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OpenCloudOS-Kernel/arch/powerpc/mm
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Shaohua Li 45cac65b0f readahead: fault retry breaks mmap file read random detection 
.fault now can retry.  The retry can break state machine of .fault.  In
filemap_fault, if page is miss, ra->mmap_miss is increased.  In the second
try, since the page is in page cache now, ra->mmap_miss is decreased.  And
these are done in one fault, so we can't detect random mmap file access.

Add a new flag to indicate .fault is tried once.  In the second try, skip
ra->mmap_miss decreasing.  The filemap_fault state machine is ok with it.

I only tested x86, didn't test other archs, but looks the change for other
archs is obvious, but who knows :)

Signed-off-by: Shaohua Li <shaohua.li@fusionio.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2012-10-09 16:22:47 +09:00
..
40x_mmu.c memblock: Remove rmo_size, burry it in arch/powerpc where it belongs 2010-08-05 12:56:08 +10:00
44x_mmu.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
Makefile powerpc: Split ICSWX ACOP and PID processing 2011-11-25 14:11:27 +11:00
dma-noncoherent.c powerpc: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:14 +08:00
fault.c readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
fsl_booke_mmu.c powerpc/fsl-booke: Fixup calc_cam_sz to support MMU v2 2012-03-15 12:12:19 -05:00
gup.c powerpc: remove superfluous PageTail checks on the pte gup_fast 2011-11-02 16:06:57 -07:00
hash_low_32.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
hash_low_64.S powerpc/mm: Convert virtual address to vpn 2012-09-17 16:31:49 +10:00
hash_native_64.c powerpc: Remove tlb batching hack for nighthawk 2012-09-27 12:51:06 +10:00
hash_utils_64.c powerpc/mm: Increase the slice range to 64TB 2012-09-17 16:31:50 +10:00
highmem.c mm: fix race in kunmap_atomic() 2010-10-27 18:03:05 -07:00
hugetlbpage-book3e.c powerpc/book3e: Change hugetlb preload to take vma argument 2011-12-07 16:26:24 +11:00
hugetlbpage-hash64.c powerpc/mm: Convert virtual address to vpn 2012-09-17 16:31:49 +10:00
hugetlbpage.c powerpc: fix compile fail in hugetlb cmdline parsing 2012-05-07 16:51:19 -07:00
icswx.c powerpc/icswx: Fix race condition with IPI setting ACOP 2012-03-07 17:06:09 +11:00
icswx.h powerpc/icswx: Fix race condition with IPI setting ACOP 2012-03-07 17:06:09 +11:00
icswx_pid.c powerpc: Split ICSWX ACOP and PID processing 2011-11-25 14:11:27 +11:00
init_32.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
init_64.c powerpc: Remove all includes of <asm/abs_addr.h> 2012-09-05 15:19:33 +10:00
mem.c powerpc/swiotlb: Enable at early stage and disable if not necessary 2012-09-12 14:57:09 -05:00
mmap_64.c powerpc+sparc64/mm: Remove hack in mmap randomize layout 2011-11-28 11:42:09 +11:00
mmu_context_hash32.c powerpc: include export.h for files using EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:30:38 -04:00
mmu_context_hash64.c powerpc/mm: Update VSID allocation documentation 2012-09-17 16:31:53 +10:00
mmu_context_nohash.c powerpc: use clear_tasks_mm_cpumask() 2012-05-31 17:49:29 -07:00
mmu_decl.h powerpc/fsl-booke: Fix setup_initial_memory_limit to not blindly map 2011-10-11 23:30:41 -05:00
numa.c powerpc/vphn: Fix arch_update_cpu_topology() return value 2012-09-05 16:05:19 +10:00
pgtable.c powerpc: Hugetlb for BookE 2011-09-20 09:19:40 +10:00
pgtable_32.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
pgtable_64.c powerpc/mm: Make some of the PGTABLE_RANGE dependency explicit 2012-09-17 16:31:53 +10:00
ppc_mmu_32.c memblock: Remove rmo_size, burry it in arch/powerpc where it belongs 2010-08-05 12:56:08 +10:00
slb.c powerpc: Remove FW_FEATURE ISERIES from arch code 2012-03-21 11:16:11 +11:00
slb_low.S powerpc/mm: Add 64TB support 2012-09-17 16:31:51 +10:00
slice.c powerpc/mm: Make some of the PGTABLE_RANGE dependency explicit 2012-09-17 16:31:53 +10:00
stab.c powerpc/mm: Remove uses of abs_to_virt() and virt_to_abs() 2012-09-05 15:19:31 +10:00
subpage-prot.c powerpc/mm: Match variable types to API 2012-09-10 14:37:31 +10:00
tlb_hash32.c powerpc: include export.h for files using EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:30:38 -04:00
tlb_hash64.c powerpc/mm: Convert virtual address to vpn 2012-09-17 16:31:49 +10:00
tlb_low_64e.S powerpc/booke64: Use SPRG0/3 scratch for bolted TLB miss & crit int 2012-09-05 15:35:52 +10:00
tlb_nohash.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-01-06 17:58:22 -08:00
tlb_nohash_low.S powerpc: Enforce usage of RA 0-R31 where possible 2012-07-10 19:18:35 +10:00