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btrfs: factor out found_extent() for extent allocation
Factor out found_extent() from find_free_extent_update_loop(). This function is called when a proper extent is found and before returning from find_free_extent(). Hook functions like found_extent_clustered() should save information for a next allocation. 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>
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1 changed files with 25 additions and 5 deletions
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@ -3711,6 +3711,30 @@ static void release_block_group(struct btrfs_block_group *block_group,
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btrfs_release_block_group(block_group, delalloc);
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}
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static void found_extent_clustered(struct find_free_extent_ctl *ffe_ctl,
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struct btrfs_key *ins)
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{
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struct btrfs_free_cluster *last_ptr = ffe_ctl->last_ptr;
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if (!ffe_ctl->use_cluster && last_ptr) {
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spin_lock(&last_ptr->lock);
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last_ptr->window_start = ins->objectid;
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spin_unlock(&last_ptr->lock);
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}
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}
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static void found_extent(struct find_free_extent_ctl *ffe_ctl,
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struct btrfs_key *ins)
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{
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switch (ffe_ctl->policy) {
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case BTRFS_EXTENT_ALLOC_CLUSTERED:
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found_extent_clustered(ffe_ctl, ins);
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break;
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default:
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BUG();
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}
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}
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/*
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* Return >0 means caller needs to re-search for free extent
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* Return 0 means we have the needed free extent.
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@ -3737,11 +3761,7 @@ static int find_free_extent_update_loop(struct btrfs_fs_info *fs_info,
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return 1;
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if (ins->objectid) {
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if (!use_cluster && last_ptr) {
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spin_lock(&last_ptr->lock);
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last_ptr->window_start = ins->objectid;
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spin_unlock(&last_ptr->lock);
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}
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found_extent(ffe_ctl, ins);
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return 0;
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}
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