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| author | Nick Piggin <npiggin@suse.de> | 2006-09-25 23:31:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:48:49 -0700 |
| commit | da6052f7b33abe55fbfd7d2213815f58c00a88d4 (patch) | |
| tree | a2deda88ae8e9fc33d9a0ce80f42fde2c55c7bbc /mm/filemap.c | |
| parent | e5ac9c5aec7c4bc57fa93f2d37d760a22cb7bd33 (diff) | |
| download | lwn-da6052f7b33abe55fbfd7d2213815f58c00a88d4.tar.gz lwn-da6052f7b33abe55fbfd7d2213815f58c00a88d4.zip | |
[PATCH] update some mm/ comments
Let's try to keep mm/ comments more useful and up to date. This is a start.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index d5af1cab4268..afcdc72b5e90 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -599,8 +599,8 @@ void fastcall __lock_page_nosync(struct page *page) * @mapping: the address_space to search * @offset: the page index * - * A rather lightweight function, finding and getting a reference to a - * hashed page atomically. + * Is there a pagecache struct page at the given (mapping, offset) tuple? + * If yes, increment its refcount and return it; if no, return NULL. */ struct page * find_get_page(struct address_space *mapping, unsigned long offset) { @@ -987,7 +987,7 @@ page_not_up_to_date: /* Get exclusive access to the page ... */ lock_page(page); - /* Did it get unhashed before we got the lock? */ + /* Did it get truncated before we got the lock? */ if (!page->mapping) { unlock_page(page); page_cache_release(page); @@ -1627,7 +1627,7 @@ no_cached_page: page_not_uptodate: lock_page(page); - /* Did it get unhashed while we waited for it? */ + /* Did it get truncated while we waited for it? */ if (!page->mapping) { unlock_page(page); goto err; |