From: Chao Yu <chao@kernel.org>
Date: Fri, 27 Jun 2025 02:38:17 +0000 (+0800)
Subject: f2fs: fix to check upper boundary for gc_valid_thresh_ratio
X-Git-Tag: v6.16.1~149
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=54c4ee25939e73cee77090f636810679cdb348f0;p=thirdparty%2Fkernel%2Fstable.git

f2fs: fix to check upper boundary for gc_valid_thresh_ratio

[ Upstream commit 7a96d1d73ce9de5041e891a623b722f900651561 ]

This patch adds missing upper boundary check while setting
gc_valid_thresh_ratio via sysfs.

Fixes: e791d00bd06c ("f2fs: add valid block ratio not to do excessive GC for one time GC")
Cc: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index d0ec9963ff1b3..173ad1a727466 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -635,6 +635,13 @@ out:
 		return count;
 	}
 
+	if (!strcmp(a->attr.name, "gc_valid_thresh_ratio")) {
+		if (t > 100)
+			return -EINVAL;
+		*ui = (unsigned int)t;
+		return count;
+	}
+
 #ifdef CONFIG_F2FS_IOSTAT
 	if (!strcmp(a->attr.name, "iostat_enable")) {
 		sbi->iostat_enable = !!t;