Commit 6f410d1b authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: export the excluded extents helpers 



We'll need this to move the caching stuff around.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 676f1f75

fs/btrfs/ctree.h

+3 −0
Original line number Diff line number Diff line
@@ -2473,6 +2473,9 @@ static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info, 
	return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items;

}



int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,

			      u64 start, u64 num_bytes);

void btrfs_free_excluded_extents(struct btrfs_block_group_cache *cache);

int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,

			   unsigned long count);

void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,

fs/btrfs/extent-tree.c

+19 −17
Original line number Diff line number Diff line
@@ -100,7 +100,7 @@ static int btrfs_add_block_group_cache(struct btrfs_fs_info *info, 
	return 0;

}



static int add_excluded_extent(struct btrfs_fs_info *fs_info,

int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,

			      u64 start, u64 num_bytes)

{

	u64 end = start + num_bytes - 1;
@@ -111,7 +111,7 @@ static int add_excluded_extent(struct btrfs_fs_info *fs_info, 
	return 0;

}



static void free_excluded_extents(struct btrfs_block_group_cache *cache)

void btrfs_free_excluded_extents(struct btrfs_block_group_cache *cache)

{

	struct btrfs_fs_info *fs_info = cache->fs_info;

	u64 start, end;
@@ -136,7 +136,7 @@ static int exclude_super_stripes(struct btrfs_block_group_cache *cache) 
	if (cache->key.objectid < BTRFS_SUPER_INFO_OFFSET) {

		stripe_len = BTRFS_SUPER_INFO_OFFSET - cache->key.objectid;

		cache->bytes_super += stripe_len;

		ret = add_excluded_extent(fs_info, cache->key.objectid,

		ret = btrfs_add_excluded_extent(fs_info, cache->key.objectid,

						stripe_len);

		if (ret)

			return ret;
@@ -170,7 +170,7 @@ static int exclude_super_stripes(struct btrfs_block_group_cache *cache) 
			}



			cache->bytes_super += len;

			ret = add_excluded_extent(fs_info, start, len);

			ret = btrfs_add_excluded_extent(fs_info, start, len);

			if (ret) {

				kfree(logical);

				return ret;
@@ -450,7 +450,7 @@ static noinline void caching_thread(struct btrfs_work *work) 
	caching_ctl->progress = (u64)-1;



	up_read(&fs_info->commit_root_sem);

	free_excluded_extents(block_group);

	btrfs_free_excluded_extents(block_group);

	mutex_unlock(&caching_ctl->mutex);



	wake_up(&caching_ctl->wait);
@@ -558,7 +558,7 @@ int btrfs_cache_block_group(struct btrfs_block_group_cache *cache, 
		wake_up(&caching_ctl->wait);

		if (ret == 1) {

			put_caching_control(caching_ctl);

			free_excluded_extents(cache);

			btrfs_free_excluded_extents(cache);

			return 0;

		}

	} else {
@@ -4163,7 +4163,8 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info, 
		mutex_lock(&caching_ctl->mutex);



		if (start >= caching_ctl->progress) {

			ret = add_excluded_extent(fs_info, start, num_bytes);

			ret = btrfs_add_excluded_extent(fs_info, start,

							num_bytes);

		} else if (start + num_bytes <= caching_ctl->progress) {

			ret = btrfs_remove_free_space(block_group,

						      start, num_bytes);
@@ -4177,7 +4178,8 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info, 
			num_bytes = (start + num_bytes) -

				caching_ctl->progress;

			start = caching_ctl->progress;

			ret = add_excluded_extent(fs_info, start, num_bytes);

			ret = btrfs_add_excluded_extent(fs_info, start,

							num_bytes);

		}

out_lock:

		mutex_unlock(&caching_ctl->mutex);
@@ -7513,7 +7515,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info) 
		 */

		if (block_group->cached == BTRFS_CACHE_NO ||

		    block_group->cached == BTRFS_CACHE_ERROR)

			free_excluded_extents(block_group);

			btrfs_free_excluded_extents(block_group);



		btrfs_remove_free_space_cache(block_group);

		ASSERT(block_group->cached != BTRFS_CACHE_STARTED);
@@ -7806,7 +7808,7 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info) 
			 * We may have excluded something, so call this just in

			 * case.

			 */

			free_excluded_extents(cache);

			btrfs_free_excluded_extents(cache);

			btrfs_put_block_group(cache);

			goto error;

		}
@@ -7821,14 +7823,14 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info) 
		if (found_key.offset == btrfs_block_group_used(&cache->item)) {

			cache->last_byte_to_unpin = (u64)-1;

			cache->cached = BTRFS_CACHE_FINISHED;

			free_excluded_extents(cache);

			btrfs_free_excluded_extents(cache);

		} else if (btrfs_block_group_used(&cache->item) == 0) {

			cache->last_byte_to_unpin = (u64)-1;

			cache->cached = BTRFS_CACHE_FINISHED;

			add_new_free_space(cache, found_key.objectid,

					   found_key.objectid +

					   found_key.offset);

			free_excluded_extents(cache);

			btrfs_free_excluded_extents(cache);

		}



		ret = btrfs_add_block_group_cache(info, cache);
@@ -7952,14 +7954,14 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, u64 bytes_used, 
		 * We may have excluded something, so call this just in

		 * case.

		 */

		free_excluded_extents(cache);

		btrfs_free_excluded_extents(cache);

		btrfs_put_block_group(cache);

		return ret;

	}



	add_new_free_space(cache, chunk_offset, chunk_offset + size);



	free_excluded_extents(cache);

	btrfs_free_excluded_extents(cache);



#ifdef CONFIG_BTRFS_DEBUG

	if (btrfs_should_fragment_free_space(cache)) {
@@ -8075,7 +8077,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans, 
	 * Free the reserved super bytes from this block group before

	 * remove it.

	 */

	free_excluded_extents(block_group);

	btrfs_free_excluded_extents(block_group);

	btrfs_free_ref_tree_range(fs_info, block_group->key.objectid,

				  block_group->key.offset);

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