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authorNick Piggin <npiggin@suse.de>2006-09-25 23:31:35 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:49 -0700
commitda6052f7b33abe55fbfd7d2213815f58c00a88d4 (patch)
treea2deda88ae8e9fc33d9a0ce80f42fde2c55c7bbc /mm
parente5ac9c5aec7c4bc57fa93f2d37d760a22cb7bd33 (diff)
[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')
-rw-r--r--mm/filemap.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index d5af1cab426..afcdc72b5e9 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;