Hi,
On Mon, 2006-09-04 at 11:22 +0200, Jan Engelhardt wrote:
> Hi,
>
>
> >Unfortunately thats not possible as the struct gfs2_sbd is actually
> >changed lower down the call chain, but only in the lock_dlm module.
>
> +void gfs2_lm_unmount(struct gfs2_sbd *sdp)
> +{
> + if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
> + gfs2_unmount_lockproto(&sdp->sd_lockstruct);
> +}
>
> I can't follow... test_bit does not modify *sdp or sdp->sd_flags, and
> gfs2_unmount_lockproto does not either.
>
sd_lockstruct is part of the superblock and fields in the lockstruct are
changed by (for example) fs/gfs2/locking/dlm/mount.c: gdlm_unmount() so
I don't think its valid to mark the superblock const here (despite being
a great fan of using const in general).
Steve.
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