diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 99 |
1 files changed, 48 insertions, 51 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index fe0e59ab33cc..780c1eeb8299 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -876,6 +876,38 @@ static void btrfs_issue_discard(struct block_device *bdev, } #endif +static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, + u64 num_bytes) +{ +#ifdef BIO_RW_DISCARD + int ret; + u64 map_length = num_bytes; + struct btrfs_multi_bio *multi = NULL; + + /* Tell the block device(s) that the sectors can be discarded */ + ret = btrfs_map_block(&root->fs_info->mapping_tree, READ, + bytenr, &map_length, &multi, 0); + if (!ret) { + struct btrfs_bio_stripe *stripe = multi->stripes; + int i; + + if (map_length > num_bytes) + map_length = num_bytes; + + for (i = 0; i < multi->num_stripes; i++, stripe++) { + btrfs_issue_discard(stripe->dev->bdev, + stripe->physical, + map_length); + } + kfree(multi); + } + + return ret; +#else + return 0; +#endif +} + static int noinline free_extents(struct btrfs_trans_handle *trans, struct btrfs_root *extent_root, struct list_head *del_list) @@ -1069,10 +1101,6 @@ search: for (pos = cur, n = pos->next; pos != end; pos = n, n = pos->next) { struct pending_extent_op *tmp; -#ifdef BIO_RW_DISCARD - u64 map_length; - struct btrfs_multi_bio *multi = NULL; -#endif tmp = list_entry(pos, struct pending_extent_op, list); /* @@ -1084,28 +1112,6 @@ search: tmp->del); BUG_ON(ret); -#ifdef BIO_RW_DISCARD - map_length = tmp->num_bytes; - ret = btrfs_map_block(&info->mapping_tree, READ, - tmp->bytenr, &map_length, &multi, - 0); - if (!ret) { - struct btrfs_bio_stripe *stripe; - int i; - - stripe = multi->stripes; - - if (map_length > tmp->num_bytes) - map_length = tmp->num_bytes; - - for (i = 0; i < multi->num_stripes; - i++, stripe++) - btrfs_issue_discard(stripe->dev->bdev, - stripe->physical, - map_length); - kfree(multi); - } -#endif list_del_init(&tmp->list); unlock_extent(&info->extent_ins, tmp->bytenr, tmp->bytenr + tmp->num_bytes - 1, @@ -1965,6 +1971,11 @@ static int update_block_group(struct btrfs_trans_handle *trans, spin_unlock(&cache->space_info->lock); if (mark_free) { int ret; + + ret = btrfs_discard_extent(root, bytenr, + num_bytes); + WARN_ON(ret); + ret = btrfs_add_free_space(cache, bytenr, num_bytes); WARN_ON(ret); @@ -2104,8 +2115,12 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, EXTENT_DIRTY); if (ret) break; + + ret = btrfs_discard_extent(root, start, end + 1 - start); + btrfs_update_pinned_extents(root, start, end + 1 - start, 0); clear_extent_dirty(unpin, start, end, GFP_NOFS); + if (need_resched()) { mutex_unlock(&root->fs_info->pinned_mutex); cond_resched(); @@ -2113,7 +2128,7 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, } } mutex_unlock(&root->fs_info->pinned_mutex); - return 0; + return ret; } static int finish_current_insert(struct btrfs_trans_handle *trans, @@ -2458,10 +2473,6 @@ static int __free_extent(struct btrfs_trans_handle *trans, if (refs == 0) { u64 super_used; u64 root_used; -#ifdef BIO_RW_DISCARD - u64 map_length = num_bytes; - struct btrfs_multi_bio *multi = NULL; -#endif if (pin) { mutex_lock(&root->fs_info->pinned_mutex); @@ -2496,25 +2507,6 @@ static int __free_extent(struct btrfs_trans_handle *trans, ret = update_block_group(trans, root, bytenr, num_bytes, 0, mark_free); BUG_ON(ret); -#ifdef BIO_RW_DISCARD - /* Tell the block device(s) that the sectors can be discarded */ - ret = btrfs_map_block(&root->fs_info->mapping_tree, READ, - bytenr, &map_length, &multi, 0); - if (!ret) { - struct btrfs_bio_stripe *stripe = multi->stripes; - int i; - - if (map_length > num_bytes) - map_length = num_bytes; - - for (i = 0; i < multi->num_stripes; i++, stripe++) { - btrfs_issue_discard(stripe->dev->bdev, - stripe->physical, - map_length); - } - kfree(multi); - } -#endif } btrfs_free_path(path); finish_current_insert(trans, extent_root, 0); @@ -3112,16 +3104,21 @@ again: int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len) { struct btrfs_block_group_cache *cache; + int ret = 0; cache = btrfs_lookup_block_group(root->fs_info, start); if (!cache) { printk(KERN_ERR "Unable to find block group for %Lu\n", start); return -ENOSPC; } + + ret = btrfs_discard_extent(root, start, len); + btrfs_add_free_space(cache, start, len); put_block_group(cache); update_reserved_extents(root, start, len, 0); - return 0; + + return ret; } int btrfs_reserve_extent(struct btrfs_trans_handle *trans, |