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| author | Hugh Dickins <hugh@veritas.com> | 2005-10-29 18:16:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-29 21:40:41 -0700 |
| commit | c0718806cf955d5eb51ea77bffb5b21d9bba4972 (patch) | |
| tree | bd29659bbff68604127439ec8144230a40772621 /include/linux/rmap.h | |
| parent | 67b02f119df50ffad5a4e9e53ea4c896535862cd (diff) | |
| download | lwn-c0718806cf955d5eb51ea77bffb5b21d9bba4972.tar.gz lwn-c0718806cf955d5eb51ea77bffb5b21d9bba4972.zip | |
[PATCH] mm: rmap with inner ptlock
rmap's page_check_address descend without page_table_lock. First just
pte_offset_map in case there's no pte present worth locking for, then take
page_table_lock for the full check, and pass ptl back to caller in the same
style as pte_offset_map_lock. __xip_unmap, page_referenced_one and
try_to_unmap_one use pte_unmap_unlock. try_to_unmap_cluster also.
page_check_address reformatted to avoid progressive indentation. No use is
made of its one error code, return NULL when it fails.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/rmap.h')
| -rw-r--r-- | include/linux/rmap.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index e80fb7ee6efd..35b30e6c8cf8 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -95,8 +95,8 @@ int try_to_unmap(struct page *); /* * Called from mm/filemap_xip.c to unmap empty zero page */ -pte_t *page_check_address(struct page *, struct mm_struct *, unsigned long); - +pte_t *page_check_address(struct page *, struct mm_struct *, + unsigned long, spinlock_t **); /* * Used by swapoff to help locate where page is expected in vma. |