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new helper: msg_data_left()

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convert open-coded instances

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2014-12-15 21:39:31 -05:00
parent a2dd3793a1
commit 01e97e6517
8 changed files with 27 additions and 23 deletions
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4
crypto/algif_hash.c
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@@ -56,8 +56,8 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg,
ctx->more = 0;
while (iov_iter_count(&msg->msg_iter)) {
int len = iov_iter_count(&msg->msg_iter);
while (msg_data_left(msg)) {
int len = msg_data_left(msg);
if (len > limit)
len = limit;

4
crypto/algif_skcipher.c
View File

@@ -641,7 +641,7 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
long copied = 0;
lock_sock(sk);
while (iov_iter_count(&msg->msg_iter)) {
while (msg_data_left(msg)) {
sgl = list_first_entry(&ctx->tsgl,
struct skcipher_sg_list, list);
sg = sgl->sg;
@@ -655,7 +655,7 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
goto unlock;
}
used = min_t(unsigned long, ctx->used, iov_iter_count(&msg->msg_iter));
used = min_t(unsigned long, ctx->used, msg_data_left(msg));
used = af_alg_make_sg(&ctx->rsgl, &msg->msg_iter, used);
err = used;