X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fbio.c;h=1f2d4649b188015076353340055a4ebdd1e0a6b1;hb=0b2b35f68140ceeb1b78ef85680198e63ebc8649;hp=e5349e834563da07c948cc751d1bcd2598724e2a;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6

diff --git a/fs/bio.c b/fs/bio.c
index e5349e8345..1f2d4649b1 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -52,7 +52,7 @@ struct biovec_slab {
  */
 
 #define BV(x) { .nr_vecs = x, .name = "biovec-"__stringify(x) }
-static struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] = {
+static struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly = {
 	BV(1), BV(4), BV(16), BV(64), BV(128), BV(BIO_MAX_PAGES),
 };
 #undef BV
@@ -140,6 +140,7 @@ inline void bio_init(struct bio *bio)
  * bio_alloc_bioset - allocate a bio for I/O
  * @gfp_mask:   the GFP_ mask given to the slab allocator
  * @nr_iovecs:	number of iovecs to pre-allocate
+ * @bs:		the bio_set to allocate from
  *
  * Description:
  *   bio_alloc_bioset will first try it's on mempool to satisfy the allocation.
@@ -247,19 +248,16 @@ inline void __bio_clone(struct bio *bio, struct bio *bio_src)
 {
 	request_queue_t *q = bdev_get_queue(bio_src->bi_bdev);
 
-	memcpy(bio->bi_io_vec, bio_src->bi_io_vec, bio_src->bi_max_vecs * sizeof(struct bio_vec));
+	memcpy(bio->bi_io_vec, bio_src->bi_io_vec,
+		bio_src->bi_max_vecs * sizeof(struct bio_vec));
 
 	bio->bi_sector = bio_src->bi_sector;
 	bio->bi_bdev = bio_src->bi_bdev;
 	bio->bi_flags |= 1 << BIO_CLONED;
 	bio->bi_rw = bio_src->bi_rw;
-
-	/*
-	 * notes -- maybe just leave bi_idx alone. assume identical mapping
-	 * for the clone
-	 */
 	bio->bi_vcnt = bio_src->bi_vcnt;
 	bio->bi_size = bio_src->bi_size;
+	bio->bi_idx = bio_src->bi_idx;
 	bio_phys_segments(q, bio);
 	bio_hw_segments(q, bio);
 }
@@ -629,6 +627,7 @@ out:
 
 /**
  *	bio_map_user	-	map user address into bio
+ *	@q: the request_queue_t for the bio
  *	@bdev: destination block device
  *	@uaddr: start of user address
  *	@len: length in bytes