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| author | Hua Zhong <hzhong@gmail.com> | 2006-05-15 18:44:22 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-15 20:20:56 +0200 |
| commit | e6333fd4ddf7a583480017f535b9ea53c116ab81 (patch) | |
| tree | df1aeae28ce51103a0c9eda8f7d40e463297b2ef /arch | |
| parent | [PATCH] v9fs: signal handling fixes (diff) | |
| download | linux-e6333fd4ddf7a583480017f535b9ea53c116ab81.tar.xz linux-e6333fd4ddf7a583480017f535b9ea53c116ab81.zip | |
[PATCH] fix can_share_swap_page() when !CONFIG_SWAP
can_share_swap_page() is used to check if the page has the last reference.
This avoids allocating a new page for COW if it's the last page.
However, if CONFIG_SWAP is not set, can_share_swap_page() is defined as 0,
thus always causes a copy for the last COW page. The below simple patch
fixes it.
Signed-off-by: Hua Zhong <hzhong@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions