From: Al Viro Date: Sun, 14 Sep 2014 01:50:45 +0000 (-0400) Subject: fix bogus read_seqretry() checks introduced in b37199e X-Git-Tag: v3.17-rc5~1^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f5be3e29127aec8c87f883aadadff337f8c2cfd7;p=profile%2Fcommon%2Fplatform%2Fkernel%2Flinux-artik7.git fix bogus read_seqretry() checks introduced in b37199e read_seqretry() returns true on mismatch, not on match... Cc: stable@vger.kernel.org # 3.15+ Signed-off-by: Al Viro --- diff --git a/fs/namei.c b/fs/namei.c index a996bb4..3d1dc74 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1137,7 +1137,7 @@ static bool __follow_mount_rcu(struct nameidata *nd, struct path *path, */ *inode = path->dentry->d_inode; } - return read_seqretry(&mount_lock, nd->m_seq) && + return !read_seqretry(&mount_lock, nd->m_seq) && !(path->dentry->d_flags & DCACHE_NEED_AUTOMOUNT); } @@ -1174,7 +1174,7 @@ static int follow_dotdot_rcu(struct nameidata *nd) nd->path.mnt = &mounted->mnt; nd->path.dentry = mounted->mnt.mnt_root; nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq); - if (!read_seqretry(&mount_lock, nd->m_seq)) + if (read_seqretry(&mount_lock, nd->m_seq)) goto failed; } nd->inode = nd->path.dentry->d_inode;