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authorAndrea Arcangeli <aarcange@redhat.com>2010-09-22 13:05:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-09-22 17:22:39 -0700
commita247c3a97a0216b18a46243eda26081f1928ec37 (patch)
treeecf6996b252e9cc818d170eba4b8eb25aac3d596 /kernel/sys.c
parentdf08cdc7ef606509debe7677c439be0ca48790e4 (diff)
downloadop-kernel-dev-a247c3a97a0216b18a46243eda26081f1928ec37.zip
op-kernel-dev-a247c3a97a0216b18a46243eda26081f1928ec37.tar.gz
rmap: fix walk during fork
The below bug in fork led to the rmap walk finding the parent huge-pmd twice instead of just once, because the anon_vma_chain objects of the child vma still point to the vma->vm_mm of the parent. The patch fixes it by making the rmap walk accurate during fork. It's not a big deal normally but it worth being accurate considering the cost is the same. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Johannes Weiner <jweiner@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sys.c')
0 files changed, 0 insertions, 0 deletions
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