Messages in this thread Patch in this message | | | Subject | [REPOST PATCH] autofs - remove autofs dentry mount check | From | Ian Kent <> | Date | Mon, 06 May 2013 13:49:30 +0800 |
| |
From: David Jeffery <djeffery@redhat.com>
When checking if an autofs mount point is busy it isn't sufficient to only check if it's a mount point.
For example, if the mount of an offset mountpoint in a tree is denied for this host by its export and the dentry becomes a process working directory the check incorrectly returns the mount as not in use at expire.
This can happen since the default when mounting within a tree is nostrict, which means ingnore mount fails on mounts within the tree and continue. The nostrict option is meant to allow mounting in this case.
Signed-off-by: David Jeffery <djeffery@redhat.com> Signed-off-by: Ian Kent <raven@themaw.net> Cc: stable@vger.kernel.org --- fs/autofs4/expire.c | 9 --------- 1 file changed, 9 deletions(-)
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index 01443ce..13ddec9 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -61,15 +61,6 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry) /* This is an autofs submount, we can't expire it */ if (autofs_type_indirect(sbi->type)) goto done; - - /* - * Otherwise it's an offset mount and we need to check - * if we can umount its mount, if there is one. - */ - if (!d_mountpoint(path.dentry)) { - status = 0; - goto done; - } } /* Update the expiry counter if fs is busy */
| |