From: Chao Yu <yuchao0@huawei.com>
Date: Tue, 10 Apr 2018 07:43:09 +0000 (+0800)
Subject: f2fs: turn down IO priority of discard from background
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=72497b8d5271;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

f2fs: turn down IO priority of discard from background

In order to avoid interfering normal r/w IO, let's turn down IO
priority of discard issued from background.

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 3db035bf7203..bef74d628f66 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -931,6 +931,7 @@ static void __init_discard_policy(struct f2fs_sb_info *sbi,
 		dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME;
 		dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME;
 		dpolicy->io_aware = true;
+		dpolicy->sync = false;
 		if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) {
 			dpolicy->granularity = 1;
 			dpolicy->max_interval = DEF_MIN_DISCARD_ISSUE_TIME;