On Tue, 2018-04-17 at 15:05 +0800, Chengguang Xu wrote:
> When specifying iocharset/codepage multiple times in a mount,
> current option parsing will cause inaccurate refcount of nls
> module. Hence, call unload_nls for previous one in this case.
>
> Signed-off-by: Chengguang Xu <cgxu519@xxxxxxx>
Looks good.
Reviewed-by: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
Thanks,
Vyacheslav Dubeyko.
> ---
> fs/hfs/super.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/fs/hfs/super.c b/fs/hfs/super.c
> index 1738767..6a5f6fd 100644
> --- a/fs/hfs/super.c
> +++ b/fs/hfs/super.c
> @@ -329,8 +329,10 @@ static int parse_options(char *options, struct
> hfs_sb_info *hsb)
> return 0;
> }
> p = match_strdup(&args[0]);
> - if (p)
> + if (p) {
> + unload_nls(hsb->nls_disk);
> hsb->nls_disk = load_nls(p);
> + }
> if (!hsb->nls_disk) {
> pr_err("unable to load codepage
> \"%s\"\n", p);
> kfree(p);
> @@ -344,8 +346,10 @@ static int parse_options(char *options, struct
> hfs_sb_info *hsb)
> return 0;
> }
> p = match_strdup(&args[0]);
> - if (p)
> + if (p) {
> + unload_nls(hsb->nls_io);
> hsb->nls_io = load_nls(p);
> + }
> if (!hsb->nls_io) {
> pr_err("unable to load iocharset
> \"%s\"\n", p);
> kfree(p);
