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authorJan Kara <jack@suse.cz>2006-04-23 17:10:44 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2006-05-01 12:03:43 -0700
commit89d4fdf423aa5d02e0d5f79ceba238a35bf23aff (patch)
tree1833d69afaf69f5417bb12edb2bff67bc8be473b /fs
parent692c0509fd0719406f8f781d9a9f2e19aa6b7c0a (diff)
[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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
-rw-r--r--fs/reiserfs/xattr_acl.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
index ab8894c3b9e5..9df778affcfb 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;