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| author | Cyrill Gorcunov <gorcunov@gmail.com> | 2014-08-06 16:07:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-06 18:01:20 -0700 |
| commit | 9aed8614af5a05cdaa32a0b78b0f1a424754a958 (patch) | |
| tree | e2e790fb6b86e118757b4c9124323b5fcaf6c102 /net/sysctl_net.c | |
| parent | f0093ede9b726ccb1876d43574f5b45c79940aca (diff) | |
| download | kernel_replicant_linux-9aed8614af5a05cdaa32a0b78b0f1a424754a958.tar.gz kernel_replicant_linux-9aed8614af5a05cdaa32a0b78b0f1a424754a958.tar.bz2 kernel_replicant_linux-9aed8614af5a05cdaa32a0b78b0f1a424754a958.zip | |
mm/memory.c: don't forget to set softdirty on file mapped fault
Otherwise we may not notice that pte was softdirty because
pte_mksoft_dirty helper _returns_ new pte but doesn't modify the
argument.
In case if page fault happend on dirty filemapping the newly created pte
may loose softdirty bit thus if a userspace program is tracking memory
changes with help of a memory tracker (CONFIG_MEM_SOFT_DIRTY) it might
miss modification of a memory page (which in worts case may lead to data
inconsistency).
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/sysctl_net.c')
0 files changed, 0 insertions, 0 deletions