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btrfs: fix comment its device list mutex not volume lock 

We have killed volume mutex (commit: dccdb07bc9
btrfs: kill btrfs_fs_info::volume_mutex). This a trival one seems to have
escaped.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2019-02-08 15:39:37 +08:00 committed by David Sterba
parent bb58eb9e16
commit 7faad6e25c
1 changed files with 0 additions and 1 deletions
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fs/btrfs/volumes.c
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@ -1129,7 +1129,6 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig)
mutex_lock(&orig->device_list_mutex); mutex_lock(&orig->device_list_mutex);
fs_devices->total_devices = orig->total_devices; fs_devices->total_devices = orig->total_devices;
/* We have held the volume lock, it is safe to get the devices. */
list_for_each_entry(orig_dev, &orig->devices, dev_list) { list_for_each_entry(orig_dev, &orig->devices, dev_list) {
struct rcu_string *name; struct rcu_string *name;