From: Chao Yu <yuchao0@huawei.com>
Date: Mon, 27 Mar 2017 10:14:05 +0000 (+0800)
Subject: f2fs: shrink blk plug region
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a54455f5eeb8d65455a27b3ace99f9af295b2897;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

f2fs: shrink blk plug region

Don't use blk plug covering area where there won't be any IOs being issued.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 471ea9944412..58cfbe3d4dc7 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -853,9 +853,8 @@ repeat:
 	if (kthread_should_stop())
 		return 0;
 
-	blk_start_plug(&plug);
-
 	mutex_lock(&dcc->cmd_lock);
+	blk_start_plug(&plug);
 	list_for_each_entry_safe(dc, tmp, pend_list, list) {
 		f2fs_bug_on(sbi, dc->state != D_PREP);
 
@@ -865,6 +864,7 @@ repeat:
 		if (iter++ > DISCARD_ISSUE_RATE)
 			break;
 	}
+	blk_finish_plug(&plug);
 
 	list_for_each_entry_safe(dc, tmp, wait_list, list) {
 		if (dc->state == D_DONE) {
@@ -874,8 +874,6 @@ repeat:
 	}
 	mutex_unlock(&dcc->cmd_lock);
 
-	blk_finish_plug(&plug);
-
 	iter = 0;
 	congestion_wait(BLK_RW_SYNC, HZ/50);