Re: [PATCH 08/10] minix: handle set_blocksize failures

[Christoph Hellwig <hch@lst.de>]

On Mon, May 11, 2026 at 06:08:18PM +0200, Jan Kara wrote:
> On Mon 11-05-26 09:16:53, Christoph Hellwig wrote:
> > minix uses buffer_heads, which don't handle block size > PAGE_SIZE well.
> > Without this, mounting we will hit the
> > 
> >         BUG_ON(offset >= folio_size(folio));
> > 
> > in folio_set_bh on the first __bread_gfp call.
> > 
> > Signed-off-by: Christoph Hellwig <hch@lst.de>
> > ---
> >  fs/minix/inode.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/fs/minix/inode.c b/fs/minix/inode.c
> > index 9c6bac248907..03a69b13950d 100644
> > --- a/fs/minix/inode.c
> > +++ b/fs/minix/inode.c
> > @@ -292,7 +292,8 @@ static int minix_fill_super(struct super_block *s, struct fs_context *fc)
> >  		sbi->s_namelen = 60;
> >  		sbi->s_version = MINIX_V3;
> >  		sbi->s_mount_state = MINIX_VALID_FS;
> > -		sb_set_blocksize(s, m3s->s_blocksize);
> > +		if (!sb_set_blocksize(s, m3s->s_blocksize))
> > +			goto out;
> 
> This should go to out_release AFAICT. Otherwise we leak the bh.

Yes.  Christian, do you want a resend or incremental patch?