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SubjectRe: [PATCH] sb_read problem in hpfs


On Wed, 20 Feb 2002, Chris Mason wrote:

>
> Hi guys,
>
> hpfs_read_super triggers calls to sb_bread (through hpfs_map_sector)
> before setting s_blocksize. This leads to a BUG() in grow_buffers.

Fsck. Merge problems when backporting to 2.4 - thanks for spotting.
Yes, patch is correct. I'll look through the rest of thing and see
what else is missing.

> This patch was tested lightly, hpfs_read_super completes
> properly when an hpfs FS is not present.
>
> -chris
>
> --- suse.4/fs/hpfs/super.c Tue, 19 Feb 2002 08:55:47 -0500
> +++ suse.4(w)/fs/hpfs/super.c Tue, 19 Feb 2002 22:28:37 -0500
> @@ -410,6 +410,8 @@
> /*s->s_hpfs_mounting = 1;*/
> dev = s->s_dev;
> set_blocksize(dev, 512);
> + s->s_blocksize = 512;
> + s->s_blocksize_bits = 9;
> s->s_hpfs_fs_size = -1;
> if (!(bootblock = hpfs_map_sector(s, 0, &bh0, 0))) goto bail1;
> if (!(superblock = hpfs_map_sector(s, 16, &bh1, 1))) goto bail2;
> @@ -436,8 +438,6 @@
>
> /* Fill superblock stuff */
> s->s_magic = HPFS_SUPER_MAGIC;
> - s->s_blocksize = 512;
> - s->s_blocksize_bits = 9;
> s->s_op = &hpfs_sops;
>
> s->s_hpfs_root = superblock->root;
>
>

-
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