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| author | Younger Liu <liuyiyang@hisense.com> | 2014-01-23 15:53:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 16:36:54 -0800 |
| commit | 2252b62a56601c9e31396da230b4ce792f167fb4 (patch) | |
| tree | 02a0cf2f7ba9a1367d8c13752b67d3819149b921 /fs/logfs/segment.c | |
| parent | a3b25d9b774fbda2e6add28cf792941fd98fa999 (diff) | |
| download | linux-2252b62a56601c9e31396da230b4ce792f167fb4.tar.gz linux-2252b62a56601c9e31396da230b4ce792f167fb4.tar.bz2 linux-2252b62a56601c9e31396da230b4ce792f167fb4.zip | |
logfs: check for the return value after calling find_or_create_page()
In get_mapping_page(), after calling find_or_create_page(), the return
value should be checked.
This patch has been provided:
http://www.spinics.net/lists/linux-fsdevel/msg66948.html but not been
applied now.
Signed-off-by: Younger Liu <liuyiyang@hisense.com>
Cc: Younger Liu <younger.liucn@gmail.com>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Reviewed-by: Prasad Joshi <prasadjoshi.linux@gmail.com>
Cc: Jörn Engel <joern@logfs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/logfs/segment.c')
| -rw-r--r-- | fs/logfs/segment.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/logfs/segment.c b/fs/logfs/segment.c index d448a777166b..7f9b096d8d57 100644 --- a/fs/logfs/segment.c +++ b/fs/logfs/segment.c @@ -62,7 +62,8 @@ static struct page *get_mapping_page(struct super_block *sb, pgoff_t index, page = read_cache_page(mapping, index, filler, sb); else { page = find_or_create_page(mapping, index, GFP_NOFS); - unlock_page(page); + if (page) + unlock_page(page); } return page; } |