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| author | Nick Piggin <npiggin@suse.de> | 2007-10-21 06:57:41 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-21 08:54:05 -0700 |
| commit | efdc31319d43050a5742fb690b1a4beb68092a94 (patch) | |
| tree | 697e9db6db5675c46d559d8982e34a1f8df4f3d1 /fs | |
| parent | cfa76f024f7c9e65169425804e5b32e71f66d0ee (diff) | |
| download | linux-3.10-efdc31319d43050a5742fb690b1a4beb68092a94.tar.gz linux-3.10-efdc31319d43050a5742fb690b1a4beb68092a94.tar.bz2 linux-3.10-efdc31319d43050a5742fb690b1a4beb68092a94.zip | |
nobh: nobh_write_end fix
This path mustn't have been tested :( I did attempt to exercise it
by injecting failures here, but I suspect PageMappedToDisk may have
been getting in the way. Will need more of a look, although I think
nobh mode is OK for an -rc1 (it shouldn't eat anyone's data).
Commit 03158cd7eb3374843de68421142ca5900df845d9 ("fs: restore nobh")
introcduced a NULL deref. Spotted by the Coverity checker.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/buffer.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 76403b1764c..7249e014819 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2563,7 +2563,7 @@ int nobh_write_end(struct file *file, struct address_space *mapping, struct page *page, void *fsdata) { struct inode *inode = page->mapping->host; - struct buffer_head *head = NULL; + struct buffer_head *head = fsdata; struct buffer_head *bh; if (!PageMappedToDisk(page)) { @@ -2584,7 +2584,6 @@ int nobh_write_end(struct file *file, struct address_space *mapping, unlock_page(page); page_cache_release(page); - head = fsdata; while (head) { bh = head; head = head->b_this_page; |