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Commit dba21324 authored by Qu Wenruo's avatar Qu Wenruo Committed by David Sterba
Browse files

btrfs: qgroup: Make qgroup_reserve and its callers to use separate reservation type 



Since most callers of qgroup_reserve() are already defined by type,
converting qgroup_reserve() is quite an easy work.

Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent f59c0347

fs/btrfs/qgroup.c

+9 −11
Original line number Diff line number Diff line
@@ -2391,17 +2391,18 @@ int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, 
static bool qgroup_check_limits(const struct btrfs_qgroup *qg, u64 num_bytes)

{

	if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_RFER) &&

	    qg->reserved + (s64)qg->rfer + num_bytes > qg->max_rfer)

	    qgroup_rsv_total(qg) + (s64)qg->rfer + num_bytes > qg->max_rfer)

		return false;



	if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) &&

	    qg->reserved + (s64)qg->excl + num_bytes > qg->max_excl)

	    qgroup_rsv_total(qg) + (s64)qg->excl + num_bytes > qg->max_excl)

		return false;



	return true;

}



static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce)

static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce,

			  enum btrfs_qgroup_rsv_type type)

{

	struct btrfs_root *quota_root;

	struct btrfs_qgroup *qgroup;
@@ -2453,7 +2454,7 @@ static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce) 
			 * Commit the tree and retry, since we may have

			 * deletions which would free up space.

			 */

			if (!retried && qg->reserved > 0) {

			if (!retried && qgroup_rsv_total(qg) > 0) {

				struct btrfs_trans_handle *trans;



				spin_unlock(&fs_info->qgroup_lock);
@@ -2493,7 +2494,7 @@ static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce) 
		qg = unode_aux_to_qgroup(unode);



		trace_qgroup_update_reserve(fs_info, qg, num_bytes);

		qg->reserved += num_bytes;

		qgroup_rsv_add(qg, num_bytes, type);

	}



out:
@@ -2540,10 +2541,7 @@ void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info, 
		qg = unode_aux_to_qgroup(unode);



		trace_qgroup_update_reserve(fs_info, qg, -(s64)num_bytes);

		if (qg->reserved < num_bytes)

			report_reserved_underflow(fs_info, qg, num_bytes);

		else

			qg->reserved -= num_bytes;

		qgroup_rsv_release(qg, num_bytes, type);



		list_for_each_entry(glist, &qg->groups, next_group) {

			ret = ulist_add(fs_info->qgroup_ulist,
@@ -2931,7 +2929,7 @@ int btrfs_qgroup_reserve_data(struct inode *inode, 
					to_reserve, QGROUP_RESERVE);

	if (ret < 0)

		goto cleanup;

	ret = qgroup_reserve(root, to_reserve, true);

	ret = qgroup_reserve(root, to_reserve, true, BTRFS_QGROUP_RSV_DATA);

	if (ret < 0)

		goto cleanup;
@@ -3084,7 +3082,7 @@ int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes, 


	BUG_ON(num_bytes != round_down(num_bytes, fs_info->nodesize));

	trace_qgroup_meta_reserve(root, (s64)num_bytes);

	ret = qgroup_reserve(root, num_bytes, enforce);

	ret = qgroup_reserve(root, num_bytes, enforce, BTRFS_QGROUP_RSV_META);

	if (ret < 0)

		return ret;

	atomic64_add(num_bytes, &root->qgroup_meta_rsv);