Commit 68a384b5 authored by Naohiro Aota's avatar Naohiro Aota Committed by David Sterba
Browse files

btrfs: zoned: load active zone info for block group 



Load activeness of underlying zones of a block group. When underlying zones
are active, we add the block group to the fs_info->zone_active_bgs list.

Signed-off-by: default avatarNaohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent afba2bc0

fs/btrfs/zoned.c

+24 −0
Original line number Diff line number Diff line
@@ -1170,6 +1170,7 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new) 
	unsigned int nofs_flag;

	u64 *alloc_offsets = NULL;

	u64 *caps = NULL;

	unsigned long *active = NULL;

	u64 last_alloc = 0;

	u32 num_sequential = 0, num_conventional = 0;
@@ -1214,6 +1215,12 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new) 
		goto out;

	}



	active = bitmap_zalloc(map->num_stripes, GFP_NOFS);

	if (!active) {

		ret = -ENOMEM;

		goto out;

	}



	for (i = 0; i < map->num_stripes; i++) {

		bool is_sequential;

		struct blk_zone zone;
@@ -1297,8 +1304,16 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new) 
			/* Partially used zone */

			alloc_offsets[i] =

					((zone.wp - zone.start) << SECTOR_SHIFT);

			__set_bit(i, active);

			break;

		}



		/*

		 * Consider a zone as active if we can allow any number of

		 * active zones.

		 */

		if (!device->zone_info->max_active_zones)

			__set_bit(i, active);

	}



	if (num_sequential > 0)
@@ -1346,6 +1361,7 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new) 
		}

		cache->alloc_offset = alloc_offsets[0];

		cache->zone_capacity = caps[0];

		cache->zone_is_active = test_bit(0, active);

		break;

	case BTRFS_BLOCK_GROUP_DUP:

	case BTRFS_BLOCK_GROUP_RAID1:
@@ -1361,6 +1377,13 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new) 
		goto out;

	}



	if (cache->zone_is_active) {

		btrfs_get_block_group(cache);

		spin_lock(&fs_info->zone_active_bgs_lock);

		list_add_tail(&cache->active_bg_list, &fs_info->zone_active_bgs);

		spin_unlock(&fs_info->zone_active_bgs_lock);

	}



out:

	if (cache->alloc_offset > fs_info->zone_size) {

		btrfs_err(fs_info,
@@ -1392,6 +1415,7 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new) 
		kfree(cache->physical_map);

		cache->physical_map = NULL;

	}

	bitmap_free(active);

	kfree(caps);

	kfree(alloc_offsets);

	free_extent_map(em);