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author | Hugh Dickins <hugh.dickins@tiscali.co.uk> | 2009-12-14 17:59:16 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-15 08:53:18 -0800 |
commit | 93d17715a5b960d34220f2edba3e6cee9b5b1c58 (patch) | |
tree | 9ab08ff4169464bf5b8d86c8082296fd6e3d069b /MAINTAINERS | |
parent | 338fde90930eaa02f6f394daa23d35a410af5852 (diff) | |
download | linux-3.10-93d17715a5b960d34220f2edba3e6cee9b5b1c58.tar.gz linux-3.10-93d17715a5b960d34220f2edba3e6cee9b5b1c58.tar.bz2 linux-3.10-93d17715a5b960d34220f2edba3e6cee9b5b1c58.zip |
ksm: three remove_rmap_item_from_tree cleanups
1. remove_rmap_item_from_tree() is called as a precaution from
various places: don't dirty the rmap_item cacheline unnecessarily,
just mask the flags out of the address when they have been set.
2. First get_next_rmap_item() removes an unstable rmap_item from its tree,
then shortly afterwards cmp_and_merge_page() removes a stable rmap_item
from its tree: it's easier just to do both at once (but definitely keep
the BUG_ON(age > 1) which guards against a future omission).
3. When cmp_and_merge_page() moves an rmap_item from unstable to stable
tree, it does its own rb_erase() and accounting: that's better
expressed by remove_rmap_item_from_tree().
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Izik Eidus <ieidus@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 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions