[PATCH] Swap Migration V5: PF_SWAPWRITE to allow writing to swap

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

diff --git a/mm/highmem.c b/mm/highmem.c
index d012765..ce2e7e8 100644 (file)
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -30,11 +30,9 @@
 
 static mempool_t *page_pool, *isa_page_pool;
 
-static void *page_pool_alloc(unsigned int __nocast gfp_mask, void *data)
+static void *page_pool_alloc_isa(gfp_t gfp_mask, void *data)
 {
-       unsigned int gfp = gfp_mask | (unsigned int) (long) data;
-
-       return alloc_page(gfp);
+       return alloc_page(gfp_mask | GFP_DMA);
 }
 
 static void page_pool_free(void *page, void *data)
@@ -51,6 +49,12 @@ static void page_pool_free(void *page, void *data)
  *  n means that there are (n-1) current users of it.
  */
 #ifdef CONFIG_HIGHMEM
+
+static void *page_pool_alloc(gfp_t gfp_mask, void *data)
+{
+       return alloc_page(gfp_mask);
+}
+
 static int pkmap_count[LAST_PKMAP];
 static unsigned int last_pkmap_nr;
 static  __cacheline_aligned_in_smp DEFINE_SPINLOCK(kmap_lock);
@@ -267,7 +271,7 @@ int init_emergency_isa_pool(void)
        if (isa_page_pool)
                return 0;
 
-       isa_page_pool = mempool_create(ISA_POOL_SIZE, page_pool_alloc, page_pool_free, (void *) __GFP_DMA);
+       isa_page_pool = mempool_create(ISA_POOL_SIZE, page_pool_alloc_isa, page_pool_free, NULL);
        if (!isa_page_pool)
                BUG();
 
@@ -325,6 +329,7 @@ static void bounce_end_io(struct bio *bio, mempool_t *pool, int err)
                        continue;
 
                mempool_free(bvec->bv_page, pool);      
+               dec_page_state(nr_bounce);
        }
 
        bio_endio(bio_orig, bio_orig->bi_size, err);
@@ -405,6 +410,7 @@ static void __blk_queue_bounce(request_queue_t *q, struct bio **bio_orig,
                to->bv_page = mempool_alloc(pool, q->bounce_gfp);
                to->bv_len = from->bv_len;
                to->bv_offset = from->bv_offset;
+               inc_page_state(nr_bounce);
 
                if (rw == WRITE) {
                        char *vto, *vfrom;