rename thread_info to stack

[powerpc.git] / mm / shmem.c

diff --git a/mm/shmem.c b/mm/shmem.c
index 578ecea..f01e8de 100644 (file)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -674,8 +674,16 @@ done2:
                 * generic_delete_inode did it, before we lowered next_index.
                 * Also, though shmem_getpage checks i_size before adding to
                 * cache, no recheck after: so fix the narrow window there too.
+                *
+                * Recalling truncate_inode_pages_range and unmap_mapping_range
+                * every time for punch_hole (which never got a chance to clear
+                * SHMEM_PAGEIN at the start of vmtruncate_range) is expensive,
+                * yet hardly ever necessary: try to optimize them out later.
                 */
                truncate_inode_pages_range(inode->i_mapping, start, end);
+               if (punch_hole)
+                       unmap_mapping_range(inode->i_mapping, start,
+                                                       end - start, 1);
        }
 
        spin_lock(&info->lock);
@@ -2350,8 +2358,7 @@ static void init_once(void *foo, struct kmem_cache *cachep,
 {
        struct shmem_inode_info *p = (struct shmem_inode_info *) foo;
 
-       if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
-           SLAB_CTOR_CONSTRUCTOR) {
+       if (flags & SLAB_CTOR_CONSTRUCTOR) {
                inode_init_once(&p->vfs_inode);
 #ifdef CONFIG_TMPFS_POSIX_ACL
                p->i_acl = NULL;