diff options
author | Michel Lespinasse <walken@google.com> | 2011-02-10 15:01:33 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-02-11 16:12:20 -0800 |
commit | 419d8c96dbfa558f00e623023917d0a5afc46129 (patch) | |
tree | 74882b1ed7340d3d0e448b343c52fd12969ea518 /mm/huge_memory.c | |
parent | e15f8c01af924e611bc7be1e45449c4a74e5dfdd (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/huge_memory.c')
0 files changed, 0 insertions, 0 deletions