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btrfs: zoned: activate block group on allocation

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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: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2021-08-19 21:19:19 +09:00 committed by David Sterba
parent 68a384b5ab
commit 2e654e4bb9
1 changed files with 12 additions and 0 deletions
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12
fs/btrfs/extent-tree.c
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@ -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);