> On Fri, 23 Mar 2001, Stephen C. Tweedie wrote:
> >
> > The patch below is for two races in sysV shared memory.
>
> + spin_lock (&info->lock);
> +
> + /* The shmem_swp_entry() call may have blocked, and
> + * shmem_writepage may have been moving a page between the page
> + * cache and swap cache. We need to recheck the page cache
> + * under the protection of the info->lock spinlock. */
> +
> + page = find_lock_page(mapping, idx);
>
> Ehh.. Sleeping with the spin-lock held? Sounds like a truly bad idea.
Umm find_lock_page doesnt sleep does it ?
Alan
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