Merge branch 'master'

9 files changed, 30 insertions, 62 deletions

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 28c1a628621..cf663105668 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -15,7 +15,7 @@
 #include <linux/crypto.h>
 #include <linux/workqueue.h>
 #include <asm/atomic.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
 #include <asm/page.h>
 
 #include "dm.h"
@@ -164,9 +164,7 @@ static int crypt_iv_essiv_ctr(struct crypt_config *cc, struct dm_target *ti,
 		return -ENOMEM;
 	}
 
-	sg.page = virt_to_page(cc->key);
-	sg.offset = offset_in_page(cc->key);
-	sg.length = cc->key_size;
+	sg_set_buf(&sg, cc->key, cc->key_size);
 	crypto_digest_digest(hash_tfm, &sg, 1, salt);
 	crypto_free_tfm(hash_tfm);
 
@@ -207,14 +205,12 @@ static void crypt_iv_essiv_dtr(struct crypt_config *cc)
 
 static int crypt_iv_essiv_gen(struct crypt_config *cc, u8 *iv, sector_t sector)
 {
-	struct scatterlist sg = { NULL, };
+	struct scatterlist sg;
 
 	memset(iv, 0, cc->iv_size);
 	*(u64 *)iv = cpu_to_le64(sector);
 
-	sg.page = virt_to_page(iv);
-	sg.offset = offset_in_page(iv);
-	sg.length = cc->iv_size;
+	sg_set_buf(&sg, iv, cc->iv_size);
 	crypto_cipher_encrypt((struct crypto_tfm *)cc->iv_gen_private,
 	                      &sg, &sg, cc->iv_size);
 
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index bb279fad2fd..946efef3a8f 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -271,6 +271,7 @@ static int linear_stop (mddev_t *mddev)
 
 static int linear_make_request (request_queue_t *q, struct bio *bio)
 {
+	const int rw = bio_data_dir(bio);
 	mddev_t *mddev = q->queuedata;
 	dev_info_t *tmp_dev;
 	sector_t block;
@@ -280,13 +281,8 @@ static int linear_make_request (request_queue_t *q, struct bio *bio)
 		return 0;
 	}
 
-	if (bio_data_dir(bio)==WRITE) {
-		disk_stat_inc(mddev->gendisk, writes);
-		disk_stat_add(mddev->gendisk, write_sectors, bio_sectors(bio));
-	} else {
-		disk_stat_inc(mddev->gendisk, reads);
-		disk_stat_add(mddev->gendisk, read_sectors, bio_sectors(bio));
-	}
+	disk_stat_inc(mddev->gendisk, ios[rw]);
+	disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
 
 	tmp_dev = which_dev(mddev, bio->bi_sector);
 	block = bio->bi_sector >> 1;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 2a8a5696bf8..9ecf51ee596 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3466,8 +3466,8 @@ static int is_mddev_idle(mddev_t *mddev)
 	idle = 1;
 	ITERATE_RDEV(mddev,rdev,tmp) {
 		struct gendisk *disk = rdev->bdev->bd_contains->bd_disk;
-		curr_events = disk_stat_read(disk, read_sectors) + 
-				disk_stat_read(disk, write_sectors) - 
+		curr_events = disk_stat_read(disk, sectors[0]) + 
+				disk_stat_read(disk, sectors[1]) - 
 				atomic_read(&disk->sync_io);
 		/* Allow some slack between valud of curr_events and last_events,
 		 * as there are some uninteresting races.
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 1151c3ed300..c06f4474192 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -168,6 +168,7 @@ static int multipath_make_request (request_queue_t *q, struct bio * bio)
 	multipath_conf_t *conf = mddev_to_conf(mddev);
 	struct multipath_bh * mp_bh;
 	struct multipath_info *multipath;
+	const int rw = bio_data_dir(bio);
 
 	if (unlikely(bio_barrier(bio))) {
 		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
@@ -179,13 +180,8 @@ static int multipath_make_request (request_queue_t *q, struct bio * bio)
 	mp_bh->master_bio = bio;
 	mp_bh->mddev = mddev;
 
-	if (bio_data_dir(bio)==WRITE) {
-		disk_stat_inc(mddev->gendisk, writes);
-		disk_stat_add(mddev->gendisk, write_sectors, bio_sectors(bio));
-	} else {
-		disk_stat_inc(mddev->gendisk, reads);
-		disk_stat_add(mddev->gendisk, read_sectors, bio_sectors(bio));
-	}
+	disk_stat_inc(mddev->gendisk, ios[rw]);
+	disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
 
 	mp_bh->path = multipath_map(conf);
 	if (mp_bh->path < 0) {
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index f6757259ce7..fece3277c2a 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -403,19 +403,15 @@ static int raid0_make_request (request_queue_t *q, struct bio *bio)
 	mdk_rdev_t *tmp_dev;
 	unsigned long chunk;
 	sector_t block, rsect;
+	const int rw = bio_data_dir(bio);
 
 	if (unlikely(bio_barrier(bio))) {
 		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
 		return 0;
 	}
 
-	if (bio_data_dir(bio)==WRITE) {
-		disk_stat_inc(mddev->gendisk, writes);
-		disk_stat_add(mddev->gendisk, write_sectors, bio_sectors(bio));
-	} else {
-		disk_stat_inc(mddev->gendisk, reads);
-		disk_stat_add(mddev->gendisk, read_sectors, bio_sectors(bio));
-	}
+	disk_stat_inc(mddev->gendisk, ios[rw]);
+	disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
 
 	chunk_size = mddev->chunk_size >> 10;
 	chunk_sects = mddev->chunk_size >> 9;
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 0e1f148dd41..e16f473bcf4 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -647,6 +647,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
 	unsigned long flags;
 	struct bio_list bl;
 	struct page **behind_pages = NULL;
+	const int rw = bio_data_dir(bio);
 
 	if (unlikely(bio_barrier(bio))) {
 		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
@@ -665,13 +666,8 @@ static int make_request(request_queue_t *q, struct bio * bio)
 	conf->nr_pending++;
 	spin_unlock_irq(&conf->resync_lock);
 
-	if (bio_data_dir(bio)==WRITE) {
-		disk_stat_inc(mddev->gendisk, writes);
-		disk_stat_add(mddev->gendisk, write_sectors, bio_sectors(bio));
-	} else {
-		disk_stat_inc(mddev->gendisk, reads);
-		disk_stat_add(mddev->gendisk, read_sectors, bio_sectors(bio));
-	}
+	disk_stat_inc(mddev->gendisk, ios[rw]);
+	disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
 
 	/*
 	 * make_request() can abort the operation when READA is being
@@ -686,7 +682,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
 	r1_bio->mddev = mddev;
 	r1_bio->sector = bio->bi_sector;
 
-	if (bio_data_dir(bio) == READ) {
+	if (rw == READ) {
 		/*
 		 * read balancing logic:
 		 */
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 28dd028415e..bbe40e9cf92 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -668,6 +668,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
 	struct bio *read_bio;
 	int i;
 	int chunk_sects = conf->chunk_mask + 1;
+	const int rw = bio_data_dir(bio);
 
 	if (unlikely(bio_barrier(bio))) {
 		bio_endio(bio, bio->bi_size, -EOPNOTSUPP);
@@ -718,13 +719,8 @@ static int make_request(request_queue_t *q, struct bio * bio)
 	conf->nr_pending++;
 	spin_unlock_irq(&conf->resync_lock);
 
-	if (bio_data_dir(bio)==WRITE) {
-		disk_stat_inc(mddev->gendisk, writes);
-		disk_stat_add(mddev->gendisk, write_sectors, bio_sectors(bio));
-	} else {
-		disk_stat_inc(mddev->gendisk, reads);
-		disk_stat_add(mddev->gendisk, read_sectors, bio_sectors(bio));
-	}
+	disk_stat_inc(mddev->gendisk, ios[rw]);
+	disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bio));
 
 	r10_bio = mempool_alloc(conf->r10bio_pool, GFP_NOIO);
 
@@ -734,7 +730,7 @@ static int make_request(request_queue_t *q, struct bio * bio)
 	r10_bio->mddev = mddev;
 	r10_bio->sector = bio->bi_sector;
 
-	if (bio_data_dir(bio) == READ) {
+	if (rw == READ) {
 		/*
 		 * read balancing logic:
 		 */
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 4683ca24c04..6497295ebfb 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1462,6 +1462,7 @@ static int make_request (request_queue_t *q, struct bio * bi)
 	sector_t new_sector;
 	sector_t logical_sector, last_sector;
 	struct stripe_head *sh;
+	const int rw = bio_data_dir(bi);
 
 	if (unlikely(bio_barrier(bi))) {
 		bio_endio(bi, bi->bi_size, -EOPNOTSUPP);
@@ -1470,13 +1471,8 @@ static int make_request (request_queue_t *q, struct bio * bi)
 
 	md_write_start(mddev, bi);
 
-	if (bio_data_dir(bi)==WRITE) {
-		disk_stat_inc(mddev->gendisk, writes);
-		disk_stat_add(mddev->gendisk, write_sectors, bio_sectors(bi));
-	} else {
-		disk_stat_inc(mddev->gendisk, reads);
-		disk_stat_add(mddev->gendisk, read_sectors, bio_sectors(bi));
-	}
+	disk_stat_inc(mddev->gendisk, ios[rw]);
+	disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bi));
 
 	logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1);
 	last_sector = bi->bi_sector + (bi->bi_size>>9);
diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index 267eb1430c8..6437a95ffc1 100644
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -1621,6 +1621,7 @@ static int make_request (request_queue_t *q, struct bio * bi)
 	sector_t new_sector;
 	sector_t logical_sector, last_sector;
 	struct stripe_head *sh;
+	const int rw = bio_data_dir(bi);
 
 	if (unlikely(bio_barrier(bi))) {
 		bio_endio(bi, bi->bi_size, -EOPNOTSUPP);
@@ -1629,13 +1630,8 @@ static int make_request (request_queue_t *q, struct bio * bi)
 
 	md_write_start(mddev, bi);
 
-	if (bio_data_dir(bi)==WRITE) {
-		disk_stat_inc(mddev->gendisk, writes);
-		disk_stat_add(mddev->gendisk, write_sectors, bio_sectors(bi));
-	} else {
-		disk_stat_inc(mddev->gendisk, reads);
-		disk_stat_add(mddev->gendisk, read_sectors, bio_sectors(bi));
-	}
+	disk_stat_inc(mddev->gendisk, ios[rw]);
+	disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bi));
 
 	logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1);
 	last_sector = bi->bi_sector + (bi->bi_size>>9);
@@ -1682,7 +1678,7 @@ static int make_request (request_queue_t *q, struct bio * bi)
 	if (--bi->bi_phys_segments == 0) {
 		int bytes = bi->bi_size;
 
-		if ( bio_data_dir(bi) == WRITE )
+		if (rw == WRITE )
 			md_write_end(mddev);
 		bi->bi_size = 0;
 		bi->bi_end_io(bi, bytes, 0);