1 files changed, 2 insertions, 41 deletions

diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 23579dc39fa6..c0f350c3a0cf 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -11,7 +11,6 @@
 #include <linux/slab.h>
 #include <linux/workqueue.h>
 #include <linux/btrfs.h>
-#include <linux/sizes.h>
 
 #include "ctree.h"
 #include "transaction.h"
@@ -2895,20 +2894,8 @@ out:
 	return ret;
 }
 
-/*
- * Two limits to commit transaction in advance.
- *
- * For RATIO, it will be 1/RATIO of the remaining limit as threshold.
- * For SIZE, it will be in byte unit as threshold.
- */
-#define QGROUP_FREE_RATIO		32
-#define QGROUP_FREE_SIZE		SZ_32M
-static bool qgroup_check_limits(struct btrfs_fs_info *fs_info,
-				const struct btrfs_qgroup *qg, u64 num_bytes)
+static bool qgroup_check_limits(const struct btrfs_qgroup *qg, u64 num_bytes)
 {
-	u64 free;
-	u64 threshold;
-
 	if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_RFER) &&
 	    qgroup_rsv_total(qg) + (s64)qg->rfer + num_bytes > qg->max_rfer)
 		return false;
@@ -2917,32 +2904,6 @@ static bool qgroup_check_limits(struct btrfs_fs_info *fs_info,
 	    qgroup_rsv_total(qg) + (s64)qg->excl + num_bytes > qg->max_excl)
 		return false;
 
-	/*
-	 * Even if we passed the check, it's better to check if reservation
-	 * for meta_pertrans is pushing us near limit.
-	 * If there is too much pertrans reservation or it's near the limit,
-	 * let's try commit transaction to free some, using transaction_kthread
-	 */
-	if ((qg->lim_flags & (BTRFS_QGROUP_LIMIT_MAX_RFER |
-			      BTRFS_QGROUP_LIMIT_MAX_EXCL))) {
-		if (qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) {
-			free = qg->max_excl - qgroup_rsv_total(qg) - qg->excl;
-			threshold = min_t(u64, qg->max_excl / QGROUP_FREE_RATIO,
-					  QGROUP_FREE_SIZE);
-		} else {
-			free = qg->max_rfer - qgroup_rsv_total(qg) - qg->rfer;
-			threshold = min_t(u64, qg->max_rfer / QGROUP_FREE_RATIO,
-					  QGROUP_FREE_SIZE);
-		}
-
-		/*
-		 * Use transaction_kthread to commit transaction, so we no
-		 * longer need to bother nested transaction nor lock context.
-		 */
-		if (free < threshold)
-			btrfs_commit_transaction_locksafe(fs_info);
-	}
-
 	return true;
 }
 
@@ -2990,7 +2951,7 @@ static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce,
 
 		qg = unode_aux_to_qgroup(unode);
 
-		if (enforce && !qgroup_check_limits(fs_info, qg, num_bytes)) {
+		if (enforce && !qgroup_check_limits(qg, num_bytes)) {
 			ret = -EDQUOT;
 			goto out;
 		}