On Wed, Dec 06, 2006 at 08:43:47AM +0000, Lachlan McIlroy wrote:
> David Chinner wrote:
> >On Tue, Dec 05, 2006 at 12:46:46PM +0100, Klaus Strebel wrote:
> >
> >>Hi guys,
> >>
> >>just updated my CVS copy from oss.sgi.com ( the linux-2.6-xfs ) and
> >>tried to compile ... but your patch failes to compile if HAVE_PERCPU_SB
> >>is #ifndef'd :-(, the m_icsb_mutex is not in the struct see xfs_mount.h.
> >>Make oldconfig didn't show HAVE_PERCPU_SB as option for .config, looks
> >>like nobody tested on a single processor config ??
> >
> >
> >Sorry - my bad. The code did not change for UP, so I didn't think to
> >test it. The patch below abstracts the icsb_mutex so that it
> >doesn't get directly referenced by code outside the per-cpu counter
> >code. Builds with and without HAVE_PERCPU_SB defined.
> >
> >I'll run a test cycle on it and get it fixed up.
> >
> >Cheers,
> >
> >Dave.
>
> @@ -1803,6 +1803,7 @@ xfs_icsb_destroy_counters(
> unregister_hotcpu_notifier(&mp->m_icsb_notifier);
> free_percpu(mp->m_sb_cnts);
> }
> + mutex_destroy(&mp->m_icsb_mutex);
> }
>
> Do you need to abstract the call to mutex_destroy too?
No. I didn't abstract the mutex_init and mutex_destroy calls because
they are in the init/destroy functions for the icsb subsystem and
those functions are #define'd out when HAVE_PERCPU_SB is not
defined.
> The rest of the change looks good.
Thanks, Lachlan.
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
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