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| author | Jan Kara <jack@suse.cz> | 2006-04-22 02:36:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-22 09:19:53 -0700 |
| commit | b9251b823b5e921c894eb135cb6c64abf483f50e (patch) | |
| tree | 4e2c1c24a80693a6b6d2ee0f5369ab21fef5fc16 /fs/reiserfs/xattr_acl.c | |
| parent | 8c4335a87c9785d2102ab23f09393038e1663314 (diff) | |
| download | lwn-b9251b823b5e921c894eb135cb6c64abf483f50e.tar.gz lwn-b9251b823b5e921c894eb135cb6c64abf483f50e.zip | |
[PATCH] Fix reiserfs deadlock
reiserfs_cache_default_acl() should return whether we successfully found
the acl or not. We have to return correct value even if reiserfs_get_acl()
returns error code and not just 0. Otherwise callers such as
reiserfs_mkdir() can unnecessarily lock the xattrs and later functions such
as reiserfs_new_inode() fail to notice that we have already taken the lock
and try to take it again with obvious consequences.
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/reiserfs/xattr_acl.c')
| -rw-r--r-- | fs/reiserfs/xattr_acl.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index 58c418fbca2c..97ae1b92bc47 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -408,8 +408,9 @@ int reiserfs_cache_default_acl(struct inode *inode) acl = reiserfs_get_acl(inode, ACL_TYPE_DEFAULT); reiserfs_read_unlock_xattrs(inode->i_sb); reiserfs_read_unlock_xattr_i(inode); - ret = acl ? 1 : 0; - posix_acl_release(acl); + ret = (acl && !IS_ERR(acl)); + if (ret) + posix_acl_release(acl); } return ret; |