Re: [PATCH 1/2] f2fs: Constrain the modification range of dir_level in the sysfs

[Chao Yu]

On 2023/12/22 11:29, Yongpeng Yang wrote:
> The {struct f2fs_sb_info}->dir_level can be modified through the sysfs
> interface, but its value range is not limited. If the value exceeds
> MAX_DIR_HASH_DEPTH and the mount options include "noinline_dentry",
> the following error will occur:
> [root@fedora ~]# mount -o noinline_dentry /dev/sdb  /mnt/sdb/
> [root@fedora ~]# echo 128 > /sys/fs/f2fs/sdb/dir_level
> [root@fedora ~]# cd /mnt/sdb/
> [root@fedora sdb]# mkdir test
> [root@fedora sdb]# cd test/
> [root@fedora test]# mkdir test
> mkdir: cannot create directory 'test': Argument list too long
>
> Signed-off-by: Yongpeng Yang <yangyongpeng1@xxxxxxxx>

Reviewed-by: Chao Yu <chao@xxxxxxxxxx>

Thanks,