Commit e17125b5 authored by Anand Jain's avatar Anand Jain Committed by David Sterba
Browse files

btrfs: use sprout device_list_mutex in btrfs_init_devices_late 



On a mounted sprout filesystem, all threads now are using the
sprout::device_list_mutex, and this is the only code using the
seed::device_list_mutex. This patch converts to use the sprouts
fs_info->fs_devices->device_list_mutex.

The same reasoning holds true here, that device delete is holding
the sprout::device_list_mutex.

Signed-off-by: default avatarAnand Jain <anand.jain@oracle.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 2fca0db0

fs/btrfs/volumes.c

+1 −3
Original line number Diff line number Diff line
@@ -7195,16 +7195,14 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info) 
	mutex_lock(&fs_devices->device_list_mutex);

	list_for_each_entry(device, &fs_devices->devices, dev_list)

		device->fs_info = fs_info;

	mutex_unlock(&fs_devices->device_list_mutex);



	list_for_each_entry(seed_devs, &fs_devices->seed_list, seed_list) {

		mutex_lock(&seed_devs->device_list_mutex);

		list_for_each_entry(device, &seed_devs->devices, dev_list)

			device->fs_info = fs_info;

		mutex_unlock(&seed_devs->device_list_mutex);



		seed_devs->fs_info = fs_info;

	}

	mutex_unlock(&fs_devices->device_list_mutex);

}



static u64 btrfs_dev_stats_value(const struct extent_buffer *eb,