path: root/fs/autofs4/expire.c
diff options
authorDavid Jeffery <djeffery@redhat.com>2013-05-06 13:49:30 +0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-06 13:06:59 -0700
commitce8a5dbdf9e709bdaf4618d7ef8cceb91e8adc69 (patch)
tree39b64a674fd616c0e50f07d3d042dc71e2c4d380 /fs/autofs4/expire.c
parentautofs - fix sparse warning for autofs4_d_manage() (diff)
autofs - remove autofs dentry mount check
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 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/autofs4/expire.c')
1 files changed, 0 insertions, 9 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 01443ce43ee7..13ddec92341c 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 */