The patch below does not apply to the 3.16-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f5be3e29127aec8c87f883aadadff337f8c2cfd7 Mon Sep 17 00:00:00 2001 From: Al Viro <[email protected]> Date: Sat, 13 Sep 2014 21:50:45 -0400 Subject: [PATCH] fix bogus read_seqretry() checks introduced in b37199e read_seqretry() returns true on mismatch, not on match... Cc: [email protected] # 3.15+ Signed-off-by: Al Viro <[email protected]> diff --git a/fs/namei.c b/fs/namei.c index a996bb48dfab..3d1dc745f9d8 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; -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
