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authorMichel Lespinasse <walken@google.com>2011-02-10 18:01:33 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2011-02-11 19:12:20 -0500
commit419d8c96dbfa558f00e623023917d0a5afc46129 (patch)
tree74882b1ed7340d3d0e448b343c52fd12969ea518 /mm/vmscan.c
parente15f8c01af924e611bc7be1e45449c4a74e5dfdd (diff)
mlock: do not munlock pages in __do_fault()
If the page is going to be written to, __do_page needs to break COW. However, the old page (before breaking COW) was never mapped mapped into the current pte (__do_fault is only called when the pte is not present), so vmscan can't have marked the old page as PageMlocked due to being mapped in __do_fault's VMA. Therefore, __do_fault() does not need to worry about clearing PageMlocked() on the old page. Signed-off-by: Michel Lespinasse <walken@google.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
0 files changed, 0 insertions, 0 deletions