tree c48f758a0b66ec32d15e4ff5a42334a72889a1b5
parent a937cca270c544c4319572b57b196b2251b07dd2
author Al Viro <viro@ZenIV.linux.org.uk> 1410551764 +0100
committer Steven Whitehouse <swhiteho@redhat.com> 1410551935 +0100

GFS2: fix d_splice_alias() misuses

Callers of d_splice_alias(dentry, inode) don't need iput(), neither
on success nor on failure.  Either the reference to inode is stored
in a previously negative dentry, or it's dropped.  In either case
inode reference the caller used to hold is consumed.

__gfs2_lookup() does iput() in case when d_splice_alias() has failed.
Double iput() if we ever hit that.  And gfs2_create_inode() ends up
not only with double iput(), but with link count dropped to zero - on
an inode it has just found in directory.

Cc: stable@vger.kernel.org # v3.14+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>