Hi Stephen,
On Fri, 23 Mar 2001, Stephen C. Tweedie wrote:
> @@ -234,11 +243,11 @@
> return -ENOMEM;
> }
>
> - spin_lock(&info->lock);
> - shmem_recalc_inode(page->mapping->host);
> entry = shmem_swp_entry(info, page->index);
> if (IS_ERR(entry)) /* this had been allocted on page allocation */
> BUG();
> + spin_lock(&info->lock);
> + shmem_recalc_inode(page->mapping->host);
> error = -EAGAIN;
> if (entry->val) {
> __swap_free(swap, 2);
I think this is wrong. The spinlock protects us against
shmem_truncate. shmem_swp_entry cannot sleep in this case since the
entry is allocated in nopage.
Greetings
Christoph
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