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| author | David Jeffery <djeffery@redhat.com> | 2013-05-06 13:49:30 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-06 13:06:59 -0700 |
| commit | ce8a5dbdf9e709bdaf4618d7ef8cceb91e8adc69 (patch) | |
| tree | 39b64a674fd616c0e50f07d3d042dc71e2c4d380 | |
| parent | 954829863d3017d1c14600c975f9b92696d36836 (diff) | |
| download | linux-stable-ce8a5dbdf9e709bdaf4618d7ef8cceb91e8adc69.tar.gz linux-stable-ce8a5dbdf9e709bdaf4618d7ef8cceb91e8adc69.tar.bz2 linux-stable-ce8a5dbdf9e709bdaf4618d7ef8cceb91e8adc69.zip | |
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>
| -rw-r--r-- | fs/autofs4/expire.c | 9 |
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 */ |