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 <daehoje...@google.com>
Signed-off-by: Chao Yu <c...@kernel.org>
---
fs/f2fs/sysfs.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 2b5c35ce7b8c..d74472d96026 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -635,6 +635,13 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
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;
--
2.49.0
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