From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Fri, 25 Jan 2019 17:12:13 +0000 (-0800)
Subject: f2fs: try to keep CP_TRIMMED_FLAG after successful umount
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b86232536c3ec068b0960ffc62c61a872412b2b7;p=linux.git

f2fs: try to keep CP_TRIMMED_FLAG after successful umount

If every discard were issued successfully, we can avoid further discard.

Reviewed-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 342b720fb4db2..fdd8cd21522f4 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1063,6 +1063,8 @@ static void __init_discard_policy(struct f2fs_sb_info *sbi,
 	} else if (discard_type == DPOLICY_UMOUNT) {
 		dpolicy->max_requests = UINT_MAX;
 		dpolicy->io_aware = false;
+		/* we need to issue all to keep CP_TRIMMED_FLAG */
+		dpolicy->granularity = 1;
 	}
 }