flags=0x1 len=0x9000 lo=0x8000 hi=0x753d94b000 mask=0x0 ofs=0x0

Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michel Lespinasse <walken@google.com>
Cc: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20200409094035.19457-1-jaewon31.kim@samsung.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Roman Gushchin cf11e85fc0 mm: hugetlb: optionally allocate gigantic hugepages using cma
Commit 944d9fec8d ("hugetlb: add support for gigantic page allocation
at runtime") has added the run-time allocation of gigantic pages.

However it actually works only at early stages of the system loading,
when the majority of memory is free.  After some time the memory gets
fragmented by non-movable pages, so the chances to find a contiguous 1GB
block are getting close to zero.  Even dropping caches manually doesn't
help a lot.

At large scale rebooting servers in order to allocate gigantic hugepages
is quite expensive and complex.  At the same time keeping some constant
percentage of memory in reserved hugepages even if the workload isn't
using it is a big waste: not all workloads can benefit from using 1 GB
pages.

The following solution can solve the problem:
1) On boot time a dedicated cma area* is reserved. The size is passed
   as a kernel argument.
2) Run-time allocations of gigantic hugepages are performed using the
   cma allocator and the dedicated cma area

In this case gigantic hugepages can be allocated successfully with a
high probability, however the memory isn't completely wasted if nobody
is using 1GB hugepages: it can be used for pagecache, anon memory, THPs,
etc.

* On a multi-node machine a per-node cma area is allocated on each node.
  Following gigantic hugetlb allocation are using the first available
  numa node if the mask isn't specified by a user.

Usage:
1) configure the kernel to allocate a cma area for hugetlb allocations:
   pass hugetlb_cma=10G as a kernel argument

2) allocate hugetlb pages as usual, e.g.
   echo 10 > /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages

If the option isn't enabled or the allocation of the cma area failed,
the current behavior of the system is preserved.

x86 and arm-64 are covered by this patch, other architectures can be
trivially added later.

The patch contains clean-ups and fixes proposed and implemented by Aslan
Bakirov and Randy Dunlap.  It also contains ideas and suggestions
proposed by Rik van Riel, Michal Hocko and Mike Kravetz.  Thanks!

Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Andreas Schaufler <andreas.schaufler@gmx.de>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Michal Hocko <mhocko@kernel.org>
Cc: Aslan Bakirov <aslan@fb.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Link: http://lkml.kernel.org/r/20200407163840.92263-3-guro@fb.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Aslan Bakirov 8676af1ff2 mm: cma: NUMA node interface
I've noticed that there is no interface exposed by CMA which would let
me to declare contigous memory on particular NUMA node.

This patchset adds the ability to try to allocate contiguous memory on a
specific node.  It will fallback to other nodes if the specified one
doesn't work.

Implement a new method for declaring contigous memory on particular node
and keep cma_declare_contiguous() as a wrapper.

[akpm@linux-foundation.org: build fix]
Signed-off-by: Aslan Bakirov <aslan@fb.com>
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@kernel.org>
Cc: Andreas Schaufler <andreas.schaufler@gmx.de>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Joonsoo Kim <js1304@gmail.com>
Link: http://lkml.kernel.org/r/20200407163840.92263-2-guro@fb.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Changwei Ge 783fda856e ocfs2: no need try to truncate file beyond i_size
Linux fallocate(2) with FALLOC_FL_PUNCH_HOLE mode set, its offset can
exceed the inode size.  Ocfs2 now doesn't allow that offset beyond inode
size.  This restriction is not necessary and violates fallocate(2)
semantics.

If fallocate(2) offset is beyond inode size, just return success and do
nothing further.

Otherwise, ocfs2 will crash the kernel.

  kernel BUG at fs/ocfs2//alloc.c:7264!
   ocfs2_truncate_inline+0x20f/0x360 [ocfs2]
   ocfs2_remove_inode_range+0x23c/0xcb0 [ocfs2]
   __ocfs2_change_file_space+0x4a5/0x650 [ocfs2]
   ocfs2_fallocate+0x83/0xa0 [ocfs2]
   vfs_fallocate+0x148/0x230
   SyS_fallocate+0x48/0x80
   do_syscall_64+0x79/0x170

Signed-off-by: Changwei Ge <chge@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200407082754.17565-1-chge@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Jason Yan 8b885f53b0 mm/page_alloc: make pcpu_drain_mutex and pcpu_drain static
Fix the following sparse warning:

  mm/page_alloc.c:106:1: warning: symbol 'pcpu_drain_mutex' was not declared. Should it be static?
  mm/page_alloc.c:107:1: warning: symbol '__pcpu_scope_pcpu_drain' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200407023925.46438-1-yanaijie@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
Randy Dunlap e6a0a7ad1c mm/page_alloc.c: fix kernel-doc warning
Add description of function parameter 'mt' to fix kernel-doc warning:

  mm/page_alloc.c:3246: warning: Function parameter or member 'mt' not described in '__putback_isolated_page'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Link: http://lkml.kernel.org/r/02998bd4-0b82-2f15-2570-f86130304d1e@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:20 -07:00
Mauro Carvalho Chehab 2370ae4b1d docs: mm: slab.h: fix a broken cross-reference
There is a typo at the cross-reference link, causing this warning:

  include/linux/slab.h:11: WARNING: undefined label: memory-allocation (if the link has no caption the label must precede a section header)

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: http://lkml.kernel.org/r/0aeac24235d356ebd935d11e147dcc6edbb6465c.1586359676.git.mchehab+huawei@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:20 -07:00
Qiujun Huang b991cee567 mm, slab_common: fix a typo in comment "eariler"->"earlier"
There is a typo in comment, fix it.
s/eariler/earlier/

Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Christoph Lameter <cl@linux.com>
Link: http://lkml.kernel.org/r/20200405160544.1246-1-hqjagain@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:20 -07:00
Jakub Kicinski 9b8b17541f mm, memcg: do not high throttle allocators based on wraparound
If a cgroup violates its memory.high constraints, we may end up unduly
penalising it.  For example, for the following hierarchy:

  A:   max high, 20 usage
  A/B: 9 high, 10 usage
  A/C: max high, 10 usage

We would end up doing the following calculation below when calculating
high delay for A/B:

  A/B: 10 - 9 = 1...
  A:   20 - PAGE_COUNTER_MAX = 21, so set max_overage to 21.

This gets worse with higher disparities in usage in the parent.

I have no idea how this disappeared from the final version of the patch,
but it is certainly Not Good(tm).  This wasn't obvious in testing because,
for a simple cgroup hierarchy with only one child, the result is usually
roughly the same.  It's only in more complex hierarchies that things go
really awry (although still, the effects are limited to a maximum of 2
seconds in schedule_timeout_killable at a maximum).

[chris@chrisdown.name: changelog]
Fixes: e26733e0d0 ("mm, memcg: throttle allocators based on ancestral memory.high")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Chris Down <chris@chrisdown.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@vger.kernel.org>	[5.4.x]
Link: http://lkml.kernel.org/r/20200331152424.GA1019937@chrisdown.name
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:20 -07:00
Simon Gander 25efb2ffdf hfsplus: fix crash and filesystem corruption when deleting files
When removing files containing extended attributes, the hfsplus driver may
remove the wrong entries from the attributes b-tree, causing major
filesystem damage and in some cases even kernel crashes.

To remove a file, all its extended attributes have to be removed as well.
The driver does this by looking up all keys in the attributes b-tree with
the cnid of the file.  Each of these entries then gets deleted using the
key used for searching, which doesn't contain the attribute's name when it
should.  Since the key doesn't contain the name, the deletion routine will
not find the correct entry and instead remove the one in front of it.  If
parent nodes have to be modified, these become corrupt as well.  This
causes invalid links and unsorted entries that not even macOS's fsck_hfs
is able to fix.

To fix this, modify the search key before an entry is deleted from the
attributes b-tree by copying the found entry's key into the search key,
therefore ensuring that the correct entry gets removed from the tree.

Signed-off-by: Simon Gander <simon@tuxera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Anton Altaparmakov <anton@tuxera.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200327155541.1521-1-simon@tuxera.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:20 -07:00
Sergey Senozhatsky ab6f762f0f printk: queue wake_up_klogd irq_work only if per-CPU areas are ready
printk_deferred(), similarly to printk_safe/printk_nmi, does not
immediately attempt to print a new message on the consoles, avoiding
calls into non-reentrant kernel paths, e.g. scheduler or timekeeping,
which potentially can deadlock the system.

Those printk() flavors, instead, rely on per-CPU flush irq_work to print
messages from safer contexts.  For same reasons (recursive scheduler or
timekeeping calls) printk() uses per-CPU irq_work in order to wake up
user space syslog/kmsg readers.

However, only printk_safe/printk_nmi do make sure that per-CPU areas
have been initialised and that it's safe to modify per-CPU irq_work.
This means that, for instance, should printk_deferred() be invoked "too
early", that is before per-CPU areas are initialised, printk_deferred()
will perform illegal per-CPU access.

Lech Perczak [0] reports that after commit 1b710b1b10 ("char/random:
silence a lockdep splat with printk()") user-space syslog/kmsg readers
are not able to read new kernel messages.

The reason is printk_deferred() being called too early (as was pointed
out by Petr and John).

Fix printk_deferred() and do not queue per-CPU irq_work before per-CPU
areas are initialized.

Link: https://lore.kernel.org/lkml/aa0732c6-5c4e-8a8b-a1c1-75ebe3dca05b@camlintechnologies.com/
Reported-by: Lech Perczak <l.perczak@camlintechnologies.com>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Tested-by: Jann Horn <jannh@google.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 13:18:57 -07:00
Linus Torvalds 87ad46e601 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull proc fix from Eric Biederman:
 "A brown paper bag slipped through my proc changes, and syzcaller
  caught it when the code ended up in your tree.

  I have opted to fix it the simplest cleanest way I know how, so there
  is no reasonable chance for the bug to repeat"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  proc: Use a dedicated lock in struct pid
2020-04-10 12:59:56 -07:00
Linus Torvalds 75bdc9293d pwm: Changes for v5.7-rc1
There's quite a few changes this time around. Most of these are fixes
 and cleanups, but there's also new chip support for some drivers and a
 bit of rework.
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Merge tag 'pwm/for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "There's quite a few changes this time around.

  Most of these are fixes and cleanups, but there's also new chip
  support for some drivers and a bit of rework"

* tag 'pwm/for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (33 commits)
  pwm: pca9685: Fix PWM/GPIO inter-operation
  pwm: Make pwm_apply_state_debug() static
  pwm: meson: Remove redundant assignment to variable fin_freq
  pwm: jz4740: Allow selection of PWM channels 0 and 1
  pwm: jz4740: Obtain regmap from parent node
  pwm: jz4740: Improve algorithm of clock calculation
  pwm: jz4740: Use clocks from TCU driver
  pwm: sun4i: Remove redundant needs_delay
  pwm: omap-dmtimer: Implement .apply callback
  pwm: omap-dmtimer: Do not disable PWM before changing period/duty_cycle
  pwm: omap-dmtimer: Fix PWM enabling sequence
  pwm: omap-dmtimer: Update description for PWM OMAP DM timer
  pwm: omap-dmtimer: Drop unused header file
  pwm: renesas-tpu: Drop confusing registered message
  pwm: renesas-tpu: Fix late Runtime PM enablement
  pwm: rcar: Fix late Runtime PM enablement
  dt-bindings: pwm: renesas-tpu: Document more R-Car Gen2 support
  pwm: meson: Fix confusing indentation
  pwm: pca9685: Use gpio core provided macro GPIO_LINE_DIRECTION_OUT
  pwm: pca9685: Replace CONFIG_PM with __maybe_unused
  ...
2020-04-10 12:55:20 -07:00
Linus Torvalds 6900433e0f Bug fixes for main IPMI driver, kcs updates
A couple of bug fixes for the main IPMI driver, one functional and two
 annotations.
 
 The kcs driver has some significant updates that have been pending for a
 while, but I forgot to include in next until a week ago.  But this code
 is only used by the people who are sending it to me, really, so it's not
 a big deal.  I did want it to sit in next for at least a week, and it did
 result in a fix.
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Merge tag 'for-linus-5.7-1' of git://github.com/cminyard/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "Bug fixes for main IPMI driver, kcs updates

  A couple of bug fixes for the main IPMI driver, one functional and two
  annotations.

  The kcs driver has some significant updates that have been pending for
  a while, but I forgot to include in next until a week ago. But this
  code is only used by the people who are sending it to me, really, so
  it's not a big deal. I did want it to sit in next for at least a week,
  and it did result in a fix"

* tag 'for-linus-5.7-1' of git://github.com/cminyard/linux-ipmi:
  ipmi: kcs: Fix aspeed_kcs_probe_of_v1()
  ipmi: Add missing annotation for ipmi_ssif_lock_cond() and ipmi_ssif_unlock_cond()
  ipmi: kcs: aspeed: Implement v2 bindings
  ipmi: kcs: Finish configuring ASPEED KCS device before enable
  dt-bindings: ipmi: aspeed: Introduce a v2 binding for KCS
  ipmi: fix hung processes in __get_guid()
  drivers: char: ipmi: ipmi_msghandler: Pass lockdep expression to RCU lists
2020-04-10 12:43:42 -07:00
Linus Torvalds 21c5b3c6d7 drm fixes for 5.7-rc1 (part two)
legacy:
 - fix drm_local_map.offset type
 
 ttm:
 - temporarily disable hugepages to debug amdgpu problems.
 
 prime:
 - fix sg extraction
 
 amdgpu:
 - Various Renoir fixes
 - Fix gfx clockgating sequence on gfx10
 - RAS fixes
 - Avoid MST property creation after registration
 - Various cursor/viewport fixes
 - Fix a confusing log message about optional firmwares
 
 i915:
 - Flush all the reloc_gpu batch (Chris)
 - Ignore readonly failures when updating relocs (Chris)
 - Fill all the unused space in the GGTT (Chris)
 - Return the right vswing table (Jose)
 - Don't enable DDI IO power on a TypeC port in TBT mode for ICL+ (Imre)
 
 analogix_dp:
 - probe fix
 
 virtio:
 - oob fix in object create
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Merge tag 'drm-next-2020-04-10' of git://anongit.freedesktop.org/drm/drm

Pull more drm fixes from Dave Airlie:
 "As expected, more fixes did turn up in the latter part of the week.

  The drm_local_map build regression fix is here, along with temporary
  disabling of the hugepage work due to some amdgpu related crashes.

  Otherwise it's just a bunch of i915, and amdgpu fixes.

  legacy:
   - fix drm_local_map.offset type

  ttm:
   - temporarily disable hugepages to debug amdgpu problems.

  prime:
   - fix sg extraction

  amdgpu:
   - Various Renoir fixes
   - Fix gfx clockgating sequence on gfx10
   - RAS fixes
   - Avoid MST property creation after registration
   - Various cursor/viewport fixes
   - Fix a confusing log message about optional firmwares

  i915:
   - Flush all the reloc_gpu batch (Chris)
   - Ignore readonly failures when updating relocs (Chris)
   - Fill all the unused space in the GGTT (Chris)
   - Return the right vswing table (Jose)
   - Don't enable DDI IO power on a TypeC port in TBT mode for ICL+ (Imre)

  analogix_dp:
   - probe fix

  virtio:
   - oob fix in object create"

* tag 'drm-next-2020-04-10' of git://anongit.freedesktop.org/drm/drm: (34 commits)
  drm/ttm: Temporarily disable the huge_fault() callback
  drm/bridge: analogix_dp: Split bind() into probe() and real bind()
  drm/legacy: Fix type for drm_local_map.offset
  drm/amdgpu/display: fix warning when compiling without debugfs
  drm/amdgpu: unify fw_write_wait for new gfx9 asics
  drm/amd/powerplay: error out on forcing clock setting not supported
  drm/amdgpu: fix gfx hang during suspend with video playback (v2)
  drm/amd/display: Check for null fclk voltage when parsing clock table
  drm/amd/display: Acknowledge wm_optimized_required
  drm/amd/display: Make cursor source translation adjustment optional
  drm/amd/display: Calculate scaling ratios on every medium/full update
  drm/amd/display: Program viewport when source pos changes for DCN20 hw seq
  drm/amd/display: Fix incorrect cursor pos on scaled primary plane
  drm/amd/display: change default pipe_split policy for DCN1
  drm/amd/display: Translate cursor position by source rect
  drm/amd/display: Update stream adjust in dc_stream_adjust_vmin_vmax
  drm/amd/display: Avoid create MST prop after registration
  drm/amdgpu/psp: dont warn on missing optional TA's
  drm/amdgpu: update RAS related dmesg print
  drm/amdgpu: resolve mGPU RAS query instability
  ...
2020-04-10 12:38:28 -07:00
Linus Torvalds 4aafdf6883 sound fixes for 5.7-rc1
A collection of small fixes gathered since the previous update.
 
 * ALSA core:
 - Regression fix for OSS PCM emulation
 
 * ASoC:
 - Trivial fixes in reg bit mask ops, DAPM, DPCM and topology
 - Lots of fixes for Intel-based devices
 - Minor fixes for AMD, STM32, Qualcomm, Realtek
 
 * Others
 - Fixes for the bugs in mixer handling in HD-audio and ice1724
   drivers that were caught by the recent kctl validator
 - New quirks for HD-audio and USB-audio
 
 Also this contains a fix for EDD firmware fix, which slipped
 from anyone's hands.
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Merge tag 'sound-fix-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes gathered since the previous update.

  ALSA core:
   - Regression fix for OSS PCM emulation

  ASoC:
   - Trivial fixes in reg bit mask ops, DAPM, DPCM and topology
   - Lots of fixes for Intel-based devices
   - Minor fixes for AMD, STM32, Qualcomm, Realtek

  Others:
   - Fixes for the bugs in mixer handling in HD-audio and ice1724
     drivers that were caught by the recent kctl validator
   - New quirks for HD-audio and USB-audio

  Also this contains a fix for EDD firmware fix, which slipped from
  anyone's hands"

* tag 'sound-fix-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (35 commits)
  ALSA: hda: Add driver blacklist
  ALSA: usb-audio: Add mixer workaround for TRX40 and co
  ALSA: hda/realtek - Add quirk for MSI GL63
  ALSA: ice1724: Fix invalid access for enumerated ctl items
  ALSA: hda: Fix potential access overflow in beep helper
  ASoC: cs4270: pull reset GPIO low then high
  ALSA: hda/realtek - Add HP new mute led supported for ALC236
  ALSA: hda/realtek - Add supported new mute Led for HP
  ASoC: rt5645: Add platform-data for Medion E1239T
  ASoC: Intel: bytcr_rt5640: Add quirk for MPMAN MPWIN895CL tablet
  ASoC: stm32: sai: Add missing cleanup
  ALSA: usb-audio: Add registration quirk for Kingston HyperX Cloud Alpha S
  ASoC: Intel: atom: Fix uninitialized variable compiler warning
  ASoC: Intel: atom: Check drv->lock is locked in sst_fill_and_send_cmd_unlocked
  ASoC: Intel: atom: Take the drv->lock mutex before calling sst_send_slot_map()
  ASoC: SOF: Turn "firmware boot complete" message into a dbg message
  ALSA: usb-audio: Add Pioneer DJ DJM-250MK2 quirk
  ALSA: pcm: oss: Fix regression by buffer overflow fix (again)
  ALSA: pcm: oss: Fix regression by buffer overflow fix
  edd: Use scnprintf() for avoiding potential buffer overflow
  ...
2020-04-10 12:27:06 -07:00
Linus Torvalds 93f3321f65 SCSI misc on 20200410
This is a batch of changes that didn't make it in the initial pull
 request because the lpfc series had to be rebased to redo an incorrect
 split.  It's basically driver updates to lpfc, target, bnx2fc and ufs
 with the rest being minor updates except the sr_block_release one
 which fixes a use after free introduced by the removal of the global
 mutex in the first patch set.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "This is a batch of changes that didn't make it in the initial pull
  request because the lpfc series had to be rebased to redo an incorrect
  split.

  It's basically driver updates to lpfc, target, bnx2fc and ufs with the
  rest being minor updates except the sr_block_release one which fixes a
  use after free introduced by the removal of the global mutex in the
  first patch set"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (35 commits)
  scsi: core: Add DID_ALLOC_FAILURE and DID_MEDIUM_ERROR to hostbyte_table
  scsi: ufs: Use ufshcd_config_pwr_mode() when scaling gear
  scsi: bnx2fc: fix boolreturn.cocci warnings
  scsi: zfcp: use fallthrough;
  scsi: aacraid: do not overwrite retval in aac_reset_adapter()
  scsi: sr: Fix sr_block_release()
  scsi: aic7xxx: Remove more FreeBSD-specific code
  scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug
  scsi: ufs: set device as active power mode after resetting device
  scsi: iscsi: Report unbind session event when the target has been removed
  scsi: lpfc: Change default SCSI LUN QD to 64
  scsi: libfc: rport state move to PLOGI if all PRLI retry exhausted
  scsi: libfc: If PRLI rejected, move rport to PLOGI state
  scsi: bnx2fc: Update the driver version to 2.12.13
  scsi: bnx2fc: Fix SCSI command completion after cleanup is posted
  scsi: bnx2fc: Process the RQE with CQE in interrupt context
  scsi: target: use the stack for XCOPY passthrough cmds
  scsi: target: increase XCOPY I/O size
  scsi: target: avoid per-loop XCOPY buffer allocations
  scsi: target: drop xcopy DISK BLOCK LENGTH debug
  ...
2020-04-10 12:21:11 -07:00
Steve French 4e8aea30f7 smb3: enable swap on SMB3 mounts
Add experimental support for allowing a swap file to be on an SMB3
mount.  There are use cases where swapping over a secure network
filesystem is preferable. In some cases there are no local
block devices large enough, and network block devices can be
hard to setup and secure.  And in some cases there are no
local block devices at all (e.g. with the recent addition of
remote boot over SMB3 mounts).

There are various enhancements that can be added later e.g.:
- doing a mandatory byte range lock over the swapfile (until
the Linux VFS is modified to notify the file system that an open
is for a swapfile, when the file can be opened "DENY_ALL" to prevent
others from opening it).
- pinning more buffers in the underlying transport to minimize memory
allocations in the TCP stack under the fs
- documenting how to create ACLs (on the server) to secure the
swapfile (or adding additional tools to cifs-utils to make it easier)

Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2020-04-10 13:32:32 -05:00
Ley Foon Tan 0ec8a5054d MAINTAINERS: Remove nios2-dev@lists.rocketboards.org
nios2-dev@lists.rocketboards.org mailing list is no longer supported,
remove it from MAINTAINERS file.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2020-04-11 01:46:18 +08:00
Alexandru Ardelean d00935affc arch: nios2: remove 'resetvalue' property
The 'altr,pio-1.0' driver does not handle the 'resetvalue', so remove it.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2020-04-11 01:46:04 +08:00
Alexandru Ardelean 6dd5d3b8ad arch: nios2: rename 'altr,gpio-bank-width' -> 'altr,ngpio'
There is no more 'altr,gpio-bank-width' in the 'altr,pio-1.0' driver.
There is a 'altr,ngpio' which is  what the property wants to configure.

This change updates all occurrences of 'altr,gpio-bank-width' to
'altr,ngpio'.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2020-04-11 01:45:52 +08:00
Dragos Bogdan f26e433185 arch: nios2: Enable the common clk subsystem on Nios2
This patch adds support for common clock framework on Nios2. Clock
framework is commonly used in many drivers, and this patch makes it
available for the entire architecture, not just on a per-driver basis.

Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Signed-off-by: Dragos Bogdan <dragos.bogdan@analog.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2020-04-11 01:45:28 +08:00
Linus Torvalds f8693b3eb5 libata-5.7-2020-04-09
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Merge tag 'libata-5.7-2020-04-09' of git://git.kernel.dk/linux-block

Pull libata fixes from Jens Axboe:
 "A few followup changes/fixes for libata:

   - PMP removal fix (Kai-Heng)

   - Add remapped NVMe device attribute to sysfs (Kai-Heng)

   - Remove redundant assignment (Colin)

   - Add yet another Comet Lake ID (Jian-Hong)"

* tag 'libata-5.7-2020-04-09' of git://git.kernel.dk/linux-block:
  ahci: Add Intel Comet Lake PCH RAID PCI ID
  ata: ahci: Add sysfs attribute to show remapped NVMe device count
  ata: ahci-imx: remove redundant assignment to ret
  libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set
2020-04-10 10:26:28 -07:00
Linus Torvalds 8df2a0a6da block-5.7-2020-04-10
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Merge tag 'block-5.7-2020-04-10' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Here's a set of fixes that should go into this merge window. This
  contains:

   - NVMe pull request from Christoph with various fixes

   - Better discard support for loop (Evan)

   - Only call ->commit_rqs() if we have queued IO (Keith)

   - blkcg offlining fixes (Tejun)

   - fix (and fix the fix) for busy partitions"

* tag 'block-5.7-2020-04-10' of git://git.kernel.dk/linux-block:
  block: fix busy device checking in blk_drop_partitions again
  block: fix busy device checking in blk_drop_partitions
  nvmet-rdma: fix double free of rdma queue
  blk-mq: don't commit_rqs() if none were queued
  nvme-fc: Revert "add module to ops template to allow module references"
  nvme: fix deadlock caused by ANA update wrong locking
  nvmet-rdma: fix bonding failover possible NULL deref
  loop: Better discard support for block devices
  loop: Report EOPNOTSUPP properly
  nvmet: fix NULL dereference when removing a referral
  nvme: inherit stable pages constraint in the mpath stack device
  blkcg: don't offline parent blkcg first
  blkcg: rename blkcg->cgwb_refcnt to ->online_pin and always use it
  nvme-tcp: fix possible crash in recv error flow
  nvme-tcp: don't poll a non-live queue
  nvme-tcp: fix possible crash in write_zeroes processing
  nvmet-fc: fix typo in comment
  nvme-rdma: Replace comma with a semicolon
  nvme-fcloop: fix deallocation of working context
  nvme: fix compat address handling in several ioctls
2020-04-10 10:06:54 -07:00
Linus Torvalds 172edde960 io_uring-5.7-2020-04-09
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Merge tag 'io_uring-5.7-2020-04-09' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Here's a set of fixes that either weren't quite ready for the first,
  or came about from some intensive testing on memcached with 350K+
  sockets.

  Summary:

   - Fixes for races or deadlocks around poll handling

   - Don't double account fixed files against RLIMIT_NOFILE

   - IORING_OP_OPENAT LFS fix

   - Poll retry handling (Bijan)

   - Missing finish_wait() for SQPOLL (Hillf)

   - Cleanup/split of io_kiocb alloc vs ctx references (Pavel)

   - Fixed file unregistration and init fixes (Xiaoguang)

   - Various little fixes (Xiaoguang, Pavel, Colin)"

* tag 'io_uring-5.7-2020-04-09' of git://git.kernel.dk/linux-block:
  io_uring: punt final io_ring_ctx wait-and-free to workqueue
  io_uring: fix fs cleanup on cqe overflow
  io_uring: don't read user-shared sqe flags twice
  io_uring: remove req init from io_get_req()
  io_uring: alloc req only after getting sqe
  io_uring: simplify io_get_sqring
  io_uring: do not always copy iovec in io_req_map_rw()
  io_uring: ensure openat sets O_LARGEFILE if needed
  io_uring: initialize fixed_file_data lock
  io_uring: remove redundant variable pointer nxt and io_wq_assign_next call
  io_uring: fix ctx refcounting in io_submit_sqes()
  io_uring: process requests completed with -EAGAIN on poll list
  io_uring: remove bogus RLIMIT_NOFILE check in file registration
  io_uring: use io-wq manager as backup task if task is exiting
  io_uring: grab task reference for poll requests
  io_uring: retry poll if we got woken with non-matching mask
  io_uring: add missing finish_wait() in io_sq_thread()
  io_uring: refactor file register/unregister/update handling
2020-04-10 10:02:21 -07:00
Linus Torvalds 8c3c07439e (More) new code for 5.7:
- Validate the realtime geometry in the superblock when mounting
 - Refactor a bunch of tricky flag handling in the log code
 - Flush the CIL more judiciously so that we don't wait until there are
   millions of log items consuming a lot of memory.
 - Throttle transaction commits to prevent the xfs frontend from flooding
   the CIL with too many log items.
 - Account metadata buffers correctly for memory reclaim.
 - Mark slabs properly for memory reclaim.  These should help reclaim run
   more effectively when XFS is using a lot of memory.
 - Don't write a garbage log record at unmount time if we're trying to
   trigger summary counter recalculation at next mount.
 - Don't block the AIL on locked dquot/inode buffers; instead trigger its
   backoff mechanism to give the lock holder a chance to finish up.
 - Ratelimit writeback flushing when buffered writes encounter ENOSPC.
 - Other minor cleanups.
 - Make reflink a synchronous operation when the fs is mounted with wsync
   or sync, which means that now we force the log to disk to record the
   changes.
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Merge tag 'xfs-5.7-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull more xfs updates from Darrick Wong:
 "As promised last week, this batch changes how xfs interacts with
  memory reclaim; how the log batches and throttles log items; how hard
  writes near ENOSPC will try to squeeze more space out of the
  filesystem; and hopefully fix the last of the umount hangs after a
  catastrophic failure.

  Summary:

   - Validate the realtime geometry in the superblock when mounting

   - Refactor a bunch of tricky flag handling in the log code

   - Flush the CIL more judiciously so that we don't wait until there
     are millions of log items consuming a lot of memory.

   - Throttle transaction commits to prevent the xfs frontend from
     flooding the CIL with too many log items.

   - Account metadata buffers correctly for memory reclaim.

   - Mark slabs properly for memory reclaim. These should help reclaim
     run more effectively when XFS is using a lot of memory.

   - Don't write a garbage log record at unmount time if we're trying to
     trigger summary counter recalculation at next mount.

   - Don't block the AIL on locked dquot/inode buffers; instead trigger
     its backoff mechanism to give the lock holder a chance to finish
     up.

   - Ratelimit writeback flushing when buffered writes encounter ENOSPC.

   - Other minor cleanups.

   - Make reflink a synchronous operation when the fs is mounted with
     wsync or sync, which means that now we force the log to disk to
     record the changes"

* tag 'xfs-5.7-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (26 commits)
  xfs: reflink should force the log out if mounted with wsync
  xfs: factor out a new xfs_log_force_inode helper
  xfs: fix inode number overflow in ifree cluster helper
  xfs: remove redundant variable assignment in xfs_symlink()
  xfs: ratelimit inode flush on buffered write ENOSPC
  xfs: return locked status of inode buffer on xfsaild push
  xfs: trylock underlying buffer on dquot flush
  xfs: remove unnecessary ternary from xfs_create
  xfs: don't write a corrupt unmount record to force summary counter recalc
  xfs: factor inode lookup from xfs_ifree_cluster
  xfs: tail updates only need to occur when LSN changes
  xfs: factor common AIL item deletion code
  xfs: correctly acount for reclaimable slabs
  xfs: Improve metadata buffer reclaim accountability
  xfs: don't allow log IO to be throttled
  xfs: Throttle commits on delayed background CIL push
  xfs: Lower CIL flush limit for large logs
  xfs: remove some stale comments from the log code
  xfs: refactor unmount record writing
  xfs: merge xlog_commit_record with xlog_write_done
  ...
2020-04-10 09:54:26 -07:00
Linus Torvalds d3e5e977ab More ACPI updates for 5.7-rc1
Prevent a false-positive static checker warning from triggering
 in the ACPI EC driver (Rafael Wysocki), fix white space in an
 ACPI document (Vilhelm Prytz) and add static annotation to one
 variable (Jason Yan).
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Merge tag 'acpi-5.7-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI updates from Rafael Wysocki:
 "These prevent a false-positive static checker warning from triggering
  in the ACPI EC driver (Rafael Wysocki), fix white space in an ACPI
  document (Vilhelm Prytz) and add static annotation to one variable
  (Jason Yan)"

* tag 'acpi-5.7-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI, x86/boot: make acpi_nobgrt static
  Documentation: firmware-guide: ACPI: fix table alignment in namespace.rst
  ACPI: EC: Fix up fast path check in acpi_ec_add()
2020-04-10 09:52:15 -07:00
Linus Torvalds bbec2a2dc3 More power management updates for 5.7-rc1
Rework compat ioctl handling in the user space hibernation
 interface (Christoph Hellwig) and fix a typo in a function
 name in the cpuidle haltpoll driver (Yihao Wu).
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Merge tag 'pm-5.7-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "Rework compat ioctl handling in the user space hibernation interface
  (Christoph Hellwig) and fix a typo in a function name in the cpuidle
  haltpoll driver (Yihao Wu)"

* tag 'pm-5.7-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpuidle-haltpoll: Fix small typo
  PM / sleep: handle the compat case in snapshot_set_swap_area()
  PM / sleep: move SNAPSHOT_SET_SWAP_AREA handling into a helper
2020-04-10 09:50:00 -07:00
Linus Torvalds 523a05fc68 s390 updates for the 5.7 merge window #2
- The rest of fallthrough; annotations conversion.
 
 - Couple of fixes for ADD uevents in the common I/O layer.
 
 - Minor refactoring of the queued direct I/O code.
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Merge tag 's390-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Vasily Gorbik:
 "Second round of s390 fixes and features for 5.7:

   - The rest of fallthrough; annotations conversion

   - Couple of fixes for ADD uevents in the common I/O layer

   - Minor refactoring of the queued direct I/O code"

* tag 's390-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cio: generate delayed uevent for vfio-ccw subchannels
  s390/cio: avoid duplicated 'ADD' uevents
  s390/qdio: clear DSCI early for polling drivers
  s390/qdio: inline shared_ind()
  s390/qdio: remove cdev from init_data
  s390/qdio: allow for non-contiguous SBAL array in init_data
  zfcp: inline zfcp_qdio_setup_init_data()
  s390/qdio: cleanly split alloc and establish
  s390/mm: use fallthrough;
2020-04-10 09:47:26 -07:00
Randy Dunlap befacdcf47 Documentation: android: binderfs: add 'stats' mount option
Add documentation of the binderfs 'stats' mount option.

Description taken from the commit message.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/baa0aa81-007d-af46-16a5-91fead0bd1b9@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-04-10 10:14:53 -06:00
Christoph Hellwig cb6b771b05 block: fix busy device checking in blk_drop_partitions again
The previous fix had an off by one in the bd_openers checking, counting
the callers blkdev_get.

Fixes: d3ef553627 ("block: fix busy device checking in blk_drop_partitions")
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Qian Cai <cai@lca.pw>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-10 08:34:11 -06:00
Rafael J. Wysocki a31434bcd4 Merge branch 'pm-cpuidle'
* pm-cpuidle:
  cpuidle-haltpoll: Fix small typo
2020-04-10 11:32:22 +02:00
Rafael J. Wysocki 0214da7cce Merge branches 'acpi-ec' and 'acpi-x86'
* acpi-ec:
  ACPI: EC: Fix up fast path check in acpi_ec_add()

* acpi-x86:
  ACPI, x86/boot: make acpi_nobgrt static
2020-04-10 11:31:43 +02:00
Jens Axboe 85faa7b834 io_uring: punt final io_ring_ctx wait-and-free to workqueue
We can't reliably wait in io_ring_ctx_wait_and_kill(), since the
task_works list isn't ordered (in fact it's LIFO ordered). We could
either fix this with a separate task_works list for io_uring work, or
just punt the wait-and-free to async context. This ensures that
task_work that comes in while we're shutting down is processed
correctly. If we don't go async, we could have work past the fput()
work for the ring that depends on work that won't be executed until
after we're done with the wait-and-free. But as this operation is
blocking, it'll never get a chance to run.

This was reproduced with hundreds of thousands of sockets running
memcached, haven't been able to reproduce this synthetically.

Reported-by: Dan Melnic <dmm@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-04-09 18:45:27 -06:00
Dave Airlie 74bd4f0c92 Merge tag 'amd-drm-fixes-5.7-2020-04-08' of git://people.freedesktop.org/~agd5f/linux into drm-next
amd-drm-fixes-5.7-2020-04-08:

amdgpu:
- Various Renoir fixes
- Fix gfx clockgating sequence on gfx10
- RAS fixes
- Avoid MST property creation after registration
- Various cursor/viewport fixes
- Fix a confusing log message about optional firmwares

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408222240.3942-1-alexander.deucher@amd.com
2020-04-10 06:42:53 +10:00
Dave Airlie 1287c880ba - Flush all the reloc_gpu batch (Chris)
- Ignore readonly failures when updating relocs (Chris)
 - Fill all the unused space in the GGTT (Chris)
 - Return the right vswing table (Jose)
 - Don't enable DDI IO power on a TypeC port in TBT mode for ICL+ (Imre)
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Merge tag 'drm-intel-next-fixes-2020-04-08' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

- Flush all the reloc_gpu batch (Chris)
- Ignore readonly failures when updating relocs (Chris)
- Fill all the unused space in the GGTT (Chris)
- Return the right vswing table (Jose)
- Don't enable DDI IO power on a TypeC port in TBT mode for ICL+ (Imre)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408215952.GA1623934@intel.com
2020-04-10 06:42:24 +10:00
Thomas Hellstrom (VMware) c445c1668d drm/ttm: Temporarily disable the huge_fault() callback
With amdgpu and CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y, there are
errors like:
BUG: non-zero pgtables_bytes on freeing mm
and:
BUG: Bad rss-counter state
with TTM transparent huge-pages.
Until we've figured out what other TTM drivers do differently compared to
vmwgfx, disable the huge_fault() callback, eliminating transhuge
page-table entries.

Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Thomas Hellstrom (VMware) <thomas_os@shipmail.org>
Reported-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
Tested-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200409164925.11912-1-thomas_os@shipmail.org
2020-04-10 06:38:23 +10:00
Dave Airlie cb6d406641 A few DMA-related fixes, an OOB fix for virtio and a probe-related fix for
analogix_dp
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Merge tag 'drm-misc-next-fixes-2020-04-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

A few DMA-related fixes, an OOB fix for virtio and a probe-related fix for
analogix_dp

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200409091424.cfpqqbqjxtkgnfme@gilmour.lan
2020-04-10 06:36:48 +10:00
Linus Torvalds c0cc271173 Modules updates for v5.7
Summary of modules changes for the 5.7 merge window:
 
 - Trivial zero-length array to flexible-array cleanup
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:
 "Only a small cleanup this time around: a trivial conversion of
  zero-length arrays to flexible arrays"

* tag 'modules-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  kernel: module: Replace zero-length array with flexible-array member
2020-04-09 12:52:34 -07:00
Steve French 1dc94b7381 smb3: change noisy error message to FYI
The noisy posix error message in readdir was supposed
to be an FYI (not enabled by default)
  CIFS VFS: XXX dev 66306, reparse 0, mode 755

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
2020-04-09 13:28:24 -05:00
Linus Torvalds 87ebc45d2d arm64 fixes:
- Ensure that the compiler and linker versions are aligned so that ld
   doesn't complain about not understanding a .note.gnu.property section
   (emitted when pointer authentication is enabled).
 
 - Force -mbranch-protection=none when the feature is not enabled, in
   case a compiler may choose a different default value.
 
 - Remove CONFIG_DEBUG_ALIGN_RODATA. It was never in defconfig and rarely
   enabled.
 
 - Fix checking 16-bit Thumb-2 instructions checking mask in the
   emulation of the SETEND instruction (it could match the bottom half of
   a 32-bit Thumb-2 instruction).
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Ensure that the compiler and linker versions are aligned so that ld
   doesn't complain about not understanding a .note.gnu.property section
   (emitted when pointer authentication is enabled).

 - Force -mbranch-protection=none when the feature is not enabled, in
   case a compiler may choose a different default value.

 - Remove CONFIG_DEBUG_ALIGN_RODATA. It was never in defconfig and
   rarely enabled.

 - Fix checking 16-bit Thumb-2 instructions checking mask in the
   emulation of the SETEND instruction (it could match the bottom half
   of a 32-bit Thumb-2 instruction).

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: armv8_deprecated: Fix undef_hook mask for thumb setend
  arm64: remove CONFIG_DEBUG_ALIGN_RODATA feature
  arm64: Always force a branch protection mode when the compiler has one
  arm64: Kconfig: ptrauth: Add binutils version check to fix mismatch
  init/kconfig: Add LD_VERSION Kconfig
2020-04-09 11:04:16 -07:00
Linus Torvalds e4da01d833 powerpc updates for 5.7 #2
- A fix for a crash in machine check handling on pseries (ie. guests)
 
  - A small series to make it possible to disable CONFIG_COMPAT, and turn it off
    by default for ppc64le where it's not used.
 
  - A few other miscellaneous fixes and small improvements.
 
 Thanks to:
   Alexey Kardashevskiy, Anju T Sudhakar, Arnd Bergmann, Christophe Leroy, Dan
   Carpenter, Ganesh Goudar, Geert Uytterhoeven, Geoff Levand, Mahesh Salgaonkar,
   Markus Elfring, Michal Suchanek, Nicholas Piggin, Stephen Boyd, Wen Xiong.
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Merge tag 'powerpc-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc updates from Michael Ellerman:
 "The bulk of this is the series to make CONFIG_COMPAT user-selectable,
  it's been around for a long time but was blocked behind the
  syscall-in-C series.

  Plus there's also a few fixes and other minor things.

  Summary:

   - A fix for a crash in machine check handling on pseries (ie. guests)

   - A small series to make it possible to disable CONFIG_COMPAT, and
     turn it off by default for ppc64le where it's not used.

   - A few other miscellaneous fixes and small improvements.

  Thanks to: Alexey Kardashevskiy, Anju T Sudhakar, Arnd Bergmann,
  Christophe Leroy, Dan Carpenter, Ganesh Goudar, Geert Uytterhoeven,
  Geoff Levand, Mahesh Salgaonkar, Markus Elfring, Michal Suchanek,
  Nicholas Piggin, Stephen Boyd, Wen Xiong"

* tag 'powerpc-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  selftests/powerpc: Always build the tm-poison test 64-bit
  powerpc: Improve ppc_save_regs()
  Revert "powerpc/64: irq_work avoid interrupt when called with hardware irqs enabled"
  powerpc/time: Replace <linux/clk-provider.h> by <linux/of_clk.h>
  powerpc/pseries/ddw: Extend upper limit for huge DMA window for persistent memory
  powerpc/perf: split callchain.c by bitness
  powerpc/64: Make COMPAT user-selectable disabled on littleendian by default.
  powerpc/64: make buildable without CONFIG_COMPAT
  powerpc/perf: consolidate valid_user_sp -> invalid_user_sp
  powerpc/perf: consolidate read_user_stack_32
  powerpc: move common register copy functions from signal_32.c to signal.c
  powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro
  powerpc/ps3: Set CONFIG_UEVENT_HELPER=y in ps3_defconfig
  powerpc/ps3: Remove an unneeded NULL check
  powerpc/ps3: Remove duplicate error message
  powerpc/powernv: Re-enable imc trace-mode in kernel
  powerpc/perf: Implement a global lock to avoid races between trace, core and thread imc events.
  powerpc/pseries: Fix MCE handling on pseries
  selftests/eeh: Skip ahci adapters
  powerpc/64s: Fix doorbell wakeup msgclr optimisation
2020-04-09 11:01:42 -07:00
Linus Torvalds 6cff4821c0 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu update from Greg Ungerer:
 "Only a single commit, to remove all use of the obsolete setup_irq()
  calls within the m68knommu architecture code"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: Replace setup_irq() by request_irq()
2020-04-09 10:59:56 -07:00
Linus Torvalds eab4002660 RISC-V Patches for the 5.7 Merge Window, Part 1
This tag contains the patches I'd like to target for 5.7.  It has a handful of
 new features:
 
 * Partial support for the Kendryte K210.  There are still a few outstanding
   issues that I have patches for, but I don't actually have a board to test
   them so they're not included yet.
 * SBI v0.2 support.
 * Fixes to support for building with LLVM-based toolchains.  The resulting
   images are known not to boot yet.
 
 This builds and boots for me.  There is one merge conflict, it's just a Kconfig
 merge issue.  I can publish a resolved branch if you'd like.
 
 I don't anticipate a part two, but I'll probably have something early in the
 RCs to finish up the K210 support.
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Merge tag 'riscv-for-linus-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:
 "This contains a handful of new features:

   - Partial support for the Kendryte K210.

     There are still a few outstanding issues that I have patches for,
     but I don't actually have a board to test them so they're not
     included yet.

   - SBI v0.2 support.

   - Fixes to support for building with LLVM-based toolchains. The
     resulting images are known not to boot yet.

  I don't anticipate a part two, but I'll probably have something early
  in the RCs to finish up the K210 support"

* tag 'riscv-for-linus-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (38 commits)
  riscv: create a loader.bin boot image for Kendryte SoC
  riscv: Kendryte K210 default config
  riscv: Add Kendryte K210 device tree
  riscv: Select required drivers for Kendryte SOC
  riscv: Add Kendryte K210 SoC support
  riscv: Add SOC early init support
  riscv: Unaligned load/store handling for M_MODE
  RISC-V: Support cpu hotplug
  RISC-V: Add supported for ordered booting method using HSM
  RISC-V: Add SBI HSM extension definitions
  RISC-V: Export SBI error to linux error mapping function
  RISC-V: Add cpu_ops and modify default booting method
  RISC-V: Move relocate and few other functions out of __init
  RISC-V: Implement new SBI v0.2 extensions
  RISC-V: Introduce a new config for SBI v0.1
  RISC-V: Add SBI v0.2 extension definitions
  RISC-V: Add basic support for SBI v0.2
  RISC-V: Mark existing SBI as 0.1 SBI.
  riscv: Use macro definition instead of magic number
  riscv: Add support to dump the kernel page tables
  ...
2020-04-09 10:51:30 -07:00