Hillf Danton wrote:
> On Fri, Mar 15, 2013 at 1:50 AM, Kirill A. Shutemov
> <kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
> > + page_cache_get(page);
> > + spin_lock_irq(&mapping->tree_lock);
> > + page->mapping = mapping;
> > + page->index = offset;
> > + error = radix_tree_insert(&mapping->page_tree, offset, page);
> > + if (unlikely(error))
> > + goto err;
> > + if (PageTransHuge(page)) {
> > + int i;
> > + for (i = 1; i < HPAGE_CACHE_NR; i++) {
> struct page *tail = page + i; to easy reader
>
> > + page_cache_get(page + i);
> s/page_cache_get/get_page_foll/ ?
Why?
> > + page[i].index = offset + i;
> > + error = radix_tree_insert(&mapping->page_tree,
> > + offset + i, page + i);
> > + if (error) {
> > + page_cache_release(page + i);
> > + break;
> > + }
> > }
> > - radix_tree_preload_end();
> > - } else
> > - mem_cgroup_uncharge_cache_page(page);
> > -out:
> > + if (error) {
> > + error = ENOSPC; /* no space for a huge page */
> s/E/-E/
Good catch! Thanks.
> > + for (i--; i > 0; i--) {
> > + radix_tree_delete(&mapping->page_tree,
> > + offset + i);
> > + page_cache_release(page + i);
> > + }
> > + radix_tree_delete(&mapping->page_tree, offset);
> > + goto err;
> > + }
> > + }
--
Kirill A. Shutemov
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