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btrfs: factor out release_block_group()

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Factor out release_block_group() from find_free_extent(). This function
is called when it gives up an allocation from a block group. Each
allocation policy should reset its information for an allocation in
the next block group.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2020-02-25 12:56:21 +09:00 committed by David Sterba
parent 897cae7948
commit baba50624f
1 changed files with 19 additions and 5 deletions
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24
fs/btrfs/extent-tree.c
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@ -3693,6 +3693,24 @@ static int do_allocation(struct btrfs_block_group *block_group,
}
}
static void release_block_group(struct btrfs_block_group *block_group,
struct find_free_extent_ctl *ffe_ctl,
int delalloc)
{
switch (ffe_ctl->policy) {
case BTRFS_EXTENT_ALLOC_CLUSTERED:
ffe_ctl->retry_clustered = false;
ffe_ctl->retry_unclustered = false;
break;
default:
BUG();
}
BUG_ON(btrfs_bg_flags_to_raid_index(block_group->flags) !=
ffe_ctl->index);
btrfs_release_block_group(block_group, delalloc);
}
/*
* Return >0 means caller needs to re-search for free extent
* Return 0 means we have the needed free extent.
@ -4069,11 +4087,7 @@ static noinline int find_free_extent(struct btrfs_fs_info *fs_info,
btrfs_release_block_group(block_group, delalloc);
break;
loop:
ffe_ctl.retry_clustered = false;
ffe_ctl.retry_unclustered = false;
BUG_ON(btrfs_bg_flags_to_raid_index(block_group->flags) !=
ffe_ctl.index);
btrfs_release_block_group(block_group, delalloc);
release_block_group(block_group, &ffe_ctl, delalloc);
cond_resched();
}
up_read(&space_info->groups_sem);