btrfs: use device_list_mutex when removing stale devices
authorAnand Jain <anand.jain@oracle.com>
Tue, 29 May 2018 09:23:20 +0000 (17:23 +0800)
committerDavid Sterba <dsterba@suse.com>
Mon, 6 Aug 2018 11:12:47 +0000 (13:12 +0200)
commit7bcb8164ad9435068d9bc3b83b8a002c64d63ff6
tree3f29cdf256f0698815243a8c5c653f3c37a542b4
parentfa6d2ae540a200a17bb7ee769f9df22d411c9404
btrfs: use device_list_mutex when removing stale devices

btrfs_free_stale_devices() finds a stale (not opened) device matching
path in the fs_uuid list. We are already under uuid_mutex so when we
check for each fs_devices, hold the device_list_mutex too.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/volumes.c