swapin_readahead: excise NUMA bogosity

[pandora-kernel.git] / mm / shmem.c

diff --git a/mm/shmem.c b/mm/shmem.c
index 51b3d6c..88c6685 100644 (file)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1025,53 +1025,34 @@ out:
        return err;
 }
 
-static struct page *shmem_swapin_async(struct shared_policy *p,
+static struct page *shmem_swapin(struct shmem_inode_info *info,
                                       swp_entry_t entry, unsigned long idx)
 {
-       struct page *page;
        struct vm_area_struct pvma;
+       struct page *page;
 
        /* Create a pseudo vma that just contains the policy */
-       memset(&pvma, 0, sizeof(struct vm_area_struct));
-       pvma.vm_end = PAGE_SIZE;
+       pvma.vm_start = 0;
        pvma.vm_pgoff = idx;
-       pvma.vm_policy = mpol_shared_policy_lookup(p, idx);
+       pvma.vm_ops = NULL;
+       pvma.vm_policy = mpol_shared_policy_lookup(&info->policy, idx);
+       swapin_readahead(entry, 0, &pvma);
        page = read_swap_cache_async(entry, &pvma, 0);
        mpol_free(pvma.vm_policy);
        return page;
 }
 
-static struct page *shmem_swapin(struct shmem_inode_info *info,
-                                swp_entry_t entry, unsigned long idx)
-{
-       struct shared_policy *p = &info->policy;
-       int i, num;
-       struct page *page;
-       unsigned long offset;
-
-       num = valid_swaphandles(entry, &offset);
-       for (i = 0; i < num; offset++, i++) {
-               page = shmem_swapin_async(p,
-                               swp_entry(swp_type(entry), offset), idx);
-               if (!page)
-                       break;
-               page_cache_release(page);
-       }
-       lru_add_drain();        /* Push any new pages onto the LRU now */
-       return shmem_swapin_async(p, entry, idx);
-}
-
-static struct page *
-shmem_alloc_page(gfp_t gfp, struct shmem_inode_info *info,
-                unsigned long idx)
+static struct page *shmem_alloc_page(gfp_t gfp, struct shmem_inode_info *info,
+                                       unsigned long idx)
 {
        struct vm_area_struct pvma;
        struct page *page;
 
-       memset(&pvma, 0, sizeof(struct vm_area_struct));
-       pvma.vm_policy = mpol_shared_policy_lookup(&info->policy, idx);
+       /* Create a pseudo vma that just contains the policy */
+       pvma.vm_start = 0;
        pvma.vm_pgoff = idx;
-       pvma.vm_end = PAGE_SIZE;
+       pvma.vm_ops = NULL;
+       pvma.vm_policy = mpol_shared_policy_lookup(&info->policy, idx);
        page = alloc_page_vma(gfp, &pvma, 0);
        mpol_free(pvma.vm_policy);
        return page;