6.12-stable review patch. If anyone has any objections, please let me know.
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From: Chao Yu chao@kernel.org
[ 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 --- fs/f2fs/sysfs.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index b450046c24ab..d79d8041b8b7 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -630,6 +630,13 @@ 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;