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btrfs: call btrfs_try_granting_tickets when reserving space

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If we have compression on we could free up more space than we reserved,
and thus be able to make a space reservation.  Add the call for this
scenario.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-07-21 10:22:19 -04:00 committed by David Sterba
parent 2732798c9b
commit 99ffb43e5d
1 changed files with 7 additions and 0 deletions
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7
fs/btrfs/block-group.c
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@ -2961,6 +2961,13 @@ int btrfs_add_reserved_bytes(struct btrfs_block_group *cache,
space_info, -ram_bytes);
if (delalloc)
cache->delalloc_bytes += num_bytes;
/*
* Compression can use less space than we reserved, so wake
* tickets if that happens
*/
if (num_bytes < ram_bytes)
btrfs_try_granting_tickets(cache->fs_info, space_info);
}
spin_unlock(&cache->lock);
spin_unlock(&space_info->lock);