diff options
| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-10-26 19:49:53 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-29 10:39:27 -0400 |
| commit | 41e20983fe553b39bc2b00e07c7a379f0c86a4bc (patch) | |
| tree | 685433b37a7ebe5a61ac7315dc8017706227345b /lib/string.c | |
| parent | b76146ed1ae7d7acae1d51f9342e31d00c8d5a12 (diff) | |
vmscan: limit VM_EXEC protection to file pages
It is possible to have !Anon but SwapBacked pages, and some apps could
create huge number of such pages with MAP_SHARED|MAP_ANONYMOUS. These
pages go into the ANON lru list, and hence shall not be protected: we only
care mapped executable files. Failing to do so may trigger OOM.
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/string.c')
0 files changed, 0 insertions, 0 deletions