Rabin, Am 29.05.2017 um 16:33 schrieb Rabin Vincent: > On Mon, May 29, 2017 at 01:08:25PM +0100, Al Viro wrote: >> Userspace sure as hell does. st_dev in stat(2) is a block device number; >> moreover, there might _be_ a block device with the same number at the same >> time - even mounted. Why not make ->show_options() print the currently >> valid volume name, anyway? That would seem to be the obvious approach... > > The following patch works for me, if it's OK to show options that can't > actually be used when mounting: Good that this very small changes fulfils your use case. :-) I'd accept and ignore ubi= and vol= parameters. i.e. diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index cf4cc99b75b5..50cebbe35c38 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -931,6 +933,7 @@ enum { Opt_chk_data_crc, Opt_no_chk_data_crc, Opt_override_compr, + Opt_ignore, Opt_err, }; @@ -942,6 +945,8 @@ static const match_table_t tokens = { {Opt_chk_data_crc, "chk_data_crc"}, {Opt_no_chk_data_crc, "no_chk_data_crc"}, {Opt_override_compr, "compr=%s"}, + {Opt_ignore, "ubi=%s"}, + {Opt_ignore, "vol=%s"}, {Opt_err, NULL}, }; @@ -1042,6 +1047,8 @@ static int ubifs_parse_options(struct ubifs_info *c, char *options, c->default_compr = c->mount_opts.compr_type; break; } + case Opt_ignore: + break; default: { unsigned long flag; Thanks, //richard