From fdf61219dc2512cd29b8b03a460a51af8ddca876 Mon Sep 17 00:00:00 2001
From: Yunlei He <heyunlei@huawei.com>
Date: Wed, 4 Apr 2018 17:29:05 +0800
Subject: [PATCH] f2fs: issue all big range discards in umount process

This patch modify max_requests to UINT_MAX, to issue
all big range discards in umount.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/segment.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index a02d5c1a7ed2..3c2e44f76ff3 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1024,6 +1024,7 @@ static void __init_discard_policy(struct f2fs_sb_info *sbi,
 	} else if (discard_type == DPOLICY_FSTRIM) {
 		dpolicy->io_aware = false;
 	} else if (discard_type == DPOLICY_UMOUNT) {
+		dpolicy->max_requests = UINT_MAX;
 		dpolicy->io_aware = false;
 	}
 }