RE: [f2fs-dev] [PATCH] f2fs: fix incorrect parsing with option string

From: Chao Yu
Date: Mon Mar 17 2014 - 21:00:02 EST


Hi,

> -----Original Message-----
> From: Jaegeuk Kim [mailto:jaegeuk.kim@xxxxxxxxxxx]
> Sent: Tuesday, March 18, 2014 8:33 AM
> To: Chao Yu
> Cc: linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx; linux-fsdevel@xxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [f2fs-dev] [PATCH] f2fs: fix incorrect parsing with option string
>
> Hi,
>
> 2014-03-17 (ì), 17:40 +0800, Chao Yu:
> > Previously 'background_gc={on***,off***}' is being parsed as correct option,
> > with this patch we cloud fix the trivial bug in mount process.
> >
> > Signed-off-by: Chao Yu <chao2.yu@xxxxxxxxxxx>
> > ---
> > fs/f2fs/super.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> > index 057a3ef..6597290 100644
> > --- a/fs/f2fs/super.c
> > +++ b/fs/f2fs/super.c
> > @@ -258,9 +258,9 @@ static int parse_options(struct super_block *sb, char *options)
> >
> > if (!name)
> > return -ENOMEM;
> > - if (!strncmp(name, "on", 2))
> > + if (!strncmp(name, "on", strlen(name)))
>
> What about 'background_gc=o'?
> Need to check strlen(name) == 2...

Oh, you're right. I will fix it and send v2 patch.
Thanks for your review. :)

> Thanks,
>
> > set_opt(sbi, BG_GC);
> > - else if (!strncmp(name, "off", 3))
> > + else if (!strncmp(name, "off", strlen(name)))
> > clear_opt(sbi, BG_GC);
> > else {
> > kfree(name);
>
> --
> Jaegeuk Kim
> Samsung

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/