vmscan: rename sc.may_swap to may_unmap
[linux-2.6.git] / mm / vmscan.c
index 479e467..1bca60f 100644 (file)
@@ -60,8 +60,8 @@ struct scan_control {
 
        int may_writepage;
 
-       /* Can pages be swapped as part of reclaim? */
-       int may_swap;
+       /* Can mapped pages be reclaimed? */
+       int may_unmap;
 
        /* This context's SWAP_CLUSTER_MAX. If freeing memory for
         * suspend, we effectively ignore SWAP_CLUSTER_MAX.
@@ -606,7 +606,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
                if (unlikely(!page_evictable(page, NULL)))
                        goto cull_mlocked;
 
-               if (!sc->may_swap && page_mapped(page))
+               if (!sc->may_unmap && page_mapped(page))
                        goto keep_locked;
 
                /* Double the slab pressure for mapped and swapcache pages */
@@ -1694,7 +1694,7 @@ unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
                .gfp_mask = gfp_mask,
                .may_writepage = !laptop_mode,
                .swap_cluster_max = SWAP_CLUSTER_MAX,
-               .may_swap = 1,
+               .may_unmap = 1,
                .swappiness = vm_swappiness,
                .order = order,
                .mem_cgroup = NULL,
@@ -1713,7 +1713,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
 {
        struct scan_control sc = {
                .may_writepage = !laptop_mode,
-               .may_swap = 1,
+               .may_unmap = 1,
                .swap_cluster_max = SWAP_CLUSTER_MAX,
                .swappiness = swappiness,
                .order = 0,
@@ -1723,7 +1723,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont,
        struct zonelist *zonelist;
 
        if (noswap)
-               sc.may_swap = 0;
+               sc.may_unmap = 0;
 
        sc.gfp_mask = (gfp_mask & GFP_RECLAIM_MASK) |
                        (GFP_HIGHUSER_MOVABLE & ~GFP_RECLAIM_MASK);
@@ -1762,7 +1762,7 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order)
        struct reclaim_state *reclaim_state = current->reclaim_state;
        struct scan_control sc = {
                .gfp_mask = GFP_KERNEL,
-               .may_swap = 1,
+               .may_unmap = 1,
                .swap_cluster_max = SWAP_CLUSTER_MAX,
                .swappiness = vm_swappiness,
                .order = order,
@@ -2110,7 +2110,7 @@ unsigned long shrink_all_memory(unsigned long nr_pages)
        struct reclaim_state reclaim_state;
        struct scan_control sc = {
                .gfp_mask = GFP_KERNEL,
-               .may_swap = 0,
+               .may_unmap = 0,
                .swap_cluster_max = nr_pages,
                .may_writepage = 1,
                .isolate_pages = isolate_pages_global,
@@ -2147,7 +2147,7 @@ unsigned long shrink_all_memory(unsigned long nr_pages)
 
                /* Force reclaiming mapped pages in the passes #3 and #4 */
                if (pass > 2)
-                       sc.may_swap = 1;
+                       sc.may_unmap = 1;
 
                for (prio = DEF_PRIORITY; prio >= 0; prio--) {
                        unsigned long nr_to_scan = nr_pages - ret;
@@ -2290,7 +2290,7 @@ static int __zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
        int priority;
        struct scan_control sc = {
                .may_writepage = !!(zone_reclaim_mode & RECLAIM_WRITE),
-               .may_swap = !!(zone_reclaim_mode & RECLAIM_SWAP),
+               .may_unmap = !!(zone_reclaim_mode & RECLAIM_SWAP),
                .swap_cluster_max = max_t(unsigned long, nr_pages,
                                        SWAP_CLUSTER_MAX),
                .gfp_mask = gfp_mask,