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| author | Cyrill Gorcunov | 2013-09-11 23:22:47 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2013-09-12 00:58:06 +0200 |
| commit | fa0f281cf9de8e6877e6536f18a3fc77368df64d (patch) | |
| tree | f542d0f6b19d56f4bfddca7d971bac6c00fca63b /mm/page_alloc.c | |
| parent | mm/page-writeback.c: add strictlimit feature (diff) | |
| download | kernel-qcow2-linux-fa0f281cf9de8e6877e6536f18a3fc77368df64d.tar.gz kernel-qcow2-linux-fa0f281cf9de8e6877e6536f18a3fc77368df64d.tar.xz kernel-qcow2-linux-fa0f281cf9de8e6877e6536f18a3fc77368df64d.zip | |
mm: make sure _PAGE_SWP_SOFT_DIRTY bit is not set on present pte
_PAGE_SOFT_DIRTY bit should never be set on present pte so add VM_BUG_ON
to catch any potential future abuse.
Also add a comment on _PAGE_SWP_SOFT_DIRTY definition explaining scope of
its usage.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions