Commit 2e654e4b authored by Naohiro Aota's avatar Naohiro Aota Committed by David Sterba
Browse files

btrfs: zoned: activate block group on allocation 



Activate a block group when trying to allocate an extent from it. We check
read-only case and no space left case before trying to activate a block
group not to consume the number of active zones uselessly.

Signed-off-by: default avatarNaohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 68a384b5

fs/btrfs/extent-tree.c

+12 −0
Original line number Diff line number Diff line
@@ -3773,6 +3773,18 @@ static int do_allocation_zoned(struct btrfs_block_group *block_group, 
	if (skip)

		return 1;



	/* Check RO and no space case before trying to activate it */

	spin_lock(&block_group->lock);

	if (block_group->ro ||

	    block_group->alloc_offset == block_group->zone_capacity) {

		spin_unlock(&block_group->lock);

		return 1;

	}

	spin_unlock(&block_group->lock);



	if (!btrfs_zone_activate(block_group))

		return 1;



	spin_lock(&space_info->lock);

	spin_lock(&block_group->lock);

	spin_lock(&fs_info->treelog_bg_lock);