X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fbio.c;h=6a0b9ad8f8c9d031d4c32fb32e1c53e0677d1ef2;hb=fe7fa31aa0749d7d247d21e1880f0c5aea15b158;hp=73e664c01d30075064cc14b533d9d0d72b1d871f;hpb=368d17e068f691dba5a4f122c271db5ec9b2ebd6;p=linux-2.6

diff --git a/fs/bio.c b/fs/bio.c
index 73e664c01d..6a0b9ad8f8 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -30,7 +30,7 @@
 
 #define BIO_POOL_SIZE 256
 
-static kmem_cache_t *bio_slab;
+static kmem_cache_t *bio_slab __read_mostly;
 
 #define BIOVEC_NR_POOLS 6
 
@@ -39,7 +39,7 @@ static kmem_cache_t *bio_slab;
  * basically we just need to survive
  */
 #define BIO_SPLIT_ENTRIES 8	
-mempool_t *bio_split_pool;
+mempool_t *bio_split_pool __read_mostly;
 
 struct biovec_slab {
 	int nr_vecs;
@@ -654,9 +654,10 @@ static struct bio *__bio_map_user_iov(request_queue_t *q,
 				     write_to_vm, 0, &pages[cur_page], NULL);
 		up_read(&current->mm->mmap_sem);
 
-		if (ret < local_nr_pages)
+		if (ret < local_nr_pages) {
+			ret = -EFAULT;
 			goto out_unmap;
-
+		}
 
 		offset = uaddr & ~PAGE_MASK;
 		for (j = cur_page; j < page_limit; j++) {
@@ -1116,6 +1117,9 @@ struct bio_pair *bio_split(struct bio *bi, mempool_t *pool, int first_sectors)
 	bp->bio1.bi_io_vec = &bp->bv1;
 	bp->bio2.bi_io_vec = &bp->bv2;
 
+	bp->bio1.bi_max_vecs = 1;
+	bp->bio2.bi_max_vecs = 1;
+
 	bp->bio1.bi_end_io = bio_pair_end_1;
 	bp->bio2.bi_end_io = bio_pair_end_2;
 
@@ -1125,16 +1129,6 @@ struct bio_pair *bio_split(struct bio *bi, mempool_t *pool, int first_sectors)
 	return bp;
 }
 
-static void *bio_pair_alloc(gfp_t gfp_flags, void *data)
-{
-	return kmalloc(sizeof(struct bio_pair), gfp_flags);
-}
-
-static void bio_pair_free(void *bp, void *data)
-{
-	kfree(bp);
-}
-
 
 /*
  * create memory pools for biovec's in a bio_set.
@@ -1151,8 +1145,7 @@ static int biovec_create_pools(struct bio_set *bs, int pool_entries, int scale)
 		if (i >= scale)
 			pool_entries >>= 1;
 
-		*bvp = mempool_create(pool_entries, mempool_alloc_slab,
-					mempool_free_slab, bp->slab);
+		*bvp = mempool_create_slab_pool(pool_entries, bp->slab);
 		if (!*bvp)
 			return -ENOMEM;
 	}
@@ -1189,9 +1182,7 @@ struct bio_set *bioset_create(int bio_pool_size, int bvec_pool_size, int scale)
 	if (!bs)
 		return NULL;
 
-	bs->bio_pool = mempool_create(bio_pool_size, mempool_alloc_slab,
-			mempool_free_slab, bio_slab);
-
+	bs->bio_pool = mempool_create_slab_pool(bio_pool_size, bio_slab);
 	if (!bs->bio_pool)
 		goto bad;
 
@@ -1254,8 +1245,8 @@ static int __init init_bio(void)
 	if (!fs_bio_set)
 		panic("bio: can't allocate bios\n");
 
-	bio_split_pool = mempool_create(BIO_SPLIT_ENTRIES,
-				bio_pair_alloc, bio_pair_free, NULL);
+	bio_split_pool = mempool_create_kmalloc_pool(BIO_SPLIT_ENTRIES,
+						     sizeof(struct bio_pair));
 	if (!bio_split_pool)
 		panic("bio: can't create split pool\n");