AcoSail/kernel_optimize_test
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afs_send_pages(): use ITER_BVEC

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-01-09 20:36:51 -05:00
parent be6e4d66f0
commit 39c6aceae9
1 changed files with 7 additions and 8 deletions
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15
fs/afs/rxrpc.c
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@ -249,8 +249,7 @@ void afs_flat_call_destructor(struct afs_call *call)
/*
* attach the data from a bunch of pages on an inode to a call
*/
static int afs_send_pages(struct afs_call *call, struct msghdr *msg,
struct kvec *iov)
static int afs_send_pages(struct afs_call *call, struct msghdr *msg)
{
struct page *pages[8];
unsigned count, n, loop, offset, to;
@ -273,20 +272,21 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg,
loop = 0;
do {
struct bio_vec bvec = {.bv_page = pages[loop],
.bv_offset = offset};
msg->msg_flags = 0;
to = PAGE_SIZE;
if (first + loop >= last)
to = call->last_to;
else
msg->msg_flags = MSG_MORE;
iov->iov_base = kmap(pages[loop]) + offset;
iov->iov_len = to - offset;
bvec.bv_len = to - offset;
offset = 0;
_debug("- range %u-%u%s",
offset, to, msg->msg_flags ? " [more]" : "");
iov_iter_kvec(&msg->msg_iter, WRITE | ITER_KVEC,
iov, 1, to - offset);
iov_iter_bvec(&msg->msg_iter, WRITE | ITER_BVEC,
&bvec, 1, to - offset);
/* have to change the state *before* sending the last
* packet as RxRPC might give us the reply before it
@ -295,7 +295,6 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg,
call->state = AFS_CALL_AWAIT_REPLY;
ret = rxrpc_kernel_send_data(afs_socket, call->rxcall,
msg, to - offset);
kunmap(pages[loop]);
if (ret < 0)
break;
} while (++loop < count);
@ -379,7 +378,7 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp,
goto error_do_abort;
if (call->send_pages) {
ret = afs_send_pages(call, &msg, iov);
ret = afs_send_pages(call, &msg);
if (ret < 0)
goto error_do_abort;
}