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Commit 242e2956 authored by David Sterba's avatar David Sterba
Browse files

btrfs: switch dev stats item to the permanent item key 



Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 50c2d5ab

fs/btrfs/ctree.h

+4 −1
Original line number Diff line number Diff line
@@ -100,6 +100,9 @@ struct btrfs_ordered_sum; 
/* tracks free space in block groups. */

#define BTRFS_FREE_SPACE_TREE_OBJECTID 10ULL



/* device stats in the device tree */

#define BTRFS_DEV_STATS_OBJECTID 0ULL



/* for storing balance parameters in the root tree */

#define BTRFS_BALANCE_OBJECTID -4ULL
@@ -2219,7 +2222,7 @@ struct btrfs_ioctl_defrag_range_args { 
 *

 * - device statistics, store IO stats in the device tree, one key for all

 *   stats

 *   (0, BTRFS_DEV_STATS_KEY, 0)

 *   (BTRFS_DEV_STATS_OBJECTID, BTRFS_DEV_STATS_KEY, 0)

 */

#define BTRFS_PERSISTENT_ITEM_KEY	249

fs/btrfs/volumes.c

+4 −4
Original line number Diff line number Diff line
@@ -6705,8 +6705,8 @@ int btrfs_init_dev_stats(struct btrfs_fs_info *fs_info) 
		int item_size;

		struct btrfs_dev_stats_item *ptr;



		key.objectid = 0;

		key.type = BTRFS_DEV_STATS_KEY;

		key.objectid = BTRFS_DEV_STATS_OBJECTID;

		key.type = BTRFS_PERSISTENT_ITEM_KEY;

		key.offset = device->devid;

		ret = btrfs_search_slot(NULL, dev_root, &key, path, 0, 0);

		if (ret) {
@@ -6753,8 +6753,8 @@ static int update_dev_stat_item(struct btrfs_trans_handle *trans, 
	int ret;

	int i;



	key.objectid = 0;

	key.type = BTRFS_DEV_STATS_KEY;

	key.objectid = BTRFS_DEV_STATS_OBJECTID;

	key.type = BTRFS_PERSISTENT_ITEM_KEY;

	key.offset = device->devid;



	path = btrfs_alloc_path();