android_kernel_samsung_msm8976/arch/ia64
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
..
configs [IA64] defconfig: Remove CONFIG_MISC_DEVICES 2012-08-20 13:04:29 -07:00
dig Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
hp TTY: use tty_port_link_device 2012-08-13 16:50:19 -07:00
include mm: hugetlb: add arch hook for clearing page flags before entering pool 2012-10-09 16:22:24 +09:00
kernel mm: kill vma flag VM_RESERVED and mm->reserved_vm counter 2012-10-09 16:22:19 +09:00
kvm KVM: split kvm_arch_flush_shadow 2012-09-06 16:37:25 +03:00
lib Fix common misspellings 2011-03-31 11:26:23 -03:00
mm readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
oprofile Disintegrate asm/system.h for IA64 2012-03-28 18:30:02 +01:00
pci Merge branch 'pci/yinghai-misc' into next 2012-09-24 17:24:11 -06:00
scripts
sn ia64/PCI: Use hotplug-safe pci_get_domain_bus_and_slot() 2012-09-12 14:10:33 -06:00
uv ia64: change to new flag variables 2011-03-17 14:02:56 +01:00
xen sections: fix section conflicts in arch/ia64 2012-10-06 03:04:39 +09:00
install.sh
Kconfig cputime: Generalize CONFIG_VIRT_CPU_ACCOUNTING 2012-08-17 16:31:08 +02:00
Kconfig.debug
Makefile Merge commit 'v2.6.35' into kbuild/kbuild 2010-08-04 13:59:13 +02:00
module.lds