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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-03-23 00:32:49 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-23 01:44:03 +0100 |
| commit | 01d8b20dec5f4019283e244aba50ba86fe6ead6e (patch) | |
| tree | 738a2e675547de61f74d6f4019dd5830c40446dd /.mailmap | |
| parent | mm: move anon_vma ref out from under CONFIG_foo (diff) | |
| download | linux-01d8b20dec5f4019283e244aba50ba86fe6ead6e.tar.xz linux-01d8b20dec5f4019283e244aba50ba86fe6ead6e.zip | |
mm: simplify anon_vma refcounts
This patch changes the anon_vma refcount to be 0 when the object is free.
It does this by adding 1 ref to being in use in the anon_vma structure
(iow. the anon_vma->head list is not empty).
This allows a simpler release scheme without having to check both the
refcount and the list as well as avoids taking a ref for each entry on the
list.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hughd@google.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '.mailmap')
0 files changed, 0 insertions, 0 deletions