Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c3929c36 authored by Miao Xie's avatar Miao Xie Committed by Chris Mason
Browse files

Btrfs: modify rw_devices counter under chunk_mutex context 



rw_devices counter is often used to tune the profile when doing chunk allocation,
so we should modify it under the chunk_mutex context to avoid getting wrong
chunk profile.

Signed-off-by: default avatarMiao Xie <miaox@cn.fujitsu.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent 5f375835

fs/btrfs/volumes.c

+2 −2
Original line number Diff line number Diff line
@@ -1649,8 +1649,8 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) 
	if (device->writeable) {

		lock_chunks(root);

		list_del_init(&device->dev_alloc_list);

		device->fs_devices->rw_devices--;

		unlock_chunks(root);

		root->fs_info->fs_devices->rw_devices--;

		clear_super = true;

	}
@@ -1795,8 +1795,8 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) 
		lock_chunks(root);

		list_add(&device->dev_alloc_list,

			 &root->fs_info->fs_devices->alloc_list);

		device->fs_devices->rw_devices++;

		unlock_chunks(root);

		root->fs_info->fs_devices->rw_devices++;

	}

	goto error_brelse;

}