diff options
| author | Nick Piggin <npiggin@suse.de> | 2006-01-18 17:42:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-18 19:20:17 -0800 |
| commit | 053837fce7aa79025ed57656855df09f80175527 (patch) | |
| tree | 05d7615894131a368fc4943f641b11acdd2ae694 /include/linux/swap.h | |
| parent | e236a166b2bc437769a9b8b5d19186a3761bde48 (diff) | |
[PATCH] mm: migration page refcounting fix
Migration code currently does not take a reference to target page
properly, so between unlocking the pte and trying to take a new
reference to the page with isolate_lru_page, anything could happen to
it.
Fix this by holding the pte lock until we get a chance to elevate the
refcount.
Other small cleanups while we're here.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/swap.h')
| -rw-r--r-- | include/linux/swap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h index e92054d6530..d01f7efb0f2 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -167,6 +167,7 @@ extern void FASTCALL(lru_cache_add_active(struct page *)); extern void FASTCALL(activate_page(struct page *)); extern void FASTCALL(mark_page_accessed(struct page *)); extern void lru_add_drain(void); +extern int lru_add_drain_all(void); extern int rotate_reclaimable_page(struct page *page); extern void swap_setup(void); |