[PATCH] Use sg_set_buf/sg_init_one where applicable

This patch uses sg_set_buf/sg_init_one in some places where it was
duplicated.

Signed-off-by: David Hardeman <david@2gen.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Greg KH <greg@kroah.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 28c1a628621f..cf6631056683 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);