Al Viro 19a1c4092e fix the struct mount leak in umount_tree()
We need to drop everything we remove from the tree, whether
mnt_has_parent() is true or not.  Usually the bug manifests as a slow
memory leak (leaked struct mount for initramfs); it becomes much more
visible in mount_subtree() users, such as btrfs.  There we leak
a struct mount for btrfs superblock being mounted, which prevents
fs shutdown on subsequent umount.

Fixes: 56cbb429d911 ("switch the remnants of releasing the mountpoint away from fs_pin")
Reported-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-07-26 07:59:06 -04:00
..
2019-07-12 17:37:53 -07:00
2019-07-12 16:54:37 -07:00
2019-07-12 16:54:37 -07:00
2019-07-19 11:38:12 -07:00
2019-07-03 17:52:09 -04:00
2019-07-12 16:54:37 -07:00
2019-06-21 09:58:42 -07:00
\n
2019-07-10 20:27:07 -07:00
\n
2019-07-10 20:09:17 -07:00
\n
2019-07-10 20:27:07 -07:00
2019-07-18 11:18:00 -07:00
2019-07-15 21:20:52 -07:00
2019-05-21 08:23:41 +01:00
2019-07-19 11:38:12 -07:00
2019-04-08 18:21:02 -05:00
2019-03-08 14:48:40 -08:00
2019-07-12 16:54:37 -07:00
2019-07-10 21:22:43 -07:00
2019-02-07 16:38:35 +01:00
2019-07-04 22:01:58 -04:00