f2fs: remove blk_plugging in block_operations

blk_plugging doesn't seem to give any benefit.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/checkpoint.c

@@ -1166,11 +1166,8 @@ static int block_operations(struct f2fs_sb_info *sbi)
 		.nr_to_write = LONG_MAX,
 		.for_reclaim = 0,
 	};
-	struct blk_plug plug;
 	int err = 0, cnt = 0;
 
-	blk_start_plug(&plug);
-
 retry_flush_quotas:
 	f2fs_lock_all(sbi);
 	if (__need_flush_quota(sbi)) {
@@ -1198,7 +1195,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
 		f2fs_unlock_all(sbi);
 		err = f2fs_sync_dirty_inodes(sbi, DIR_INODE);
 		if (err)
-			goto out;
+			return err;
 		cond_resched();
 		goto retry_flush_quotas;
 	}
@@ -1214,7 +1211,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
 		f2fs_unlock_all(sbi);
 		err = f2fs_sync_inode_meta(sbi);
 		if (err)
-			goto out;
+			return err;
 		cond_resched();
 		goto retry_flush_quotas;
 	}
@@ -1230,7 +1227,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
 		if (err) {
 			up_write(&sbi->node_change);
 			f2fs_unlock_all(sbi);
-			goto out;
+			return err;
 		}
 		cond_resched();
 		goto retry_flush_nodes;
@@ -1242,8 +1239,6 @@ static int block_operations(struct f2fs_sb_info *sbi)
 	 */
 	__prepare_cp_block(sbi);
 	up_write(&sbi->node_change);
-out:
-	blk_finish_plug(&plug);
 	return err;
 }