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Merge branch 'akpm' (patches from Andrew) 

Merge first patchbomb from Andrew Morton:

 - arch/sh updates

 - ocfs2 updates

 - kernel/watchdog feature

 - about half of mm/

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (122 commits)
  Documentation: update arch list in the 'memtest' entry
  Kconfig: memtest: update number of test patterns up to 17
  arm: add support for memtest
  arm64: add support for memtest
  memtest: use phys_addr_t for physical addresses
  mm: move memtest under mm
  mm, hugetlb: abort __get_user_pages if current has been oom killed
  mm, mempool: do not allow atomic resizing
  memcg: print cgroup information when system panics due to panic_on_oom
  mm: numa: remove migrate_ratelimited
  mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE
  mm: split ET_DYN ASLR from mmap ASLR
  s390: redefine randomize_et_dyn for ELF_ET_DYN_BASE
  mm: expose arch_mmap_rnd when available
  s390: standardize mmap_rnd() usage
  powerpc: standardize mmap_rnd() usage
  mips: extract logic for mmap_rnd()
  arm64: standardize mmap_rnd() usage
  x86: standardize mmap_rnd() usage
  arm: factor out mmap ASLR into mmap_rnd
  ...
This commit is contained in:
Linus Torvalds 2015-04-14 16:49:17 -07:00
parent 80dcc31fbe e4b0db72be
commit 1dcf58d6e6
153 changed files with 2322 additions and 1429 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
Documentation/cma/debugfs.txt Normal file
View File

@ -0,0 +1,21 @@
The CMA debugfs interface is useful to retrieve basic information out of the
different CMA areas and to test allocation/release in each of the areas.
Each CMA zone represents a directory under <debugfs>/cma/, indexed by the
kernel's CMA index. So the first CMA zone would be:
<debugfs>/cma/cma-0
The structure of the files created under that directory is as follows:
- [RO] base_pfn: The base PFN (Page Frame Number) of the zone.
- [RO] count: Amount of memory in the CMA area.
- [RO] order_per_bit: Order of pages represented by one bit.
- [RO] bitmap: The bitmap of page states in the zone.
- [WO] alloc: Allocate N pages from that CMA area. For example:
echo 5 > <debugfs>/cma/cma-2/alloc
would try to allocate 5 pages from the cma-2 area.
- [WO] free: Free N pages from that CMA area, similar to the above.

10
Documentation/kernel-parameters.txt
View File

@ -1989,7 +1989,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
seconds. Use this parameter to check at some
other rate. 0 disables periodic checking.
memtest= [KNL,X86] Enable memtest
memtest= [KNL,X86,ARM] Enable memtest
Format: <integer>
default : 0 <disable>
Specifies the number of memtest passes to be
@ -2236,8 +2236,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
nmi_watchdog= [KNL,BUGS=X86] Debugging features for SMP kernels
Format: [panic,][nopanic,][num]
Valid num: 0
Valid num: 0 or 1
0 - turn nmi_watchdog off
1 - turn nmi_watchdog on
When panic is specified, panic when an NMI watchdog
timeout occurs (or 'nopanic' to override the opposite
default).
@ -2322,6 +2323,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
register save and restore. The kernel will only save
legacy floating-point registers on task switch.
nohugeiomap [KNL,x86] Disable kernel huge I/O mappings.
noxsave [BUGS=X86] Disables x86 extended register state save
and restore using xsave. The kernel will fallback to
enabling legacy floating-point and sse state.
@ -2464,7 +2467,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
nousb [USB] Disable the USB subsystem
nowatchdog [KNL] Disable the lockup detector (NMI watchdog).
nowatchdog [KNL] Disable both lockup detectors, i.e.
soft-lockup and NMI watchdog (hard-lockup).
nowb [ARM]

62
Documentation/sysctl/kernel.txt
View File

@ -77,12 +77,14 @@ show up in /proc/sys/kernel:
- shmmax [ sysv ipc ]
- shmmni
- softlockup_all_cpu_backtrace
- soft_watchdog
- stop-a [ SPARC only ]
- sysrq ==> Documentation/sysrq.txt
- sysctl_writes_strict
- tainted
- threads-max
- unknown_nmi_panic
- watchdog
- watchdog_thresh
- version
@ -417,16 +419,23 @@ successful IPC object allocation.
nmi_watchdog:
Enables/Disables the NMI watchdog on x86 systems. When the value is
non-zero the NMI watchdog is enabled and will continuously test all
online cpus to determine whether or not they are still functioning
properly. Currently, passing "nmi_watchdog=" parameter at boot time is
required for this function to work.
This parameter can be used to control the NMI watchdog
(i.e. the hard lockup detector) on x86 systems.
If LAPIC NMI watchdog method is in use (nmi_watchdog=2 kernel
parameter), the NMI watchdog shares registers with oprofile. By
disabling the NMI watchdog, oprofile may have more registers to
utilize.
0 - disable the hard lockup detector
1 - enable the hard lockup detector
The hard lockup detector monitors each CPU for its ability to respond to
timer interrupts. The mechanism utilizes CPU performance counter registers
that are programmed to generate Non-Maskable Interrupts (NMIs) periodically
while a CPU is busy. Hence, the alternative name 'NMI watchdog'.
The NMI watchdog is disabled by default if the kernel is running as a guest
in a KVM virtual machine. This default can be overridden by adding
nmi_watchdog=1
to the guest kernel command line (see Documentation/kernel-parameters.txt).
==============================================================
@ -816,6 +825,22 @@ NMI.
==============================================================
soft_watchdog
This parameter can be used to control the soft lockup detector.
0 - disable the soft lockup detector
1 - enable the soft lockup detector
The soft lockup detector monitors CPUs for threads that are hogging the CPUs
without rescheduling voluntarily, and thus prevent the 'watchdog/N' threads
from running. The mechanism depends on the CPUs ability to respond to timer
interrupts which are needed for the 'watchdog/N' threads to be woken up by
the watchdog timer function, otherwise the NMI watchdog - if enabled - can
detect a hard lockup condition.
==============================================================
tainted:
Non-zero if the kernel has been tainted. Numeric values, which
@ -858,6 +883,25 @@ example. If a system hangs up, try pressing the NMI switch.
==============================================================
watchdog:
This parameter can be used to disable or enable the soft lockup detector
_and_ the NMI watchdog (i.e. the hard lockup detector) at the same time.
0 - disable both lockup detectors
1 - enable both lockup detectors
The soft lockup detector and the NMI watchdog can also be disabled or
enabled individually, using the soft_watchdog and nmi_watchdog parameters.
If the watchdog parameter is read, for example by executing
cat /proc/sys/kernel/watchdog
the output of this command (0 or 1) shows the logical OR of soft_watchdog
and nmi_watchdog.
==============================================================
watchdog_thresh:
This value can be used to control the frequency of hrtimer and NMI

4
Documentation/vm/cleancache.txt
View File

@ -28,9 +28,7 @@ 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.
Note that cleancache_register_ops returns the previous settings so that
chaining can be performed if desired. The functions provided must conform to
certain semantics as follows:
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

24
Documentation/vm/unevictable-lru.txt
View File

@ -317,7 +317,7 @@ If the VMA passes some filtering as described in "Filtering Special Vmas"
below, mlock_fixup() will attempt to merge the VMA with its neighbors or split
off a subset of the VMA if the range does not cover the entire VMA. Once the
VMA has been merged or split or neither, mlock_fixup() will call
__mlock_vma_pages_range() to fault in the pages via get_user_pages() and to
populate_vma_page_range() to fault in the pages via get_user_pages() and to
mark the pages as mlocked via mlock_vma_page().
Note that the VMA being mlocked might be mapped with PROT_NONE. In this case,
@ -327,7 +327,7 @@ fault path or in vmscan.
Also note that a page returned by get_user_pages() could be truncated or
migrated out from under us, while we're trying to mlock it. To detect this,
__mlock_vma_pages_range() checks page_mapping() after acquiring the page lock.
populate_vma_page_range() checks page_mapping() after acquiring the page lock.
If the page is still associated with its mapping, we'll go ahead and call
mlock_vma_page(). If the mapping is gone, we just unlock the page and move on.
In the worst case, this will result in a page mapped in a VM_LOCKED VMA
@ -392,7 +392,7 @@ ignored for munlock.
If the VMA is VM_LOCKED, mlock_fixup() again attempts to merge or split off the
specified range. The range is then munlocked via the function
__mlock_vma_pages_range() - the same function used to mlock a VMA range -
populate_vma_page_range() - the same function used to mlock a VMA range -
passing a flag to indicate that munlock() is being performed.
Because the VMA access protections could have been changed to PROT_NONE after
@ -402,7 +402,7 @@ get_user_pages() was enhanced to accept a flag to ignore the permissions when
fetching the pages - all of which should be resident as a result of previous
mlocking.
For munlock(), __mlock_vma_pages_range() unlocks individual pages by calling
For munlock(), populate_vma_page_range() unlocks individual pages by calling
munlock_vma_page(). munlock_vma_page() unconditionally clears the PG_mlocked
flag using TestClearPageMlocked(). As with mlock_vma_page(),
munlock_vma_page() use the Test*PageMlocked() function to handle the case where
@ -463,21 +463,11 @@ populate the page table.
To mlock a range of memory under the unevictable/mlock infrastructure, the
mmap() handler and task address space expansion functions call
mlock_vma_pages_range() specifying the vma and the address range to mlock.
mlock_vma_pages_range() filters VMAs like mlock_fixup(), as described above in
"Filtering Special VMAs". It will clear the VM_LOCKED flag, which will have
already been set by the caller, in filtered VMAs. Thus these VMA's need not be
visited for munlock when the region is unmapped.
populate_vma_page_range() specifying the vma and the address range to mlock.
For "normal" VMAs, mlock_vma_pages_range() calls __mlock_vma_pages_range() to
fault/allocate the pages and mlock them. Again, like mlock_fixup(),
mlock_vma_pages_range() downgrades the mmap semaphore to read mode before
attempting to fault/allocate and mlock the pages and "upgrades" the semaphore
back to write mode before returning.
The callers of mlock_vma_pages_range() will have already added the memory range
The callers of populate_vma_page_range() will have already added the memory range
to be mlocked to the task's "locked_vm". To account for filtered VMAs,
mlock_vma_pages_range() returns the number of pages NOT mlocked. All of the
populate_vma_page_range() returns the number of pages NOT mlocked. All of the
callers then subtract a non-negative return value from the task's locked_vm. A
negative return value represent an error - for example, from get_user_pages()
attempting to fault in a VMA with PROT_NONE access. In this case, we leave the

15
arch/Kconfig
View File

@ -446,6 +446,9 @@ config HAVE_IRQ_TIME_ACCOUNTING
config HAVE_ARCH_TRANSPARENT_HUGEPAGE
bool
config HAVE_ARCH_HUGE_VMAP
bool
config HAVE_ARCH_SOFT_DIRTY
bool
@ -484,6 +487,18 @@ config HAVE_IRQ_EXIT_ON_IRQ_STACK
This spares a stack switch and improves cache usage on softirq
processing.
config PGTABLE_LEVELS
int
default 2
config ARCH_HAS_ELF_RANDOMIZE
bool
help
An architecture supports choosing randomized locations for
stack, mmap, brk, and ET_DYN. Defined functions:
- arch_mmap_rnd()
- arch_randomize_brk()
#
# ABI hall of shame
#

4
arch/alpha/Kconfig
View File

@ -76,6 +76,10 @@ config GENERIC_ISA_DMA
bool
default y
config PGTABLE_LEVELS
int
default 3
source "init/Kconfig"
source "kernel/Kconfig.freezer"

7
arch/arm/Kconfig
View File

@ -1,8 +1,8 @@
config ARM
bool
default y
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAS_GCOV_PROFILE_ALL
@ -286,6 +286,11 @@ config GENERIC_BUG
def_bool y
depends on BUG
config PGTABLE_LEVELS
int
default 3 if ARM_LPAE
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"

4
arch/arm/include/asm/elf.h
View File

@ -125,10 +125,6 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
extern void elf_set_personality(const struct elf32_hdr *);
#define SET_PERSONALITY(ex) elf_set_personality(&(ex))
struct mm_struct;
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
#ifdef CONFIG_MMU
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
struct linux_binprm;

3
arch/arm/mm/init.c
View File

@ -335,6 +335,9 @@ void __init bootmem_init(void)
find_limits(&min, &max_low, &max_high);
early_memtest((phys_addr_t)min << PAGE_SHIFT,
(phys_addr_t)max_low << PAGE_SHIFT);
/*
* Sparsemem tries to allocate bootmem in memory_present(),
* so must be done after the fixed reservations

16
arch/arm/mm/mmap.c
View File

@ -169,14 +169,22 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
return addr;
}
unsigned long arch_mmap_rnd(void)
{
unsigned long rnd;
/* 8 bits of randomness in 20 address space bits */
rnd = (unsigned long)get_random_int() % (1 << 8);
return rnd << PAGE_SHIFT;
}
void arch_pick_mmap_layout(struct mm_struct *mm)
{
unsigned long random_factor = 0UL;
/* 8 bits of randomness in 20 address space bits */
if ((current->flags & PF_RANDOMIZE) &&
!(current->personality & ADDR_NO_RANDOMIZE))
random_factor = (get_random_int() % (1 << 8)) << PAGE_SHIFT;
if (current->flags & PF_RANDOMIZE)
random_factor = arch_mmap_rnd();
if (mmap_is_legacy()) {
mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;

16
arch/arm64/Kconfig
View File

@ -1,7 +1,7 @@
config ARM64
def_bool y
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
@ -143,6 +143,13 @@ config KERNEL_MODE_NEON
config FIX_EARLYCON_MEM
def_bool y
config PGTABLE_LEVELS
int
default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
source "init/Kconfig"
source "kernel/Kconfig.freezer"
@ -413,13 +420,6 @@ config ARM64_VA_BITS
default 42 if ARM64_VA_BITS_42
default 48 if ARM64_VA_BITS_48
config ARM64_PGTABLE_LEVELS
int
default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
config CPU_BIG_ENDIAN
bool "Build big-endian kernel"
help

5
arch/arm64/include/asm/elf.h
View File

@ -125,7 +125,6 @@ typedef struct user_fpsimd_state elf_fpregset_t;
* the loader. We need to make sure that it is out of the way of the program
* that it will "exec", and that there is sufficient room for the brk.
*/
extern unsigned long randomize_et_dyn(unsigned long base);
#define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3)
/*
@ -157,10 +156,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm,
#define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12))
#endif
struct mm_struct;
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
#ifdef CONFIG_COMPAT
#ifdef __AARCH64EB__

4
arch/arm64/include/asm/kvm_mmu.h
View File

@ -163,12 +163,12 @@ static inline bool kvm_s2pmd_readonly(pmd_t *pmd)
/*
* If we are concatenating first level stage-2 page tables, we would have less
* than or equal to 16 pointers in the fake PGD, because that's what the
* architecture allows. In this case, (4 - CONFIG_ARM64_PGTABLE_LEVELS)
* architecture allows. In this case, (4 - CONFIG_PGTABLE_LEVELS)
* represents the first level for the host, and we add 1 to go to the next
* level (which uses contatenation) for the stage-2 tables.
*/
#if PTRS_PER_S2_PGD <= 16
#define KVM_PREALLOC_LEVEL (4 - CONFIG_ARM64_PGTABLE_LEVELS + 1)
#define KVM_PREALLOC_LEVEL (4 - CONFIG_PGTABLE_LEVELS + 1)
#else
#define KVM_PREALLOC_LEVEL (0)
#endif

4
arch/arm64/include/asm/page.h
View File

@ -36,9 +36,9 @@
* for more information).
*/
#ifdef CONFIG_ARM64_64K_PAGES
#define SWAPPER_PGTABLE_LEVELS (CONFIG_ARM64_PGTABLE_LEVELS)
#define SWAPPER_PGTABLE_LEVELS (CONFIG_PGTABLE_LEVELS)
#else
#define SWAPPER_PGTABLE_LEVELS (CONFIG_ARM64_PGTABLE_LEVELS - 1)
#define SWAPPER_PGTABLE_LEVELS (CONFIG_PGTABLE_LEVELS - 1)
#endif
#define SWAPPER_DIR_SIZE (SWAPPER_PGTABLE_LEVELS * PAGE_SIZE)

8
arch/arm64/include/asm/pgalloc.h
View File

@ -28,7 +28,7 @@
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
{
@ -46,9 +46,9 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE));
}
#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 2 */
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
@ -66,7 +66,7 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
set_pgd(pgd, __pgd(__pa(pud) | PUD_TYPE_TABLE));
}
#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 3 */
#endif /* CONFIG_PGTABLE_LEVELS > 3 */
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);

6
arch/arm64/include/asm/pgtable-hwdef.h
View File

@ -21,7 +21,7 @@
/*
* PMD_SHIFT determines the size a level 2 page table entry can map.
*/
#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
#define PMD_SHIFT ((PAGE_SHIFT - 3) * 2 + 3)
#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
@ -31,7 +31,7 @@
/*
* PUD_SHIFT determines the size a level 1 page table entry can map.
*/
#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
#define PUD_SHIFT ((PAGE_SHIFT - 3) * 3 + 3)
#define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
#define PUD_MASK (~(PUD_SIZE-1))
@ -42,7 +42,7 @@
* PGDIR_SHIFT determines the size a top-level page table entry can map
* (depending on the configuration, this level can be 0, 1 or 2).
*/
#define PGDIR_SHIFT ((PAGE_SHIFT - 3) * CONFIG_ARM64_PGTABLE_LEVELS + 3)
#define PGDIR_SHIFT ((PAGE_SHIFT - 3) * CONFIG_PGTABLE_LEVELS + 3)
#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1))
#define PTRS_PER_PGD (1 << (VA_BITS - PGDIR_SHIFT))

12
arch/arm64/include/asm/pgtable-types.h
View File

@ -38,13 +38,13 @@ typedef struct { pteval_t pte; } pte_t;
#define pte_val(x) ((x).pte)
#define __pte(x) ((pte_t) { (x) } )
#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
typedef struct { pmdval_t pmd; } pmd_t;
#define pmd_val(x) ((x).pmd)
#define __pmd(x) ((pmd_t) { (x) } )
#endif
#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
typedef struct { pudval_t pud; } pud_t;
#define pud_val(x) ((x).pud)
#define __pud(x) ((pud_t) { (x) } )
@ -64,13 +64,13 @@ typedef pteval_t pte_t;
#define pte_val(x) (x)
#define __pte(x) (x)
#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
typedef pmdval_t pmd_t;
#define pmd_val(x) (x)
#define __pmd(x) (x)
#endif
#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
typedef pudval_t pud_t;
#define pud_val(x) (x)
#define __pud(x) (x)
@ -86,9 +86,9 @@ typedef pteval_t pgprot_t;
#endif /* STRICT_MM_TYPECHECKS */
#if CONFIG_ARM64_PGTABLE_LEVELS == 2
#if CONFIG_PGTABLE_LEVELS == 2
#include <asm-generic/pgtable-nopmd.h>
#elif CONFIG_ARM64_PGTABLE_LEVELS == 3
#elif CONFIG_PGTABLE_LEVELS == 3
#include <asm-generic/pgtable-nopud.h>
#endif

8
arch/arm64/include/asm/pgtable.h
View File

@ -374,7 +374,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
*/
#define mk_pte(page,prot) pfn_pte(page_to_pfn(page),prot)
#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
#define pmd_ERROR(pmd) __pmd_error(__FILE__, __LINE__, pmd_val(pmd))
@ -409,9 +409,9 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
#define pud_page(pud) pfn_to_page(__phys_to_pfn(pud_val(pud) & PHYS_MASK))
#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 2 */
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
#define pud_ERROR(pud) __pud_error(__FILE__, __LINE__, pud_val(pud))
@ -445,7 +445,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long addr)
#define pgd_page(pgd) pfn_to_page(__phys_to_pfn(pgd_val(pgd) & PHYS_MASK))
#endif /* CONFIG_ARM64_PGTABLE_LEVELS > 3 */
#endif /* CONFIG_PGTABLE_LEVELS > 3 */
#define pgd_ERROR(pgd) __pgd_error(__FILE__, __LINE__, pgd_val(pgd))

4
arch/arm64/include/asm/tlb.h
View File

@ -53,7 +53,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
tlb_remove_entry(tlb, pte);
}
#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
unsigned long addr)
{
@ -62,7 +62,7 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
}
#endif
#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
unsigned long addr)
{

2
arch/arm64/mm/init.c
View File

@ -190,6 +190,8 @@ void __init bootmem_init(void)
min = PFN_UP(memblock_start_of_DRAM());
max = PFN_DOWN(memblock_end_of_DRAM());
early_memtest(min << PAGE_SHIFT, max << PAGE_SHIFT);
/*
* Sparsemem tries to allocate bootmem in memory_present(), so must be
* done after the fixed reservations.

20
arch/arm64/mm/mmap.c
View File

@ -47,17 +47,16 @@ static int mmap_is_legacy(void)
return sysctl_legacy_va_layout;
}
static unsigned long mmap_rnd(void)
unsigned long arch_mmap_rnd(void)
{
unsigned long rnd = 0;
unsigned long rnd;
if (current->flags & PF_RANDOMIZE)
rnd = (long)get_random_int() & STACK_RND_MASK;
rnd = (unsigned long)get_random_int() & STACK_RND_MASK;
return rnd << PAGE_SHIFT;
}
static unsigned long mmap_base(void)
static unsigned long mmap_base(unsigned long rnd)
{
unsigned long gap = rlimit(RLIMIT_STACK);
@ -66,7 +65,7 @@ static unsigned long mmap_base(void)
else if (gap > MAX_GAP)
gap = MAX_GAP;
return PAGE_ALIGN(STACK_TOP - gap - mmap_rnd());
return PAGE_ALIGN(STACK_TOP - gap - rnd);
}
/*
@ -75,15 +74,20 @@ static unsigned long mmap_base(void)
*/
void arch_pick_mmap_layout(struct mm_struct *mm)
{
unsigned long random_factor = 0UL;
if (current->flags & PF_RANDOMIZE)
random_factor = arch_mmap_rnd();
/*
* Fall back to the standard layout if the personality bit is set, or
* if the expected stack growth is unlimited:
*/
if (mmap_is_legacy()) {
mm->mmap_base = TASK_UNMAPPED_BASE;
mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
mm->get_unmapped_area = arch_get_unmapped_area;
} else {
mm->mmap_base = mmap_base();
mm->mmap_base = mmap_base(random_factor);
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}

4
arch/arm64/mm/mmu.c
View File

@ -550,10 +550,10 @@ void vmemmap_free(unsigned long start, unsigned long end)
#endif /* CONFIG_SPARSEMEM_VMEMMAP */
static pte_t bm_pte[PTRS_PER_PTE] __page_aligned_bss;
#if CONFIG_ARM64_PGTABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
static pmd_t bm_pmd[PTRS_PER_PMD] __page_aligned_bss;
#endif
#if CONFIG_ARM64_PGTABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
static pud_t bm_pud[PTRS_PER_PUD] __page_aligned_bss;
#endif

18
arch/ia64/Kconfig
View File

@ -1,3 +1,8 @@
config PGTABLE_LEVELS
int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
range 3 4 if !IA64_PAGE_SIZE_64KB
default 3
source "init/Kconfig"
source "kernel/Kconfig.freezer"
@ -286,19 +291,6 @@ config IA64_PAGE_SIZE_64KB
endchoice
choice
prompt "Page Table Levels"
default PGTABLE_3
config PGTABLE_3
bool "3 Levels"
config PGTABLE_4
depends on !IA64_PAGE_SIZE_64KB
bool "4 Levels"
endchoice
if IA64_HP_SIM
config HZ
default 32

4
arch/ia64/include/asm/page.h
View File

@ -173,7 +173,7 @@ get_order (unsigned long size)
*/
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pmd; } pmd_t;
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
typedef struct { unsigned long pud; } pud_t;
#endif
typedef struct { unsigned long pgd; } pgd_t;
@ -182,7 +182,7 @@ get_order (unsigned long size)
# define pte_val(x) ((x).pte)
# define pmd_val(x) ((x).pmd)
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
# define pud_val(x) ((x).pud)
#endif
# define pgd_val(x) ((x).pgd)

4
arch/ia64/include/asm/pgalloc.h
View File

@ -32,7 +32,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
quicklist_free(0, NULL, pgd);
}
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
static inline void
pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
{
@ -49,7 +49,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud)
quicklist_free(0, NULL, pud);
}
#define __pud_free_tlb(tlb, pud, address) pud_free((tlb)->mm, pud)
#endif /* CONFIG_PGTABLE_4 */
#endif /* CONFIG_PGTABLE_LEVELS == 4 */
static inline void
pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)

12
arch/ia64/include/asm/pgtable.h
View File

@ -99,7 +99,7 @@
#define PMD_MASK (~(PMD_SIZE-1))
#define PTRS_PER_PMD (1UL << (PTRS_PER_PTD_SHIFT))
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
/*
* Definitions for second level:
*
@ -117,7 +117,7 @@
*
* PGDIR_SHIFT determines what a first-level page table entry can map.
*/
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
#define PGDIR_SHIFT (PUD_SHIFT + (PTRS_PER_PTD_SHIFT))
#else
#define PGDIR_SHIFT (PMD_SHIFT + (PTRS_PER_PTD_SHIFT))
@ -180,7 +180,7 @@
#define __S111 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
#define pgd_ERROR(e) printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__, pgd_val(e))
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
#define pud_ERROR(e) printk("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__, pud_val(e))
#endif
#define pmd_ERROR(e) printk("%s:%d: bad pmd %016lx.\n", __FILE__, __LINE__, pmd_val(e))
@ -281,7 +281,7 @@ extern unsigned long VMALLOC_END;
#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & _PFN_MASK))
#define pud_page(pud) virt_to_page((pud_val(pud) + PAGE_OFFSET))
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
#define pgd_none(pgd) (!pgd_val(pgd))
#define pgd_bad(pgd) (!ia64_phys_addr_valid(pgd_val(pgd)))
#define pgd_present(pgd) (pgd_val(pgd) != 0UL)
@ -384,7 +384,7 @@ pgd_offset (const struct mm_struct *mm, unsigned long address)
here. */
#define pgd_offset_gate(mm, addr) pgd_offset_k(addr)
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
/* Find an entry in the second-level page table.. */
#define pud_offset(dir,addr) \
((pud_t *) pgd_page_vaddr(*(dir)) + (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
@ -586,7 +586,7 @@ extern struct page *zero_page_memmap_ptr;
#define __HAVE_ARCH_PGD_OFFSET_GATE
#ifndef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 3
#include <asm-generic/pgtable-nopud.h>
#endif
#include <asm-generic/pgtable.h>

12
arch/ia64/kernel/ivt.S
View File

@ -146,7 +146,7 @@ ENTRY(vhpt_miss)
(p6) dep r17=r18,r19,3,(PAGE_SHIFT-3) // r17=pgd_offset for region 5
(p7) dep r17=r18,r17,3,(PAGE_SHIFT-6) // r17=pgd_offset for region[0-4]
cmp.eq p7,p6=0,r21 // unused address bits all zeroes?
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
shr.u r28=r22,PUD_SHIFT // shift pud index into position
#else
shr.u r18=r22,PMD_SHIFT // shift pmd index into position
@ -155,7 +155,7 @@ ENTRY(vhpt_miss)
ld8 r17=[r17] // get *pgd (may be 0)
;;
(p7) cmp.eq p6,p7=r17,r0 // was pgd_present(*pgd) == NULL?
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
dep r28=r28,r17,3,(PAGE_SHIFT-3) // r28=pud_offset(pgd,addr)
;;
shr.u r18=r22,PMD_SHIFT // shift pmd index into position
@ -222,13 +222,13 @@ ENTRY(vhpt_miss)
*/
ld8 r25=[r21] // read *pte again
ld8 r26=[r17] // read *pmd again
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
ld8 r19=[r28] // read *pud again
#endif
cmp.ne p6,p7=r0,r0
;;
cmp.ne.or.andcm p6,p7=r26,r20 // did *pmd change
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
cmp.ne.or.andcm p6,p7=r19,r29 // did *pud change
#endif
mov r27=PAGE_SHIFT<<2
@ -476,7 +476,7 @@ ENTRY(nested_dtlb_miss)
(p6) dep r17=r18,r19,3,(PAGE_SHIFT-3) // r17=pgd_offset for region 5
(p7) dep r17=r18,r17,3,(PAGE_SHIFT-6) // r17=pgd_offset for region[0-4]
cmp.eq p7,p6=0,r21 // unused address bits all zeroes?
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
shr.u r18=r22,PUD_SHIFT // shift pud index into position
#else
shr.u r18=r22,PMD_SHIFT // shift pmd index into position
@ -487,7 +487,7 @@ ENTRY(nested_dtlb_miss)
(p7) cmp.eq p6,p7=r17,r0 // was pgd_present(*pgd) == NULL?
dep r17=r18,r17,3,(PAGE_SHIFT-3) // r17=p[u|m]d_offset(pgd,addr)
;;
#ifdef CONFIG_PGTABLE_4
#if CONFIG_PGTABLE_LEVELS == 4
(p7) ld8 r17=[r17] // get *pud (may be 0)
shr.u r18=r22,PMD_SHIFT // shift pmd index into position
;;

4
arch/ia64/kernel/machine_kexec.c
View File

@ -156,9 +156,9 @@ void arch_crash_save_vmcoreinfo(void)
VMCOREINFO_OFFSET(node_memblk_s, start_paddr);
VMCOREINFO_OFFSET(node_memblk_s, size);
#endif
#ifdef CONFIG_PGTABLE_3
#if CONFIG_PGTABLE_LEVELS == 3
VMCOREINFO_CONFIG(PGTABLE_3);
#elif defined(CONFIG_PGTABLE_4)
#elif CONFIG_PGTABLE_LEVELS == 4
VMCOREINFO_CONFIG(PGTABLE_4);
#endif
}

4
arch/m68k/Kconfig
View File

@ -67,6 +67,10 @@ config HZ
default 1000 if CLEOPATRA
default 100
config PGTABLE_LEVELS
default 2 if SUN3 || COLDFIRE
default 3
source "init/Kconfig"
source "kernel/Kconfig.freezer"

7
arch/mips/Kconfig
View File

@ -23,7 +23,7 @@ config MIPS
select HAVE_KRETPROBES
select HAVE_DEBUG_KMEMLEAK
select HAVE_SYSCALL_TRACEPOINTS
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ELF_RANDOMIZE
select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
select RTC_LIB if !MACH_LOONGSON
select GENERIC_ATOMIC64 if !64BIT
@ -2600,6 +2600,11 @@ config STACKTRACE_SUPPORT
bool
default y
config PGTABLE_LEVELS
int
default 3 if 64BIT && !PAGE_SIZE_64KB
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"

4
arch/mips/include/asm/elf.h
View File

@ -410,10 +410,6 @@ struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp);
struct mm_struct;
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
struct arch_elf_state {
int fp_abi;
int interp_fp_abi;

24
arch/mips/mm/mmap.c
View File

@ -142,18 +142,26 @@ unsigned long arch_get_unmapped_area_topdown(struct file *filp,
addr0, len, pgoff, flags, DOWN);
}
unsigned long arch_mmap_rnd(void)
{
unsigned long rnd;
rnd = (unsigned long)get_random_int();
rnd <<= PAGE_SHIFT;
if (TASK_IS_32BIT_ADDR)
rnd &= 0xfffffful;
else
rnd &= 0xffffffful;
return rnd;
}
void arch_pick_mmap_layout(struct mm_struct *mm)
{
unsigned long random_factor = 0UL;
if (current->flags & PF_RANDOMIZE) {
random_factor = get_random_int();
random_factor = random_factor << PAGE_SHIFT;
if (TASK_IS_32BIT_ADDR)
random_factor &= 0xfffffful;
else
random_factor &= 0xffffffful;
}
if (current->flags & PF_RANDOMIZE)
random_factor = arch_mmap_rnd();
if (mmap_is_legacy()) {
mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;

5
arch/parisc/Kconfig
View File

@ -103,6 +103,11 @@ config ARCH_MAY_HAVE_PC_FDC
depends on BROKEN
default y
config PGTABLE_LEVELS
int
default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"

2
arch/parisc/include/asm/pgalloc.h
View File

@ -51,7 +51,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
free_pages((unsigned long)pgd, PGD_ALLOC_ORDER);
}
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
/* Three Level Page Table Support for pmd's */

16
arch/parisc/include/asm/pgtable.h
View File

@ -68,13 +68,11 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
#define KERNEL_INITIAL_ORDER 24 /* 0 to 1<<24 = 16MB */
#define KERNEL_INITIAL_SIZE (1 << KERNEL_INITIAL_ORDER)
#if defined(CONFIG_64BIT) && defined(CONFIG_PARISC_PAGE_SIZE_4KB)
#define PT_NLEVELS 3
#if CONFIG_PGTABLE_LEVELS == 3
#define PGD_ORDER 1 /* Number of pages per pgd */
#define PMD_ORDER 1 /* Number of pages per pmd */
#define PGD_ALLOC_ORDER 2 /* first pgd contains pmd */
#else
#define PT_NLEVELS 2
#define PGD_ORDER 1 /* Number of pages per pgd */
#define PGD_ALLOC_ORDER PGD_ORDER
#endif
@ -93,7 +91,7 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
#define PMD_SHIFT (PLD_SHIFT + BITS_PER_PTE)
#define PMD_SIZE (1UL << PMD_SHIFT)
#define PMD_MASK (~(PMD_SIZE-1))
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
#define BITS_PER_PMD (PAGE_SHIFT + PMD_ORDER - BITS_PER_PMD_ENTRY)
#else
#define __PAGETABLE_PMD_FOLDED
@ -277,7 +275,7 @@ extern unsigned long *empty_zero_page;
#define pgd_flag(x) (pgd_val(x) & PxD_FLAG_MASK)
#define pgd_address(x) ((unsigned long)(pgd_val(x) &~ PxD_FLAG_MASK) << PxD_VALUE_SHIFT)
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
/* The first entry of the permanent pmd is not there if it contains
* the gateway marker */
#define pmd_none(x) (!pmd_val(x) || pmd_flag(x) == PxD_FLAG_ATTACHED)
@ -287,7 +285,7 @@ extern unsigned long *empty_zero_page;
#define pmd_bad(x) (!(pmd_flag(x) & PxD_FLAG_VALID))
#define pmd_present(x) (pmd_flag(x) & PxD_FLAG_PRESENT)
static inline void pmd_clear(pmd_t *pmd) {
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
if (pmd_flag(*pmd) & PxD_FLAG_ATTACHED)
/* This is the entry pointing to the permanent pmd
* attached to the pgd; cannot clear it */
@ -299,7 +297,7 @@ static inline void pmd_clear(pmd_t *pmd) {
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
#define pgd_page_vaddr(pgd) ((unsigned long) __va(pgd_address(pgd)))
#define pgd_page(pgd) virt_to_page((void *)pgd_page_vaddr(pgd))
@ -309,7 +307,7 @@ static inline void pmd_clear(pmd_t *pmd) {
#define pgd_bad(x) (!(pgd_flag(x) & PxD_FLAG_VALID))
#define pgd_present(x) (pgd_flag(x) & PxD_FLAG_PRESENT)
static inline void pgd_clear(pgd_t *pgd) {
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
if(pgd_flag(*pgd) & PxD_FLAG_ATTACHED)
/* This is the permanent pmd attached to the pgd; cannot
* free it */
@ -393,7 +391,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
/* Find an entry in the second-level page table.. */
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
#define pmd_offset(dir,address) \
((pmd_t *) pgd_page_vaddr(*(dir)) + (((address)>>PMD_SHIFT) & (PTRS_PER_PMD-1)))
#else

4
arch/parisc/kernel/entry.S
View File

@ -398,7 +398,7 @@
* can address up to 1TB
*/
.macro L2_ptep pmd,pte,index,va,fault
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
extru \va,31-ASM_PMD_SHIFT,ASM_BITS_PER_PMD,\index
#else
# if defined(CONFIG_64BIT)
@ -436,7 +436,7 @@
* all ILP32 processes and all the kernel for machines with
* under 4GB of memory) */
.macro L3_ptep pgd,pte,index,va,fault
#if PT_NLEVELS == 3 /* we might have a 2-Level scheme, e.g. with 16kb page size */
#if CONFIG_PGTABLE_LEVELS == 3 /* we might have a 2-Level scheme, e.g. with 16kb page size */
extrd,u \va,63-ASM_PGDIR_SHIFT,ASM_BITS_PER_PGD,\index
copy %r0,\pte
extrd,u,*= \va,63-ASM_PGDIR_SHIFT,64-ASM_PGDIR_SHIFT,%r0

4
arch/parisc/kernel/head.S
View File

@ -74,7 +74,7 @@ $bss_loop:
mtctl %r4,%cr24 /* Initialize kernel root pointer */
mtctl %r4,%cr25 /* Initialize user root pointer */
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
/* Set pmd in pgd */
load32 PA(pmd0),%r5
shrd %r5,PxD_VALUE_SHIFT,%r3
@ -97,7 +97,7 @@ $bss_loop:
stw %r3,0(%r4)
ldo (PAGE_SIZE >> PxD_VALUE_SHIFT)(%r3),%r3
addib,> -1,%r1,1b
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
ldo ASM_PMD_ENTRY_SIZE(%r4),%r4
#else
ldo ASM_PGD_ENTRY_SIZE(%r4),%r4

2
arch/parisc/mm/init.c
View File

@ -34,7 +34,7 @@
extern int data_start;
extern void parisc_kernel_start(void); /* Kernel entry point in head.S */
#if PT_NLEVELS == 3
#if CONFIG_PGTABLE_LEVELS == 3
/* NOTE: This layout exactly conforms to the hybrid L2/L3 page table layout
* with the first pmd adjacent to the pgd and below it. gcc doesn't actually
* guarantee that global objects will be laid out in memory in the same order

8
arch/powerpc/Kconfig
View File

@ -88,7 +88,7 @@ config PPC
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select BINFMT_ELF
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ELF_RANDOMIZE
select OF
select OF_EARLY_FLATTREE
select OF_RESERVED_MEM
@ -297,6 +297,12 @@ config ZONE_DMA32
bool
default y if PPC64
config PGTABLE_LEVELS
int
default 2 if !PPC64
default 3 if PPC_64K_PAGES
default 4
source "init/Kconfig"
source "kernel/Kconfig.freezer"

4
arch/powerpc/include/asm/elf.h
View File

@ -128,10 +128,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm,
(0x7ff >> (PAGE_SHIFT - 12)) : \
(0x3ffff >> (PAGE_SHIFT - 12)))
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
#ifdef CONFIG_SPU_BASE
/* Notes used in ET_CORE. Note name is "SPU/<fd>/<filename>". */
#define NT_SPU 1

28
arch/powerpc/mm/mmap.c
View File

@ -53,21 +53,20 @@ static inline int mmap_is_legacy(void)
return sysctl_legacy_va_layout;
}
static unsigned long mmap_rnd(void)
unsigned long arch_mmap_rnd(void)
{
unsigned long rnd = 0;
unsigned long rnd;
/* 8MB for 32bit, 1GB for 64bit */
if (is_32bit_task())
rnd = (unsigned long)get_random_int() % (1<<(23-PAGE_SHIFT));
else
rnd = (unsigned long)get_random_int() % (1<<(30-PAGE_SHIFT));
if (current->flags & PF_RANDOMIZE) {
/* 8MB for 32bit, 1GB for 64bit */
if (is_32bit_task())
rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT)));
else
rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT)));
}
return rnd << PAGE_SHIFT;
}
static inline unsigned long mmap_base(void)
static inline unsigned long mmap_base(unsigned long rnd)
{
unsigned long gap = rlimit(RLIMIT_STACK);
@ -76,7 +75,7 @@ static inline unsigned long mmap_base(void)
else if (gap > MAX_GAP)
gap = MAX_GAP;
return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd());
return PAGE_ALIGN(TASK_SIZE - gap - rnd);
}
/*
@ -85,6 +84,11 @@ static inline unsigned long mmap_base(void)
*/
void arch_pick_mmap_layout(struct mm_struct *mm)
{
unsigned long random_factor = 0UL;
if (current->flags & PF_RANDOMIZE)
random_factor = arch_mmap_rnd();
/*
* Fall back to the standard layout if the personality
* bit is set, or if the expected stack growth is unlimited:
@ -93,7 +97,7 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
mm->mmap_base = TASK_UNMAPPED_BASE;
mm->get_unmapped_area = arch_get_unmapped_area;
} else {
mm->mmap_base = mmap_base();
mm->mmap_base = mmap_base(random_factor);
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}

6
arch/s390/Kconfig
View File

@ -65,6 +65,7 @@ config S390
def_bool y
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SG_CHAIN
select ARCH_HAVE_NMI_SAFE_CMPXCHG
@ -156,6 +157,11 @@ config S390
config SCHED_OMIT_FRAME_POINTER
def_bool y
config PGTABLE_LEVELS
int
default 4 if 64BIT
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"

12
arch/s390/include/asm/elf.h
View File

@ -161,10 +161,11 @@ extern unsigned int vdso_enabled;
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
use of this is to invoke "./ld.so someprog" to test out a new version of
the loader. We need to make sure that it is out of the way of the program
that it will "exec", and that there is sufficient room for the brk. */
extern unsigned long randomize_et_dyn(void);
#define ELF_ET_DYN_BASE randomize_et_dyn()
that it will "exec", and that there is sufficient room for the brk. 64-bit
tasks are aligned to 4GB. */
#define ELF_ET_DYN_BASE (is_32bit_task() ? \
(STACK_TOP / 3 * 2) : \
(STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
/* This yields a mask that user programs can use to figure out what
instruction set this CPU supports. */
@ -225,9 +226,6 @@ struct linux_binprm;
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
int arch_setup_additional_pages(struct linux_binprm *, int);
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
void *fill_cpu_elf_notes(void *ptr, struct save_area *sa, __vector128 *vxrs);
#endif

41
arch/s390/mm/mmap.c
View File

@ -60,22 +60,20 @@ static inline int mmap_is_legacy(void)
return sysctl_legacy_va_layout;
}
static unsigned long mmap_rnd(void)
unsigned long arch_mmap_rnd(void)
{
if (!(current->flags & PF_RANDOMIZE))
return 0;
if (is_32bit_task())
return (get_random_int() & 0x7ff) << PAGE_SHIFT;
else
return (get_random_int() & mmap_rnd_mask) << PAGE_SHIFT;
}
static unsigned long mmap_base_legacy(void)
static unsigned long mmap_base_legacy(unsigned long rnd)
{
return TASK_UNMAPPED_BASE + mmap_rnd();
return TASK_UNMAPPED_BASE + rnd;
}
static inline unsigned long mmap_base(void)
static inline unsigned long mmap_base(unsigned long rnd)
{
unsigned long gap = rlimit(RLIMIT_STACK);
@ -84,7 +82,7 @@ static inline unsigned long mmap_base(void)
else if (gap > MAX_GAP)
gap = MAX_GAP;
gap &= PAGE_MASK;
return STACK_TOP - stack_maxrandom_size() - mmap_rnd() - gap;
return STACK_TOP - stack_maxrandom_size() - rnd - gap;
}
unsigned long
@ -179,17 +177,6 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
return addr;
}
unsigned long randomize_et_dyn(void)
{
unsigned long base;
base = STACK_TOP / 3 * 2;
if (!is_32bit_task())
/* Align to 4GB */
base &= ~((1UL << 32) - 1);
return base + mmap_rnd();
}
#ifndef CONFIG_64BIT
/*
@ -198,15 +185,20 @@ unsigned long randomize_et_dyn(void)
*/
void arch_pick_mmap_layout(struct mm_struct *mm)
{
unsigned long random_factor = 0UL;
if (current->flags & PF_RANDOMIZE)
random_factor = arch_mmap_rnd();
/*
* Fall back to the standard layout if the personality
* bit is set, or if the expected stack growth is unlimited:
*/
if (mmap_is_legacy()) {
mm->mmap_base = mmap_base_legacy();
mm->mmap_base = mmap_base_legacy(random_factor);
mm->get_unmapped_area = arch_get_unmapped_area;
} else {
mm->mmap_base = mmap_base();
mm->mmap_base = mmap_base(random_factor);
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}
@ -273,15 +265,20 @@ s390_get_unmapped_area_topdown(struct file *filp, const unsigned long addr,
*/
void arch_pick_mmap_layout(struct mm_struct *mm)
{
unsigned long random_factor = 0UL;
if (current->flags & PF_RANDOMIZE)
random_factor = arch_mmap_rnd();
/*
* Fall back to the standard layout if the personality
* bit is set, or if the expected stack growth is unlimited:
*/
if (mmap_is_legacy()) {
mm->mmap_base = mmap_base_legacy();
mm->mmap_base = mmap_base_legacy(random_factor);
mm->get_unmapped_area = s390_get_unmapped_area;
} else {
mm->mmap_base = mmap_base();
mm->mmap_base = mmap_base(random_factor);
mm->get_unmapped_area = s390_get_unmapped_area_topdown;
}
}

4
arch/sh/Kconfig
View File

@ -162,6 +162,10 @@ config NEED_DMA_MAP_STATE
config NEED_SG_DMA_LENGTH
def_bool y
config PGTABLE_LEVELS
default 3 if X2TLB
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"

18
arch/sh/kernel/dwarf.c
View File

@ -993,7 +993,7 @@ static struct unwinder dwarf_unwinder = {
.rating = 150,
};
static void dwarf_unwinder_cleanup(void)
static void __init dwarf_unwinder_cleanup(void)
{
struct dwarf_fde *fde, *next_fde;
struct dwarf_cie *cie, *next_cie;
@ -1009,6 +1009,10 @@ static void dwarf_unwinder_cleanup(void)
rbtree_postorder_for_each_entry_safe(cie, next_cie, &cie_root, node)
kfree(cie);
if (dwarf_reg_pool)
mempool_destroy(dwarf_reg_pool);
if (dwarf_frame_pool)
mempool_destroy(dwarf_frame_pool);
kmem_cache_destroy(dwarf_reg_cachep);
kmem_cache_destroy(dwarf_frame_cachep);
}
@ -1176,17 +1180,13 @@ static int __init dwarf_unwinder_init(void)
sizeof(struct dwarf_reg), 0,
SLAB_PANIC | SLAB_HWCACHE_ALIGN | SLAB_NOTRACK, NULL);
dwarf_frame_pool = mempool_create(DWARF_FRAME_MIN_REQ,
mempool_alloc_slab,
mempool_free_slab,
dwarf_frame_cachep);
dwarf_frame_pool = mempool_create_slab_pool(DWARF_FRAME_MIN_REQ,
dwarf_frame_cachep);
if (!dwarf_frame_pool)
goto out;
dwarf_reg_pool = mempool_create(DWARF_REG_MIN_REQ,
mempool_alloc_slab,
mempool_free_slab,
dwarf_reg_cachep);
dwarf_reg_pool = mempool_create_slab_pool(DWARF_REG_MIN_REQ,
dwarf_reg_cachep);
if (!dwarf_reg_pool)
goto out;

4
arch/sparc/Kconfig
View File

@ -146,6 +146,10 @@ config GENERIC_ISA_DMA
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
def_bool y if SPARC64
config PGTABLE_LEVELS
default 4 if 64BIT
default 3
source "init/Kconfig"
source "kernel/Kconfig.freezer"

22
arch/sparc/kernel/mdesc.c
View File

@ -130,26 +130,26 @@ static struct mdesc_mem_ops memblock_mdesc_ops = {
static struct mdesc_handle *mdesc_kmalloc(unsigned int mdesc_size)
{
unsigned int handle_size;
struct mdesc_handle *hp;
unsigned long addr;
void *base;
handle_size = (sizeof(struct mdesc_handle) -
sizeof(struct mdesc_hdr) +
mdesc_size);
/*
* Allocation has to succeed because mdesc update would be missed
* and such events are not retransmitted.
*/
base = kmalloc(handle_size + 15, GFP_KERNEL | __GFP_NOFAIL);
if (base) {
struct mdesc_handle *hp;
unsigned long addr;
addr = (unsigned long)base;
addr = (addr + 15UL) & ~15UL;
hp = (struct mdesc_handle *) addr;
addr = (unsigned long)base;
addr = (addr + 15UL) & ~15UL;
hp = (struct mdesc_handle *) addr;
mdesc_handle_init(hp, handle_size, base);
mdesc_handle_init(hp, handle_size, base);
return hp;
}
return NULL;
return hp;
}
static void mdesc_kfree(struct mdesc_handle *hp)

5
arch/tile/Kconfig
View File

@ -147,6 +147,11 @@ config ARCH_DEFCONFIG
default "arch/tile/configs/tilepro_defconfig" if !TILEGX
default "arch/tile/configs/tilegx_defconfig" if TILEGX
config PGTABLE_LEVELS
int
default 3 if 64BIT
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"

5
arch/um/Kconfig.um
View File

@ -155,3 +155,8 @@ config MMAPPER
config NO_DMA
def_bool y
config PGTABLE_LEVELS
int
default 3 if 3_LEVEL_PGTABLES
default 2

20
arch/x86/Kconfig
View File

@ -87,7 +87,7 @@ config X86
select HAVE_ARCH_KMEMCHECK
select HAVE_ARCH_KASAN if X86_64 && SPARSEMEM_VMEMMAP
select HAVE_USER_RETURN_NOTIFIER
select ARCH_BINFMT_ELF_RANDOMIZE_PIE
select ARCH_HAS_ELF_RANDOMIZE
select HAVE_ARCH_JUMP_LABEL
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select SPARSE_IRQ
@ -99,6 +99,7 @@ config X86
select IRQ_FORCED_THREADING
select HAVE_BPF_JIT if X86_64
select HAVE_ARCH_TRANSPARENT_HUGEPAGE
select HAVE_ARCH_HUGE_VMAP if X86_64 || (X86_32 && X86_PAE)
select ARCH_HAS_SG_CHAIN
select CLKEVT_I8253
select ARCH_HAVE_NMI_SAFE_CMPXCHG
@ -277,6 +278,12 @@ config ARCH_SUPPORTS_UPROBES
config FIX_EARLYCON_MEM
def_bool y
config PGTABLE_LEVELS
int
default 4 if X86_64
default 3 if X86_PAE
default 2
source "init/Kconfig"
source "kernel/Kconfig.freezer"
@ -714,17 +721,6 @@ endif #HYPERVISOR_GUEST
config NO_BOOTMEM
def_bool y
config MEMTEST
bool "Memtest"
---help---
This option adds a kernel parameter 'memtest', which allows memtest
to be set.
memtest=0, mean disabled; -- default
memtest=1, mean do 1 test pattern;
...
memtest=4, mean do 4 test patterns.
If you are unsure how to answer this question, answer N.
source "arch/x86/Kconfig.cpu"
config HPET_TIMER

8
arch/x86/include/asm/e820.h
View File

@ -40,14 +40,6 @@ static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
}
#endif
#ifdef CONFIG_MEMTEST
extern void early_memtest(unsigned long start, unsigned long end);
#else
static inline void early_memtest(unsigned long start, unsigned long end)
{
}
#endif
extern unsigned long e820_end_of_ram_pfn(void);
extern unsigned long e820_end_of_low_ram_pfn(void);
extern u64 early_reserve_e820(u64 sizet, u64 align);

3
arch/x86/include/asm/elf.h
View File

@ -339,9 +339,6 @@ extern int compat_arch_setup_additional_pages(struct linux_binprm *bprm,
int uses_interp);
#define compat_arch_setup_additional_pages compat_arch_setup_additional_pages
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
/*
* True on X86_32 or when emulating IA32 on X86_64
*/

2
arch/x86/include/asm/page_types.h
View File

@ -40,8 +40,10 @@
#ifdef CONFIG_X86_64
#include <asm/page_64_types.h>
#define IOREMAP_MAX_ORDER (PUD_SHIFT)
#else
#include <asm/page_32_types.h>
#define IOREMAP_MAX_ORDER (PMD_SHIFT)
#endif /* CONFIG_X86_64 */
#ifndef __ASSEMBLY__

8
arch/x86/include/asm/paravirt.h
View File

@ -545,7 +545,7 @@ static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
PVOP_VCALL2(pv_mmu_ops.set_pmd, pmdp, val);
}
#if PAGETABLE_LEVELS >= 3
#if CONFIG_PGTABLE_LEVELS >= 3
static inline pmd_t __pmd(pmdval_t val)
{
pmdval_t ret;
@ -585,7 +585,7 @@ static inline void set_pud(pud_t *pudp, pud_t pud)
PVOP_VCALL2(pv_mmu_ops.set_pud, pudp,
val);
}
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
static inline pud_t __pud(pudval_t val)
{
pudval_t ret;
@ -636,9 +636,9 @@ static inline void pud_clear(pud_t *pudp)
set_pud(pudp, __pud(0));
}
#endif /* PAGETABLE_LEVELS == 4 */
#endif /* CONFIG_PGTABLE_LEVELS == 4 */
#endif /* PAGETABLE_LEVELS >= 3 */
#endif /* CONFIG_PGTABLE_LEVELS >= 3 */
#ifdef CONFIG_X86_PAE
/* Special-case pte-setting operations for PAE, which can't update a

8
arch/x86/include/asm/paravirt_types.h
View File

@ -294,7 +294,7 @@ struct pv_mmu_ops {
struct paravirt_callee_save pgd_val;
struct paravirt_callee_save make_pgd;
#if PAGETABLE_LEVELS >= 3
#if CONFIG_PGTABLE_LEVELS >= 3
#ifdef CONFIG_X86_PAE
void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
void (*pte_clear)(struct mm_struct *mm, unsigned long addr,
@ -308,13 +308,13 @@ struct pv_mmu_ops {
struct paravirt_callee_save pmd_val;
struct paravirt_callee_save make_pmd;
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
struct paravirt_callee_save pud_val;
struct paravirt_callee_save make_pud;
void (*set_pgd)(pgd_t *pudp, pgd_t pgdval);
#endif /* PAGETABLE_LEVELS == 4 */
#endif /* PAGETABLE_LEVELS >= 3 */
#endif /* CONFIG_PGTABLE_LEVELS == 4 */
#endif /* CONFIG_PGTABLE_LEVELS >= 3 */
struct pv_lazy_ops lazy_mode;

8
arch/x86/include/asm/pgalloc.h
View File

@ -77,7 +77,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
#define pmd_pgtable(pmd) pmd_page(pmd)
#if PAGETABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
{
struct page *page;
@ -116,7 +116,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
}
#endif /* CONFIG_X86_PAE */
#if PAGETABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
{
paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT);
@ -142,7 +142,7 @@ static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
___pud_free_tlb(tlb, pud);
}
#endif /* PAGETABLE_LEVELS > 3 */
#endif /* PAGETABLE_LEVELS > 2 */
#endif /* CONFIG_PGTABLE_LEVELS > 3 */
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
#endif /* _ASM_X86_PGALLOC_H */

1
arch/x86/include/asm/pgtable-2level_types.h
View File

@ -17,7 +17,6 @@ typedef union {
#endif /* !__ASSEMBLY__ */
#define SHARED_KERNEL_PMD 0
#define PAGETABLE_LEVELS 2
/*
* traditional i386 two-level paging structure:

2
arch/x86/include/asm/pgtable-3level_types.h
View File

@ -24,8 +24,6 @@ typedef union {
#define SHARED_KERNEL_PMD 1
#endif
#define PAGETABLE_LEVELS 3
/*
* PGDIR_SHIFT determines what a top-level page table entry can map
*/

8
arch/x86/include/asm/pgtable.h
View File

@ -551,7 +551,7 @@ static inline unsigned long pages_to_mb(unsigned long npg)
return npg >> (20 - PAGE_SHIFT);
}
#if PAGETABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
static inline int pud_none(pud_t pud)
{
return native_pud_val(pud) == 0;
@ -594,9 +594,9 @@ static inline int pud_large(pud_t pud)
{
return 0;
}
#endif /* PAGETABLE_LEVELS > 2 */
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
#if PAGETABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
static inline int pgd_present(pgd_t pgd)
{
return pgd_flags(pgd) & _PAGE_PRESENT;
@ -633,7 +633,7 @@ static inline int pgd_none(pgd_t pgd)
{
return !native_pgd_val(pgd);
}
#endif /* PAGETABLE_LEVELS > 3 */
#endif /* CONFIG_PGTABLE_LEVELS > 3 */
#endif /* __ASSEMBLY__ */

1
arch/x86/include/asm/pgtable_64_types.h
View File

@ -20,7 +20,6 @@ typedef struct { pteval_t pte; } pte_t;
#endif /* !__ASSEMBLY__ */
#define SHARED_KERNEL_PMD 0
#define PAGETABLE_LEVELS 4
/*
* PGDIR_SHIFT determines what a top-level page table entry can map

4
arch/x86/include/asm/pgtable_types.h
View File

@ -234,7 +234,7 @@ static inline pgdval_t pgd_flags(pgd_t pgd)
return native_pgd_val(pgd) & PTE_FLAGS_MASK;
}
#if PAGETABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
typedef struct { pudval_t pud; } pud_t;
static inline pud_t native_make_pud(pmdval_t val)
@ -255,7 +255,7 @@ static inline pudval_t native_pud_val(pud_t pud)
}
#endif
#if PAGETABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
typedef struct { pmdval_t pmd; } pmd_t;
static inline pmd_t native_make_pmd(pmdval_t val)

2
arch/x86/kernel/kvm.c
View File

@ -513,7 +513,7 @@ void __init kvm_guest_init(void)
* can get false positives too easily, for example if the host is
* overcommitted.
*/
watchdog_enable_hardlockup_detector(false);
hardlockup_detector_disable();
}
static noinline uint32_t __kvm_cpuid_base(void)

6
arch/x86/kernel/paravirt.c
View File

@ -443,7 +443,7 @@ struct pv_mmu_ops pv_mmu_ops = {
.ptep_modify_prot_start = __ptep_modify_prot_start,
.ptep_modify_prot_commit = __ptep_modify_prot_commit,
#if PAGETABLE_LEVELS >= 3
#if CONFIG_PGTABLE_LEVELS >= 3
#ifdef CONFIG_X86_PAE
.set_pte_atomic = native_set_pte_atomic,
.pte_clear = native_pte_clear,
@ -454,13 +454,13 @@ struct pv_mmu_ops pv_mmu_ops = {
.pmd_val = PTE_IDENT,
.make_pmd = PTE_IDENT,
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
.pud_val = PTE_IDENT,
.make_pud = PTE_IDENT,
.set_pgd = native_set_pgd,
#endif
#endif /* PAGETABLE_LEVELS >= 3 */
#endif /* CONFIG_PGTABLE_LEVELS >= 3 */
.pte_val = PTE_IDENT,
.pgd_val = PTE_IDENT,

2
arch/x86/mm/Makefile
View File

@ -32,6 +32,4 @@ obj-$(CONFIG_AMD_NUMA) += amdtopology.o
obj-$(CONFIG_ACPI_NUMA) += srat.o
obj-$(CONFIG_NUMA_EMU) += numa_emulation.o
obj-$(CONFIG_MEMTEST) += memtest.o
obj-$(CONFIG_X86_INTEL_MPX) += mpx.o

23
arch/x86/mm/ioremap.c
View File

@ -67,8 +67,13 @@ static int __ioremap_check_ram(unsigned long start_pfn, unsigned long nr_pages,
/*
* Remap an arbitrary physical address space into the kernel virtual
* address space. Needed when the kernel wants to access high addresses
* directly.
* address space. It transparently creates kernel huge I/O mapping when
* the physical address is aligned by a huge page size (1GB or 2MB) and
* the requested size is at least the huge page size.
*
* NOTE: MTRRs can override PAT memory types with a 4KB granularity.
* Therefore, the mapping code falls back to use a smaller page toward 4KB
* when a mapping range is covered by non-WB type of MTRRs.
*
* NOTE! We need to allow non-page-aligned mappings too: we will obviously
* have to convert them into an offset in a page-aligned mapping, but the
@ -326,6 +331,20 @@ void iounmap(volatile void __iomem *addr)
}
EXPORT_SYMBOL(iounmap);
int arch_ioremap_pud_supported(void)
{
#ifdef CONFIG_X86_64
return cpu_has_gbpages;
#else
return 0;
#endif
}
int arch_ioremap_pmd_supported(void)
{
return cpu_has_pse;
}
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
* access

38
arch/x86/mm/mmap.c
View File

@ -65,24 +65,23 @@ static int mmap_is_legacy(void)
return sysctl_legacy_va_layout;
}
static unsigned long mmap_rnd(void)
unsigned long arch_mmap_rnd(void)
{
unsigned long rnd = 0;
unsigned long rnd;
/*
* 8 bits of randomness in 32bit mmaps, 20 address space bits
* 28 bits of randomness in 64bit mmaps, 40 address space bits
*/
if (current->flags & PF_RANDOMIZE) {
if (mmap_is_ia32())
rnd = get_random_int() % (1<<8);
else
rnd = get_random_int() % (1<<28);
}
* 8 bits of randomness in 32bit mmaps, 20 address space bits
* 28 bits of randomness in 64bit mmaps, 40 address space bits
*/
if (mmap_is_ia32())
rnd = (unsigned long)get_random_int() % (1<<8);
else
rnd = (unsigned long)get_random_int() % (1<<28);
return rnd << PAGE_SHIFT;
}
static unsigned long mmap_base(void)
static unsigned long mmap_base(unsigned long rnd)
{
unsigned long gap = rlimit(RLIMIT_STACK);
@ -91,19 +90,19 @@ static unsigned long mmap_base(void)
else if (gap > MAX_GAP)
gap = MAX_GAP;
return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd());
return PAGE_ALIGN(TASK_SIZE - gap - rnd);
}
/*
* Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64
* does, but not when emulating X86_32
*/
static unsigned long mmap_legacy_base(void)
static unsigned long mmap_legacy_base(unsigned long rnd)
{
if (mmap_is_ia32())
return TASK_UNMAPPED_BASE;
else
return TASK_UNMAPPED_BASE + mmap_rnd();
return TASK_UNMAPPED_BASE + rnd;
}
/*
@ -112,13 +111,18 @@ static unsigned long mmap_legacy_base(void)
*/
void arch_pick_mmap_layout(struct mm_struct *mm)
{
mm->mmap_legacy_base = mmap_legacy_base();
mm->mmap_base = mmap_base();
unsigned long random_factor = 0UL;
if (current->flags & PF_RANDOMIZE)
random_factor = arch_mmap_rnd();
mm->mmap_legacy_base = mmap_legacy_base(random_factor);
if (mmap_is_legacy()) {
mm->mmap_base = mm->mmap_legacy_base;
mm->get_unmapped_area = arch_get_unmapped_area;
} else {
mm->mmap_base = mmap_base(random_factor);
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}

79
arch/x86/mm/pgtable.c
View File

@ -4,6 +4,7 @@
#include <asm/pgtable.h>
#include <asm/tlb.h>
#include <asm/fixmap.h>
#include <asm/mtrr.h>
#define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO
@ -58,7 +59,7 @@ void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
tlb_remove_page(tlb, pte);
}
#if PAGETABLE_LEVELS > 2
#if CONFIG_PGTABLE_LEVELS > 2
void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
{
struct page *page = virt_to_page(pmd);
@ -74,14 +75,14 @@ void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
tlb_remove_page(tlb, page);
}
#if PAGETABLE_LEVELS > 3
#if CONFIG_PGTABLE_LEVELS > 3
void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud)
{
paravirt_release_pud(__pa(pud) >> PAGE_SHIFT);
tlb_remove_page(tlb, virt_to_page(pud));
}
#endif /* PAGETABLE_LEVELS > 3 */
#endif /* PAGETABLE_LEVELS > 2 */
#endif /* CONFIG_PGTABLE_LEVELS > 3 */
#endif /* CONFIG_PGTABLE_LEVELS > 2 */
static inline void pgd_list_add(pgd_t *pgd)
{
@ -117,9 +118,9 @@ static void pgd_ctor(struct mm_struct *mm, pgd_t *pgd)
/* If the pgd points to a shared pagetable level (either the
ptes in non-PAE, or shared PMD in PAE), then just copy the
references from swapper_pg_dir. */
if (PAGETABLE_LEVELS == 2 ||
(PAGETABLE_LEVELS == 3 && SHARED_KERNEL_PMD) ||
PAGETABLE_LEVELS == 4) {
if (CONFIG_PGTABLE_LEVELS == 2 ||
(CONFIG_PGTABLE_LEVELS == 3 && SHARED_KERNEL_PMD) ||
CONFIG_PGTABLE_LEVELS == 4) {
clone_pgd_range(pgd + KERNEL_PGD_BOUNDARY,
swapper_pg_dir + KERNEL_PGD_BOUNDARY,
KERNEL_PGD_PTRS);
@ -560,3 +561,67 @@ void native_set_fixmap(enum fixed_addresses idx, phys_addr_t phys,
{
__native_set_fixmap(idx, pfn_pte(phys >> PAGE_SHIFT, flags));
}
#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
{
u8 mtrr;
/*
* Do not use a huge page when the range is covered by non-WB type
* of MTRRs.
*/
mtrr = mtrr_type_lookup(addr, addr + PUD_SIZE);
if ((mtrr != MTRR_TYPE_WRBACK) && (mtrr != 0xFF))
return 0;
prot = pgprot_4k_2_large(prot);
set_pte((pte_t *)pud, pfn_pte(
(u64)addr >> PAGE_SHIFT,
__pgprot(pgprot_val(prot) | _PAGE_PSE)));
return 1;
}
int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
{
u8 mtrr;
/*
* Do not use a huge page when the range is covered by non-WB type
* of MTRRs.
*/
mtrr = mtrr_type_lookup(addr, addr + PMD_SIZE);
if ((mtrr != MTRR_TYPE_WRBACK) && (mtrr != 0xFF))
return 0;
prot = pgprot_4k_2_large(prot);
set_pte((pte_t *)pmd, pfn_pte(
(u64)addr >> PAGE_SHIFT,
__pgprot(pgprot_val(prot) | _PAGE_PSE)));
return 1;
}
int pud_clear_huge(pud_t *pud)
{
if (pud_large(*pud)) {
pud_clear(pud);
return 1;
}
return 0;
}
int pmd_clear_huge(pmd_t *pmd)
{
if (pmd_large(*pmd)) {
pmd_clear(pmd);
return 1;
}
return 0;
}
#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */

14
arch/x86/xen/mmu.c
View File

@ -502,7 +502,7 @@ __visible pmd_t xen_make_pmd(pmdval_t pmd)
}
PV_CALLEE_SAVE_REGS_THUNK(xen_make_pmd);
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
__visible pudval_t xen_pud_val(pud_t pud)
{
return pte_mfn_to_pfn(pud.pud);
@ -589,7 +589,7 @@ static void xen_set_pgd(pgd_t *ptr, pgd_t val)
xen_mc_issue(PARAVIRT_LAZY_MMU);
}
#endif /* PAGETABLE_LEVELS == 4 */
#endif /* CONFIG_PGTABLE_LEVELS == 4 */
/*
* (Yet another) pagetable walker. This one is intended for pinning a
@ -1628,7 +1628,7 @@ static void xen_release_pmd(unsigned long pfn)
xen_release_ptpage(pfn, PT_PMD);
}
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
static void xen_alloc_pud(struct mm_struct *mm, unsigned long pfn)
{
xen_alloc_ptpage(mm, pfn, PT_PUD);
@ -2046,7 +2046,7 @@ static void __init xen_post_allocator_init(void)
pv_mmu_ops.set_pte = xen_set_pte;
pv_mmu_ops.set_pmd = xen_set_pmd;
pv_mmu_ops.set_pud = xen_set_pud;
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
pv_mmu_ops.set_pgd = xen_set_pgd;
#endif
@ -2056,7 +2056,7 @@ static void __init xen_post_allocator_init(void)
pv_mmu_ops.alloc_pmd = xen_alloc_pmd;
pv_mmu_ops.release_pte = xen_release_pte;
pv_mmu_ops.release_pmd = xen_release_pmd;
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
pv_mmu_ops.alloc_pud = xen_alloc_pud;
pv_mmu_ops.release_pud = xen_release_pud;
#endif
@ -2122,14 +2122,14 @@ static const struct pv_mmu_ops xen_mmu_ops __initconst = {
.make_pmd = PV_CALLEE_SAVE(xen_make_pmd),
.pmd_val = PV_CALLEE_SAVE(xen_pmd_val),
#if PAGETABLE_LEVELS == 4
#if CONFIG_PGTABLE_LEVELS == 4
.pud_val = PV_CALLEE_SAVE(xen_pud_val),
.make_pud = PV_CALLEE_SAVE(xen_make_pud),
.set_pgd = xen_set_pgd_hyper,
.alloc_pud = xen_alloc_pmd_init,
.release_pud = xen_release_pmd_init,
#endif /* PAGETABLE_LEVELS == 4 */
#endif /* CONFIG_PGTABLE_LEVELS == 4 */
.activate_mm = xen_activate_mm,
.dup_mmap = xen_dup_mmap,

21
drivers/base/memory.c
View File

@ -219,6 +219,7 @@ static bool pages_correctly_reserved(unsigned long start_pfn)
/*
* MEMORY_HOTPLUG depends on SPARSEMEM in mm/Kconfig, so it is
* OK to have direct references to sparsemem variables in here.
* Must already be protected by mem_hotplug_begin().
*/
static int
memory_block_action(unsigned long phys_index, unsigned long action, int online_type)
@ -228,7 +229,7 @@ memory_block_action(unsigned long phys_index, unsigned long action, int online_t
struct page *first_page;
int ret;
start_pfn = phys_index << PFN_SECTION_SHIFT;
start_pfn = section_nr_to_pfn(phys_index);
first_page = pfn_to_page(start_pfn);
switch (action) {
@ -286,6 +287,7 @@ static int memory_subsys_online(struct device *dev)
if (mem->online_type < 0)
mem->online_type = MMOP_ONLINE_KEEP;
/* Already under protection of mem_hotplug_begin() */
ret = memory_block_change_state(mem, MEM_ONLINE, MEM_OFFLINE);
/* clear online_type */
@ -328,17 +330,19 @@ store_mem_state(struct device *dev,
goto err;
}
/*
* Memory hotplug needs to hold mem_hotplug_begin() for probe to find
* the correct memory block to online before doing device_online(dev),
* which will take dev->mutex. Take the lock early to prevent an
* inversion, memory_subsys_online() callbacks will be implemented by
* assuming it's already protected.
*/
mem_hotplug_begin();
switch (online_type) {
case MMOP_ONLINE_KERNEL:
case MMOP_ONLINE_MOVABLE:
case MMOP_ONLINE_KEEP:
/*
* mem->online_type is not protected so there can be a
* race here. However, when racing online, the first
* will succeed and the second will just return as the
* block will already be online. The online type
* could be either one, but that is expected.
*/
mem->online_type = online_type;
ret = device_online(&mem->dev);
break;
@ -349,6 +353,7 @@ store_mem_state(struct device *dev,
ret = -EINVAL; /* should never happen */
}
mem_hotplug_done();
err:
unlock_device_hotplug();

4
drivers/s390/scsi/zfcp_erp.c
View File

@ -738,11 +738,11 @@ static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *act)
return ZFCP_ERP_FAILED;
if (mempool_resize(act->adapter->pool.sr_data,
act->adapter->stat_read_buf_num, GFP_KERNEL))
act->adapter->stat_read_buf_num))
return ZFCP_ERP_FAILED;
if (mempool_resize(act->adapter->pool.status_read_req,
act->adapter->stat_read_buf_num, GFP_KERNEL))
act->adapter->stat_read_buf_num))
return ZFCP_ERP_FAILED;
atomic_set(&act->adapter->stat_miss, act->adapter->stat_read_buf_num);

4
drivers/staging/lustre/lustre/include/linux/lustre_patchless_compat.h
View File

@ -55,7 +55,9 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
if (PagePrivate(page))
page->mapping->a_ops->invalidatepage(page, 0, PAGE_CACHE_SIZE);
cancel_dirty_page(page, PAGE_SIZE);
if (TestClearPageDirty(page))
account_page_cleaned(page, mapping);
ClearPageMappedToDisk(page);
ll_delete_from_page_cache(page);
}

16
drivers/xen/tmem.c
View File

@ -397,13 +397,15 @@ static int __init xen_tmem_init(void)
#ifdef CONFIG_CLEANCACHE
BUG_ON(sizeof(struct cleancache_filekey) != sizeof(struct tmem_oid));
if (tmem_enabled && cleancache) {
char *s = "";
struct cleancache_ops *old_ops =
cleancache_register_ops(&tmem_cleancache_ops);
if (old_ops)
s = " (WARNING: cleancache_ops overridden)";
pr_info("cleancache enabled, RAM provided by Xen Transcendent Memory%s\n",
s);
int err;
err = cleancache_register_ops(&tmem_cleancache_ops);
if (err)
pr_warn("xen-tmem: failed to enable cleancache: %d\n",
err);
else
pr_info("cleancache enabled, RAM provided by "
"Xen Transcendent Memory\n");
}
#endif
#ifdef CONFIG_XEN_SELFBALLOONING

3
fs/Kconfig.binfmt
View File

@ -27,9 +27,6 @@ config COMPAT_BINFMT_ELF
bool
depends on COMPAT && BINFMT_ELF
config ARCH_BINFMT_ELF_RANDOMIZE_PIE
bool
config ARCH_BINFMT_ELF_STATE
bool

31
fs/binfmt_elf.c
View File

@ -31,6 +31,7 @@
#include <linux/security.h>
#include <linux/random.h>
#include <linux/elf.h>
#include <linux/elf-randomize.h>
#include <linux/utsname.h>
#include <linux/coredump.h>
#include <linux/sched.h>
@ -862,6 +863,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
i < loc->elf_ex.e_phnum; i++, elf_ppnt++) {
int elf_prot = 0, elf_flags;
unsigned long k, vaddr;
unsigned long total_size = 0;
if (elf_ppnt->p_type != PT_LOAD)
continue;
@ -909,25 +911,20 @@ static int load_elf_binary(struct linux_binprm *bprm)
* default mmap base, as well as whatever program they
* might try to exec. This is because the brk will
* follow the loader, and is not movable. */
#ifdef CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE
/* Memory randomization might have been switched off
* in runtime via sysctl or explicit setting of
* personality flags.
* If that is the case, retain the original non-zero
* load_bias value in order to establish proper
* non-randomized mappings.
*/
load_bias = ELF_ET_DYN_BASE - vaddr;
if (current->flags & PF_RANDOMIZE)
load_bias = 0;
else
load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr);
#else
load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr);
#endif
load_bias += arch_mmap_rnd();
load_bias = ELF_PAGESTART(load_bias);
total_size = total_mapping_size(elf_phdata,
loc->elf_ex.e_phnum);
if (!total_size) {
error = -EINVAL;
goto out_free_dentry;
}
}
error = elf_map(bprm->file, load_bias + vaddr, elf_ppnt,
elf_prot, elf_flags, 0);
elf_prot, elf_flags, total_size);
if (BAD_ADDR(error)) {
retval = IS_ERR((void *)error) ?
PTR_ERR((void*)error) : -EINVAL;
@ -1053,15 +1050,13 @@ static int load_elf_binary(struct linux_binprm *bprm)
current->mm->end_data = end_data;
current->mm->start_stack = bprm->p;
#ifdef arch_randomize_brk
if ((current->flags & PF_RANDOMIZE) && (randomize_va_space > 1)) {
current->mm->brk = current->mm->start_brk =
arch_randomize_brk(current->mm);
#ifdef CONFIG_COMPAT_BRK
#ifdef compat_brk_randomized
current->brk_randomized = 1;
#endif
}
#endif
if (current->personality & MMAP_PAGE_ZERO) {
/* Why this, you ask??? Well SVr4 maps page 0 as read-only,

4
fs/buffer.c
View File

@ -3243,8 +3243,8 @@ int try_to_free_buffers(struct page *page)
* to synchronise against __set_page_dirty_buffers and prevent the
* dirty bit from being lost.
*/
if (ret)
cancel_dirty_page(page, PAGE_CACHE_SIZE);
if (ret && TestClearPageDirty(page))
account_page_cleaned(page, mapping);
spin_unlock(&mapping->private_lock);
out:
if (buffers_to_free) {

6
fs/cifs/connect.c
View File

@ -773,8 +773,7 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server)
length = atomic_dec_return(&tcpSesAllocCount);
if (length > 0)
mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
GFP_KERNEL);
mempool_resize(cifs_req_poolp, length + cifs_min_rcv);
}
static int
@ -848,8 +847,7 @@ cifs_demultiplex_thread(void *p)
length = atomic_inc_return(&tcpSesAllocCount);
if (length > 1)
mempool_resize(cifs_req_poolp, length + cifs_min_rcv,
GFP_KERNEL);
mempool_resize(cifs_req_poolp, length + cifs_min_rcv);
set_freezable();
while (server->tcpStatus != CifsExiting) {

2
fs/hugetlbfs/inode.c
View File

@ -319,7 +319,7 @@ static int hugetlbfs_write_end(struct file *file, struct address_space *mapping,
static void truncate_huge_page(struct page *page)
{
cancel_dirty_page(page, /* No IO accounting for huge pages? */0);
ClearPageDirty(page);
ClearPageUptodate(page);
delete_from_page_cache(page);
}

5
fs/nfs/write.c
View File

@ -1876,11 +1876,6 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page)
* request from the inode / page_private pointer and
* release it */
nfs_inode_remove_request(req);
/*
* In case nfs_inode_remove_request has marked the
* page as being dirty
*/
cancel_dirty_page(page, PAGE_CACHE_SIZE);
nfs_unlock_and_release_request(req);
}

48
fs/ocfs2/alloc.c
View File

@ -3370,7 +3370,7 @@ static int ocfs2_merge_rec_right(struct ocfs2_path *left_path,
ret = ocfs2_get_right_path(et, left_path, &right_path);
if (ret) {
mlog_errno(ret);
goto out;
return ret;
}
right_el = path_leaf_el(right_path);
@ -3453,8 +3453,7 @@ static int ocfs2_merge_rec_right(struct ocfs2_path *left_path,
subtree_index);
}
out:
if (right_path)
ocfs2_free_path(right_path);
ocfs2_free_path(right_path);
return ret;
}
@ -3536,7 +3535,7 @@ static int ocfs2_merge_rec_left(struct ocfs2_path *right_path,
ret = ocfs2_get_left_path(et, right_path, &left_path);
if (ret) {
mlog_errno(ret);
goto out;
return ret;
}
left_el = path_leaf_el(left_path);
@ -3647,8 +3646,7 @@ static int ocfs2_merge_rec_left(struct ocfs2_path *right_path,
right_path, subtree_index);
}
out:
if (left_path)
ocfs2_free_path(left_path);
ocfs2_free_path(left_path);
return ret;
}
@ -4334,17 +4332,17 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
} else if (path->p_tree_depth > 0) {
status = ocfs2_find_cpos_for_left_leaf(sb, path, &left_cpos);
if (status)
goto out;
goto exit;
if (left_cpos != 0) {
left_path = ocfs2_new_path_from_path(path);
if (!left_path)
goto out;
goto exit;
status = ocfs2_find_path(et->et_ci, left_path,
left_cpos);
if (status)
goto out;
goto free_left_path;
new_el = path_leaf_el(left_path);
@ -4361,7 +4359,7 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
le16_to_cpu(new_el->l_next_free_rec),
le16_to_cpu(new_el->l_count));
status = -EINVAL;
goto out;
goto free_left_path;
}
rec = &new_el->l_recs[
le16_to_cpu(new_el->l_next_free_rec) - 1];
@ -4388,18 +4386,18 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
path->p_tree_depth > 0) {
status = ocfs2_find_cpos_for_right_leaf(sb, path, &right_cpos);
if (status)
goto out;
goto free_left_path;
if (right_cpos == 0)
goto out;
goto free_left_path;
right_path = ocfs2_new_path_from_path(path);
if (!right_path)
goto out;
goto free_left_path;
status = ocfs2_find_path(et->et_ci, right_path, right_cpos);
if (status)
goto out;
goto free_right_path;
new_el = path_leaf_el(right_path);
rec = &new_el->l_recs[0];
@ -4413,7 +4411,7 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
(unsigned long long)le64_to_cpu(eb->h_blkno),
le16_to_cpu(new_el->l_next_free_rec));
status = -EINVAL;
goto out;
goto free_right_path;
}
rec = &new_el->l_recs[1];
}
@ -4430,12 +4428,11 @@ ocfs2_figure_merge_contig_type(struct ocfs2_extent_tree *et,
ret = contig_type;
}
out:
if (left_path)
ocfs2_free_path(left_path);
if (right_path)
ocfs2_free_path(right_path);
free_right_path:
ocfs2_free_path(right_path);
free_left_path:
ocfs2_free_path(left_path);
exit:
return ret;
}
@ -6858,13 +6855,13 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
if (pages == NULL) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
return ret;
}
ret = ocfs2_reserve_clusters(osb, 1, &data_ac);
if (ret) {
mlog_errno(ret);
goto out;
goto free_pages;
}
}
@ -6996,9 +6993,8 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
out:
if (data_ac)
ocfs2_free_alloc_context(data_ac);
if (pages)
kfree(pages);
free_pages:
kfree(pages);
return ret;
}

155
fs/ocfs2/aops.c
View File

@ -664,6 +664,117 @@ static int ocfs2_is_overwrite(struct ocfs2_super *osb,
return 0;
}
static int ocfs2_direct_IO_zero_extend(struct ocfs2_super *osb,
struct inode *inode, loff_t offset,
u64 zero_len, int cluster_align)
{
u32 p_cpos = 0;
u32 v_cpos = ocfs2_bytes_to_clusters(osb->sb, i_size_read(inode));
unsigned int num_clusters = 0;
unsigned int ext_flags = 0;
int ret = 0;
if (offset <= i_size_read(inode) || cluster_align)
return 0;
ret = ocfs2_get_clusters(inode, v_cpos, &p_cpos, &num_clusters,
&ext_flags);
if (ret < 0) {
mlog_errno(ret);
return ret;
}
if (p_cpos && !(ext_flags & OCFS2_EXT_UNWRITTEN)) {
u64 s = i_size_read(inode);
sector_t sector = (p_cpos << (osb->s_clustersize_bits - 9)) +
(do_div(s, osb->s_clustersize) >> 9);
ret = blkdev_issue_zeroout(osb->sb->s_bdev, sector,
zero_len >> 9, GFP_NOFS, false);
if (ret < 0)
mlog_errno(ret);
}
return ret;
}
static int ocfs2_direct_IO_extend_no_holes(struct ocfs2_super *osb,
struct inode *inode, loff_t offset)
{
u64 zero_start, zero_len, total_zero_len;
u32 p_cpos = 0, clusters_to_add;
u32 v_cpos = ocfs2_bytes_to_clusters(osb->sb, i_size_read(inode));
unsigned int num_clusters = 0;
unsigned int ext_flags = 0;
u32 size_div, offset_div;
int ret = 0;
{
u64 o = offset;
u64 s = i_size_read(inode);
offset_div = do_div(o, osb->s_clustersize);
size_div = do_div(s, osb->s_clustersize);
}
if (offset <= i_size_read(inode))
return 0;
clusters_to_add = ocfs2_bytes_to_clusters(inode->i_sb, offset) -
ocfs2_bytes_to_clusters(inode->i_sb, i_size_read(inode));
total_zero_len = offset - i_size_read(inode);
if (clusters_to_add)
total_zero_len -= offset_div;
/* Allocate clusters to fill out holes, and this is only needed
* when we add more than one clusters. Otherwise the cluster will
* be allocated during direct IO */
if (clusters_to_add > 1) {
ret = ocfs2_extend_allocation(inode,
OCFS2_I(inode)->ip_clusters,
clusters_to_add - 1, 0);
if (ret) {
mlog_errno(ret);
goto out;
}
}
while (total_zero_len) {
ret = ocfs2_get_clusters(inode, v_cpos, &p_cpos, &num_clusters,
&ext_flags);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
zero_start = ocfs2_clusters_to_bytes(osb->sb, p_cpos) +
size_div;
zero_len = ocfs2_clusters_to_bytes(osb->sb, num_clusters) -
size_div;
zero_len = min(total_zero_len, zero_len);
if (p_cpos && !(ext_flags & OCFS2_EXT_UNWRITTEN)) {
ret = blkdev_issue_zeroout(osb->sb->s_bdev,
zero_start >> 9, zero_len >> 9,
GFP_NOFS, false);
if (ret < 0) {
mlog_errno(ret);
goto out;
}
}
total_zero_len -= zero_len;
v_cpos += ocfs2_bytes_to_clusters(osb->sb, zero_len + size_div);
/* Only at first iteration can be cluster not aligned.
* So set size_div to 0 for the rest */
size_div = 0;
}
out:
return ret;
}
static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
struct iov_iter *iter,
loff_t offset)
@ -678,8 +789,8 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
struct buffer_head *di_bh = NULL;
size_t count = iter->count;
journal_t *journal = osb->journal->j_journal;
u32 zero_len;
int cluster_align;
u64 zero_len_head, zero_len_tail;
int cluster_align_head, cluster_align_tail;
loff_t final_size = offset + count;
int append_write = offset >= i_size_read(inode) ? 1 : 0;
unsigned int num_clusters = 0;
@ -687,9 +798,16 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
{
u64 o = offset;
u64 s = i_size_read(inode);
zero_len = do_div(o, 1 << osb->s_clustersize_bits);
cluster_align = !zero_len;
zero_len_head = do_div(o, 1 << osb->s_clustersize_bits);
cluster_align_head = !zero_len_head;
zero_len_tail = osb->s_clustersize -
do_div(s, osb->s_clustersize);
if ((offset - i_size_read(inode)) < zero_len_tail)
zero_len_tail = offset - i_size_read(inode);
cluster_align_tail = !zero_len_tail;
}
/*
@ -707,21 +825,23 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
}
if (append_write) {
ret = ocfs2_inode_lock(inode, &di_bh, 1);
ret = ocfs2_inode_lock(inode, NULL, 1);
if (ret < 0) {
mlog_errno(ret);
goto clean_orphan;
}
/* zeroing out the previously allocated cluster tail
* that but not zeroed */
if (ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)))
ret = ocfs2_zero_extend(inode, di_bh, offset);
ret = ocfs2_direct_IO_zero_extend(osb, inode, offset,
zero_len_tail, cluster_align_tail);
else
ret = ocfs2_extend_no_holes(inode, di_bh, offset,
ret = ocfs2_direct_IO_extend_no_holes(osb, inode,
offset);
if (ret < 0) {
mlog_errno(ret);
ocfs2_inode_unlock(inode, 1);
brelse(di_bh);
goto clean_orphan;
}
@ -729,13 +849,10 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
if (is_overwrite < 0) {
mlog_errno(is_overwrite);
ocfs2_inode_unlock(inode, 1);
brelse(di_bh);
goto clean_orphan;
}
ocfs2_inode_unlock(inode, 1);
brelse(di_bh);
di_bh = NULL;
}
written = __blockdev_direct_IO(WRITE, iocb, inode, inode->i_sb->s_bdev,
@ -772,15 +889,23 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
if (ret < 0)
mlog_errno(ret);
}
} else if (written < 0 && append_write && !is_overwrite &&
!cluster_align) {
} else if (written > 0 && append_write && !is_overwrite &&
!cluster_align_head) {
/* zeroing out the allocated cluster head */
u32 p_cpos = 0;
u32 v_cpos = ocfs2_bytes_to_clusters(osb->sb, offset);
ret = ocfs2_inode_lock(inode, NULL, 0);
if (ret < 0) {
mlog_errno(ret);
goto clean_orphan;
}
ret = ocfs2_get_clusters(inode, v_cpos, &p_cpos,
&num_clusters, &ext_flags);
if (ret < 0) {
mlog_errno(ret);
ocfs2_inode_unlock(inode, 0);
goto clean_orphan;
}
@ -788,9 +913,11 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
ret = blkdev_issue_zeroout(osb->sb->s_bdev,
p_cpos << (osb->s_clustersize_bits - 9),
zero_len >> 9, GFP_KERNEL, false);
zero_len_head >> 9, GFP_NOFS, false);
if (ret < 0)
mlog_errno(ret);
ocfs2_inode_unlock(inode, 0);
}
clean_orphan:

42
fs/ocfs2/cluster/heartbeat.c
View File

@ -1312,7 +1312,9 @@ static int o2hb_debug_init(void)
int ret = -ENOMEM;
o2hb_debug_dir = debugfs_create_dir(O2HB_DEBUG_DIR, NULL);
if (!o2hb_debug_dir) {
if (IS_ERR_OR_NULL(o2hb_debug_dir)) {
ret = o2hb_debug_dir ?
PTR_ERR(o2hb_debug_dir) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -1325,7 +1327,9 @@ static int o2hb_debug_init(void)
sizeof(o2hb_live_node_bitmap),
O2NM_MAX_NODES,
o2hb_live_node_bitmap);
if (!o2hb_debug_livenodes) {
if (IS_ERR_OR_NULL(o2hb_debug_livenodes)) {
ret = o2hb_debug_livenodes ?
PTR_ERR(o2hb_debug_livenodes) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -1338,7 +1342,9 @@ static int o2hb_debug_init(void)
sizeof(o2hb_live_region_bitmap),
O2NM_MAX_REGIONS,
o2hb_live_region_bitmap);
if (!o2hb_debug_liveregions) {
if (IS_ERR_OR_NULL(o2hb_debug_liveregions)) {
ret = o2hb_debug_liveregions ?
PTR_ERR(o2hb_debug_liveregions) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -1352,7 +1358,9 @@ static int o2hb_debug_init(void)
sizeof(o2hb_quorum_region_bitmap),
O2NM_MAX_REGIONS,
o2hb_quorum_region_bitmap);
if (!o2hb_debug_quorumregions) {
if (IS_ERR_OR_NULL(o2hb_debug_quorumregions)) {
ret = o2hb_debug_quorumregions ?
PTR_ERR(o2hb_debug_quorumregions) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -1366,7 +1374,9 @@ static int o2hb_debug_init(void)
sizeof(o2hb_failed_region_bitmap),
O2NM_MAX_REGIONS,
o2hb_failed_region_bitmap);
if (!o2hb_debug_failedregions) {
if (IS_ERR_OR_NULL(o2hb_debug_failedregions)) {
ret = o2hb_debug_failedregions ?
PTR_ERR(o2hb_debug_failedregions) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -2000,7 +2010,8 @@ static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
reg->hr_debug_dir =
debugfs_create_dir(config_item_name(&reg->hr_item), dir);
if (!reg->hr_debug_dir) {
if (IS_ERR_OR_NULL(reg->hr_debug_dir)) {
ret = reg->hr_debug_dir ? PTR_ERR(reg->hr_debug_dir) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -2013,7 +2024,9 @@ static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
O2HB_DB_TYPE_REGION_LIVENODES,
sizeof(reg->hr_live_node_bitmap),
O2NM_MAX_NODES, reg);
if (!reg->hr_debug_livenodes) {
if (IS_ERR_OR_NULL(reg->hr_debug_livenodes)) {
ret = reg->hr_debug_livenodes ?
PTR_ERR(reg->hr_debug_livenodes) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -2025,7 +2038,9 @@ static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
sizeof(*(reg->hr_db_regnum)),
O2HB_DB_TYPE_REGION_NUMBER,
0, O2NM_MAX_NODES, reg);
if (!reg->hr_debug_regnum) {
if (IS_ERR_OR_NULL(reg->hr_debug_regnum)) {
ret = reg->hr_debug_regnum ?
PTR_ERR(reg->hr_debug_regnum) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -2037,7 +2052,9 @@ static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
sizeof(*(reg->hr_db_elapsed_time)),
O2HB_DB_TYPE_REGION_ELAPSED_TIME,
0, 0, reg);
if (!reg->hr_debug_elapsed_time) {
if (IS_ERR_OR_NULL(reg->hr_debug_elapsed_time)) {
ret = reg->hr_debug_elapsed_time ?
PTR_ERR(reg->hr_debug_elapsed_time) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
@ -2049,13 +2066,16 @@ static int o2hb_debug_region_init(struct o2hb_region *reg, struct dentry *dir)
sizeof(*(reg->hr_db_pinned)),
O2HB_DB_TYPE_REGION_PINNED,
0, 0, reg);
if (!reg->hr_debug_pinned) {
if (IS_ERR_OR_NULL(reg->hr_debug_pinned)) {
ret = reg->hr_debug_pinned ?
PTR_ERR(reg->hr_debug_pinned) : -ENOMEM;
mlog_errno(ret);
goto bail;
}
ret = 0;
return 0;
bail:
debugfs_remove_recursive(reg->hr_debug_dir);
return ret;
}

5
fs/ocfs2/cluster/masklog.h
View File

@ -196,13 +196,14 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
} \
} while (0)
#define mlog_errno(st) do { \
#define mlog_errno(st) ({ \
int _st = (st); \
if (_st != -ERESTARTSYS && _st != -EINTR && \
_st != AOP_TRUNCATED_PAGE && _st != -ENOSPC && \
_st != -EDQUOT) \
mlog(ML_ERROR, "status = %lld\n", (long long)_st); \
} while (0)
_st; \
})
#define mlog_bug_on_msg(cond, fmt, args...) do { \
if (cond) { \

15
fs/ocfs2/dir.c
View File

@ -18,7 +18,7 @@
*
* linux/fs/minix/dir.c
*
* Copyright (C) 1991, 1992 Linux Torvalds
* Copyright (C) 1991, 1992 Linus Torvalds
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
@ -2047,22 +2047,19 @@ int ocfs2_check_dir_for_entry(struct inode *dir,
const char *name,
int namelen)
{
int ret;
int ret = 0;
struct ocfs2_dir_lookup_result lookup = { NULL, };
trace_ocfs2_check_dir_for_entry(
(unsigned long long)OCFS2_I(dir)->ip_blkno, namelen, name);
ret = -EEXIST;
if (ocfs2_find_entry(name, namelen, dir, &lookup) == 0)
goto bail;
if (ocfs2_find_entry(name, namelen, dir, &lookup) == 0) {
ret = -EEXIST;
mlog_errno(ret);
}
ret = 0;
bail:
ocfs2_free_dir_lookup_result(&lookup);
if (ret)
mlog_errno(ret);
return ret;
}

7
fs/ocfs2/dlmglue.c
View File

@ -1391,6 +1391,11 @@ static int __ocfs2_cluster_lock(struct ocfs2_super *osb,
int noqueue_attempted = 0;
int dlm_locked = 0;
if (!(lockres->l_flags & OCFS2_LOCK_INITIALIZED)) {
mlog_errno(-EINVAL);
return -EINVAL;
}
ocfs2_init_mask_waiter(&mw);
if (lockres->l_ops->flags & LOCK_TYPE_USES_LVB)
@ -2954,7 +2959,7 @@ static int ocfs2_dlm_init_debug(struct ocfs2_super *osb)
osb->osb_debug_root,
osb,
&ocfs2_dlm_debug_fops);
if (!dlm_debug->d_locking_state) {
if (IS_ERR_OR_NULL(dlm_debug->d_locking_state)) {
ret = -EINVAL;
mlog(ML_ERROR,
"Unable to create locking state debugfs file.\n");

2
fs/ocfs2/export.c
View File

@ -82,7 +82,6 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
}
status = ocfs2_test_inode_bit(osb, blkno, &set);
trace_ocfs2_get_dentry_test_bit(status, set);
if (status < 0) {
if (status == -EINVAL) {
/*
@ -96,6 +95,7 @@ static struct dentry *ocfs2_get_dentry(struct super_block *sb,
goto unlock_nfs_sync;
}
trace_ocfs2_get_dentry_test_bit(status, set);
/* If the inode allocator bit is clear, this inode must be stale */
if (!set) {
status = -ESTALE;

4
fs/ocfs2/inode.c
View File

@ -624,7 +624,7 @@ static int ocfs2_remove_inode(struct inode *inode,
ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE,
le16_to_cpu(di->i_suballoc_slot));
if (!inode_alloc_inode) {
status = -EEXIST;
status = -ENOENT;
mlog_errno(status);
goto bail;
}
@ -742,7 +742,7 @@ static int ocfs2_wipe_inode(struct inode *inode,
ORPHAN_DIR_SYSTEM_INODE,
orphaned_slot);
if (!orphan_dir_inode) {
status = -EEXIST;
status = -ENOENT;
mlog_errno(status);
goto bail;
}

4
fs/ocfs2/localalloc.c
View File

@ -666,7 +666,7 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
if (le32_to_cpu(alloc->id1.bitmap1.i_used) !=
ocfs2_local_alloc_count_bits(alloc)) {
ocfs2_error(osb->sb, "local alloc inode %llu says it has "
"%u free bits, but a count shows %u",
"%u used bits, but a count shows %u",
(unsigned long long)le64_to_cpu(alloc->i_blkno),
le32_to_cpu(alloc->id1.bitmap1.i_used),
ocfs2_local_alloc_count_bits(alloc));
@ -839,7 +839,7 @@ static int ocfs2_local_alloc_find_clear_bits(struct ocfs2_super *osb,
u32 *numbits,
struct ocfs2_alloc_reservation *resv)
{
int numfound, bitoff, left, startoff, lastzero;
int numfound = 0, bitoff, left, startoff, lastzero;
int local_resv = 0;
struct ocfs2_alloc_reservation r;
void *bitmap = NULL;

6
fs/ocfs2/namei.c
View File

@ -2322,10 +2322,10 @@ int ocfs2_orphan_del(struct ocfs2_super *osb,
trace_ocfs2_orphan_del(
(unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno,
name, namelen);
name, strlen(name));
/* find it's spot in the orphan directory */
status = ocfs2_find_entry(name, namelen, orphan_dir_inode,
status = ocfs2_find_entry(name, strlen(name), orphan_dir_inode,
&lookup);
if (status) {
mlog_errno(status);
@ -2808,7 +2808,7 @@ int ocfs2_mv_orphaned_inode_to_new(struct inode *dir,
ORPHAN_DIR_SYSTEM_INODE,
osb->slot_num);
if (!orphan_dir_inode) {
status = -EEXIST;
status = -ENOENT;
mlog_errno(status);
goto leave;
}

2
fs/ocfs2/refcounttree.c
View File

@ -4276,7 +4276,7 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir,
error = posix_acl_create(dir, &mode, &default_acl, &acl);
if (error) {
mlog_errno(error);
goto out;
return error;
}
error = ocfs2_create_inode_in_orphan(dir, mode,

4
fs/ocfs2/slot_map.c
View File

@ -427,7 +427,7 @@ int ocfs2_init_slot_info(struct ocfs2_super *osb)
if (!si) {
status = -ENOMEM;
mlog_errno(status);
goto bail;
return status;
}
si->si_extended = ocfs2_uses_extended_slot_map(osb);
@ -452,7 +452,7 @@ int ocfs2_init_slot_info(struct ocfs2_super *osb)
osb->slot_info = (struct ocfs2_slot_info *)si;
bail:
if (status < 0 && si)
if (status < 0)
__ocfs2_free_slot_info(si);
return status;

2
fs/ocfs2/stack_o2cb.c
View File

@ -295,7 +295,7 @@ static int o2cb_cluster_check(void)
set_bit(node_num, netmap);
if (!memcmp(hbmap, netmap, sizeof(hbmap)))
return 0;
if (i < O2CB_MAP_STABILIZE_COUNT)
if (i < O2CB_MAP_STABILIZE_COUNT - 1)
msleep(1000);
}

8
fs/ocfs2/stack_user.c
View File

@ -1004,10 +1004,8 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
BUG_ON(conn == NULL);
lc = kzalloc(sizeof(struct ocfs2_live_connection), GFP_KERNEL);
if (!lc) {
rc = -ENOMEM;
goto out;
}
if (!lc)
return -ENOMEM;
init_waitqueue_head(&lc->oc_wait);
init_completion(&lc->oc_sync_wait);
@ -1063,7 +1061,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn)
}
out:
if (rc && lc)
if (rc)
kfree(lc);
return rc;
}

2
fs/ocfs2/suballoc.c
View File

@ -2499,6 +2499,8 @@ static int _ocfs2_free_suballoc_bits(handle_t *handle,
alloc_bh, OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
ocfs2_block_group_set_bits(handle, alloc_inode, group, group_bh,
start_bit, count);
goto bail;
}

46
fs/ocfs2/super.c
View File

@ -1112,7 +1112,7 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
ocfs2_debugfs_root);
if (!osb->osb_debug_root) {
if (IS_ERR_OR_NULL(osb->osb_debug_root)) {
status = -EINVAL;
mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
goto read_super_error;
@ -1122,7 +1122,7 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
osb->osb_debug_root,
osb,
&ocfs2_osb_debug_fops);
if (!osb->osb_ctxt) {
if (IS_ERR_OR_NULL(osb->osb_ctxt)) {
status = -EINVAL;
mlog_errno(status);
goto read_super_error;
@ -1606,8 +1606,9 @@ static int __init ocfs2_init(void)
}
ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
if (!ocfs2_debugfs_root) {
status = -ENOMEM;
if (IS_ERR_OR_NULL(ocfs2_debugfs_root)) {
status = ocfs2_debugfs_root ?
PTR_ERR(ocfs2_debugfs_root) : -ENOMEM;
mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
goto out4;
}
@ -2069,6 +2070,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
memcpy(sb->s_uuid, di->id2.i_super.s_uuid,
sizeof(di->id2.i_super.s_uuid));
osb->osb_dx_mask = (1 << (cbits - bbits)) - 1;
@ -2333,7 +2336,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
mlog_errno(status);
goto bail;
}
cleancache_init_shared_fs((char *)&di->id2.i_super.s_uuid, sb);
cleancache_init_shared_fs(sb);
bail:
return status;
@ -2563,22 +2566,22 @@ static void ocfs2_handle_error(struct super_block *sb)
ocfs2_set_ro_flag(osb, 0);
}
static char error_buf[1024];
void __ocfs2_error(struct super_block *sb,
const char *function,
const char *fmt, ...)
void __ocfs2_error(struct super_block *sb, const char *function,
const char *fmt, ...)
{
struct va_format vaf;
va_list args;
va_start(args, fmt);
vsnprintf(error_buf, sizeof(error_buf), fmt, args);
va_end(args);
vaf.fmt = fmt;
vaf.va = &args;
/* Not using mlog here because we want to show the actual
* function the error came from. */
printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n",
sb->s_id, function, error_buf);
printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV\n",
sb->s_id, function, &vaf);
va_end(args);
ocfs2_handle_error(sb);
}
@ -2586,18 +2589,21 @@ void __ocfs2_error(struct super_block *sb,
/* Handle critical errors. This is intentionally more drastic than
* ocfs2_handle_error, so we only use for things like journal errors,
* etc. */
void __ocfs2_abort(struct super_block* sb,
const char *function,
void __ocfs2_abort(struct super_block *sb, const char *function,
const char *fmt, ...)
{
struct va_format vaf;
va_list args;
va_start(args, fmt);
vsnprintf(error_buf, sizeof(error_buf), fmt, args);
va_end(args);
printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n",
sb->s_id, function, error_buf);
vaf.fmt = fmt;
vaf.va = &args;
printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV\n",
sb->s_id, function, &vaf);
va_end(args);
/* We don't have the cluster support yet to go straight to
* hard readonly in here. Until then, we want to keep

8
fs/ocfs2/xattr.c
View File

@ -1238,6 +1238,10 @@ static int ocfs2_xattr_block_get(struct inode *inode,
i,
&block_off,
&name_offset);
if (ret) {
mlog_errno(ret);
goto cleanup;
}
xs->base = bucket_block(xs->bucket, block_off);
}
if (ocfs2_xattr_is_local(xs->here)) {
@ -5665,6 +5669,10 @@ static int ocfs2_delete_xattr_in_bucket(struct inode *inode,
ret = ocfs2_get_xattr_tree_value_root(inode->i_sb, bucket,
i, &xv, NULL);
if (ret) {
mlog_errno(ret);
break;
}
ret = ocfs2_lock_xattr_remove_allocators(inode, xv,
args->ref_ci,

2
fs/super.c
View File

@ -224,7 +224,7 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
s->s_maxbytes = MAX_NON_LFS;
s->s_op = &default_op;
s->s_time_gran = 1000000000;
s->cleancache_poolid = -1;
s->cleancache_poolid = CLEANCACHE_NO_POOL;
s->s_shrink.seeks = DEFAULT_SEEKS;
s->s_shrink.scan_objects = super_cache_scan;

30
include/asm-generic/pgtable.h
View File

@ -6,6 +6,12 @@
#include <linux/mm_types.h>
#include <linux/bug.h>
#include <linux/errno.h>
#if 4 - defined(__PAGETABLE_PUD_FOLDED) - defined(__PAGETABLE_PMD_FOLDED) != \
CONFIG_PGTABLE_LEVELS
#error CONFIG_PGTABLE_LEVELS is not consistent with __PAGETABLE_{PUD,PMD}_FOLDED
#endif
/*
* On almost all architectures and configurations, 0 can be used as the
@ -691,6 +697,30 @@ static inline int pmd_protnone(pmd_t pmd)
#endif /* CONFIG_MMU */
#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot);
int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot);
int pud_clear_huge(pud_t *pud);
int pmd_clear_huge(pmd_t *pmd);
#else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */
static inline int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
{
return 0;
}
static inline int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
{
return 0;
}
static inline int pud_clear_huge(pud_t *pud)
{
return 0;
}
static inline int pmd_clear_huge(pmd_t *pmd)
{
return 0;
}
#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */
#endif /* !__ASSEMBLY__ */
#ifndef io_remap_pfn_range

13
include/linux/cleancache.h
View File

@ -5,6 +5,10 @@
#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
/*
@ -33,10 +37,9 @@ struct cleancache_ops {
void (*invalidate_fs)(int);
};
extern struct cleancache_ops *
cleancache_register_ops(struct cleancache_ops *ops);
extern int cleancache_register_ops(struct cleancache_ops *ops);
extern void __cleancache_init_fs(struct super_block *);
extern void __cleancache_init_shared_fs(char *, 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 *);
@ -78,10 +81,10 @@ static inline void cleancache_init_fs(struct super_block *sb)
__cleancache_init_fs(sb);
}
static inline void cleancache_init_shared_fs(char *uuid, struct super_block *sb)
static inline void cleancache_init_shared_fs(struct super_block *sb)
{
if (cleancache_enabled)
__cleancache_init_shared_fs(uuid, sb);
__cleancache_init_shared_fs(sb);
}
static inline int cleancache_get_page(struct page *page)

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