Merge branch 'sg' of git://git.kernel.dk/linux-2.6-block

* 'sg' of git://git.kernel.dk/linux-2.6-block:
  Add CONFIG_DEBUG_SG sg validation
  Change table chaining layout
  Update arch/ to use sg helpers
  Update swiotlb to use sg helpers
  Update net/ to use sg helpers
  Update fs/ to use sg helpers
  [SG] Update drivers to use sg helpers
  [SG] Update crypto/ to sg helpers
  [SG] Update block layer to use sg helpers
  [SG] Add helpers for manipulating SG entries

9 files changed, 25 insertions, 33 deletions

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 70d9b5da96ae..4e2c84fcf276 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2045,7 +2045,7 @@ skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
         if (copy > 0) {
                 if (copy > len)
                         copy = len;
-                sg[elt].page = virt_to_page(skb->data + offset);
+                sg_set_page(&sg[elt], virt_to_page(skb->data + offset));
                 sg[elt].offset = (unsigned long)(skb->data + offset) % PAGE_SIZE;
                 sg[elt].length = copy;
                 elt++;
@@ -2065,7 +2065,7 @@ skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
 
                         if (copy > len)
                                 copy = len;
-                        sg[elt].page = frag->page;
+                        sg_set_page(&sg[elt], frag->page);
                         sg[elt].offset = frag->page_offset+offset-start;
                         sg[elt].length = copy;
                         elt++;
diff --git a/net/ieee80211/ieee80211_crypt_tkip.c b/net/ieee80211/ieee80211_crypt_tkip.c
index 72e6ab66834f..c796661a021b 100644
--- a/net/ieee80211/ieee80211_crypt_tkip.c
+++ b/net/ieee80211/ieee80211_crypt_tkip.c
@@ -390,9 +390,7 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
         icv[3] = crc >> 24;
 
         crypto_blkcipher_setkey(tkey->tx_tfm_arc4, rc4key, 16);
-        sg.page = virt_to_page(pos);
-        sg.offset = offset_in_page(pos);
-        sg.length = len + 4;
+        sg_init_one(&sg, pos, len + 4);
         return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
 }
 
@@ -485,9 +483,7 @@ static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
         plen = skb->len - hdr_len - 12;
 
         crypto_blkcipher_setkey(tkey->rx_tfm_arc4, rc4key, 16);
-        sg.page = virt_to_page(pos);
-        sg.offset = offset_in_page(pos);
-        sg.length = plen + 4;
+        sg_init_one(&sg, pos, plen + 4);
         if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4)) {
                 if (net_ratelimit()) {
                         printk(KERN_DEBUG ": TKIP: failed to decrypt "
@@ -539,11 +535,12 @@ static int michael_mic(struct crypto_hash *tfm_michael, u8 * key, u8 * hdr,
                 printk(KERN_WARNING "michael_mic: tfm_michael == NULL\n");
                 return -1;
         }
-        sg[0].page = virt_to_page(hdr);
+        sg_init_table(sg, 2);
+        sg_set_page(&sg[0], virt_to_page(hdr));
         sg[0].offset = offset_in_page(hdr);
         sg[0].length = 16;
 
-        sg[1].page = virt_to_page(data);
+        sg_set_page(&sg[1], virt_to_page(data));
         sg[1].offset = offset_in_page(data);
         sg[1].length = data_len;
 
diff --git a/net/ieee80211/ieee80211_crypt_wep.c b/net/ieee80211/ieee80211_crypt_wep.c
index 8d182459344e..0af6103d715c 100644
--- a/net/ieee80211/ieee80211_crypt_wep.c
+++ b/net/ieee80211/ieee80211_crypt_wep.c
@@ -170,9 +170,7 @@ static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
         icv[3] = crc >> 24;
 
         crypto_blkcipher_setkey(wep->tx_tfm, key, klen);
-        sg.page = virt_to_page(pos);
-        sg.offset = offset_in_page(pos);
-        sg.length = len + 4;
+        sg_init_one(&sg, pos, len + 4);
         return crypto_blkcipher_encrypt(&desc, &sg, &sg, len + 4);
 }
 
@@ -212,9 +210,7 @@ static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
         plen = skb->len - hdr_len - 8;
 
         crypto_blkcipher_setkey(wep->rx_tfm, key, klen);
-        sg.page = virt_to_page(pos);
-        sg.offset = offset_in_page(pos);
-        sg.length = plen + 4;
+        sg_init_one(&sg, pos, plen + 4);
         if (crypto_blkcipher_decrypt(&desc, &sg, &sg, plen + 4))
                 return -7;
 
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index 6675261e958f..cc806d640f7a 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -138,9 +138,7 @@ void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
         *icv = cpu_to_le32(~crc32_le(~0, data, data_len));
 
         crypto_blkcipher_setkey(tfm, rc4key, klen);
-        sg.page = virt_to_page(data);
-        sg.offset = offset_in_page(data);
-        sg.length = data_len + WEP_ICV_LEN;
+        sg_init_one(&sg, data, data_len + WEP_ICV_LEN);
         crypto_blkcipher_encrypt(&desc, &sg, &sg, sg.length);
 }
 
@@ -204,9 +202,7 @@ int ieee80211_wep_decrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
         __le32 crc;
 
         crypto_blkcipher_setkey(tfm, rc4key, klen);
-        sg.page = virt_to_page(data);
-        sg.offset = offset_in_page(data);
-        sg.length = data_len + WEP_ICV_LEN;
+        sg_init_one(&sg, data, data_len + WEP_ICV_LEN);
         crypto_blkcipher_decrypt(&desc, &sg, &sg, sg.length);
 
         crc = cpu_to_le32(~crc32_le(~0, data, data_len));
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 781810724714..cbd64b216cce 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -726,7 +726,8 @@ void sctp_auth_calculate_hmac(const struct sctp_association *asoc,
 
         /* set up scatter list */
         end = skb_tail_pointer(skb);
-        sg.page = virt_to_page(auth);
+        sg_init_table(&sg, 1);
+        sg_set_page(&sg, virt_to_page(auth));
         sg.offset = (unsigned long)(auth) % PAGE_SIZE;
         sg.length = end - (unsigned char *)auth;
 
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index f983a369d4e2..d5a9785a158b 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1513,7 +1513,8 @@ static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep,
                 struct hash_desc desc;
 
                 /* Sign the message.  */
-                sg.page = virt_to_page(&cookie->c);
+                sg_init_table(&sg, 1);
+                sg_set_page(&sg, virt_to_page(&cookie->c));
                 sg.offset = (unsigned long)(&cookie->c) % PAGE_SIZE;
                 sg.length = bodysize;
                 keylen = SCTP_SECRET_SIZE;
@@ -1585,7 +1586,8 @@ struct sctp_association *sctp_unpack_cookie(
 
         /* Check the signature.  */
         keylen = SCTP_SECRET_SIZE;
-        sg.page = virt_to_page(bear_cookie);
+        sg_init_table(&sg, 1);
+        sg_set_page(&sg, virt_to_page(bear_cookie));
         sg.offset = (unsigned long)(bear_cookie) % PAGE_SIZE;
         sg.length = bodysize;
         key = (char *)ep->secret_key[ep->current_key];
diff --git a/net/sunrpc/auth_gss/gss_krb5_crypto.c b/net/sunrpc/auth_gss/gss_krb5_crypto.c
index bfb6a29633dd..32be431affcf 100644
--- a/net/sunrpc/auth_gss/gss_krb5_crypto.c
+++ b/net/sunrpc/auth_gss/gss_krb5_crypto.c
@@ -197,9 +197,9 @@ encryptor(struct scatterlist *sg, void *data)
                 int i = (page_pos + outbuf->page_base) >> PAGE_CACHE_SHIFT;
                 in_page = desc->pages[i];
         } else {
-                in_page = sg->page;
+                in_page = sg_page(sg);
         }
-        desc->infrags[desc->fragno].page = in_page;
+        sg_set_page(&desc->infrags[desc->fragno], in_page);
         desc->fragno++;
         desc->fraglen += sg->length;
         desc->pos += sg->length;
@@ -215,11 +215,11 @@ encryptor(struct scatterlist *sg, void *data)
         if (ret)
                 return ret;
         if (fraglen) {
-                desc->outfrags[0].page = sg->page;
+                sg_set_page(&desc->outfrags[0], sg_page(sg));
                 desc->outfrags[0].offset = sg->offset + sg->length - fraglen;
                 desc->outfrags[0].length = fraglen;
                 desc->infrags[0] = desc->outfrags[0];
-                desc->infrags[0].page = in_page;
+                sg_set_page(&desc->infrags[0], in_page);
                 desc->fragno = 1;
                 desc->fraglen = fraglen;
         } else {
@@ -287,7 +287,7 @@ decryptor(struct scatterlist *sg, void *data)
         if (ret)
                 return ret;
         if (fraglen) {
-                desc->frags[0].page = sg->page;
+                sg_set_page(&desc->frags[0], sg_page(sg));
                 desc->frags[0].offset = sg->offset + sg->length - fraglen;
                 desc->frags[0].length = fraglen;
                 desc->fragno = 1;
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 6a59180e1667..3d1f7cdf9dd0 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -1059,7 +1059,7 @@ xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len,
                 do {
                         if (thislen > page_len)
                                 thislen = page_len;
-                        sg->page = buf->pages[i];
+                        sg_set_page(sg, buf->pages[i]);
                         sg->offset = page_offset;
                         sg->length = thislen;
                         ret = actor(sg, data);
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 5ced62c19c63..fb2220a719bd 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -552,7 +552,7 @@ int skb_icv_walk(const struct sk_buff *skb, struct hash_desc *desc,
                 if (copy > len)
                         copy = len;
 
-                sg.page = virt_to_page(skb->data + offset);
+                sg_set_page(&sg, virt_to_page(skb->data + offset));
                 sg.offset = (unsigned long)(skb->data + offset) % PAGE_SIZE;
                 sg.length = copy;
 
@@ -577,7 +577,7 @@ int skb_icv_walk(const struct sk_buff *skb, struct hash_desc *desc,
                         if (copy > len)
                                 copy = len;
 
-                        sg.page = frag->page;
+                        sg_set_page(&sg, frag->page);
                         sg.offset = frag->page_offset + offset-start;
                         sg.length = copy;