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libceph: use bvec_set_page to initialize bvecs 

Use the bvec_set_page helper to initialize bvecs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Link: https://lore.kernel.org/r/20230203150634.3199647-24-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-02-03 16:06:34 +01:00 committed by Jens Axboe
parent 58dfe14073
commit 1eb9cd1500
2 changed files with 13 additions and 22 deletions
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7
net/ceph/messenger_v1.c
View File

@ -40,15 +40,12 @@ static int ceph_tcp_recvmsg(struct socket *sock, void *buf, size_t len)
static int ceph_tcp_recvpage(struct socket *sock, struct page *page,
int page_offset, size_t length)
{
struct bio_vec bvec = {
.bv_page = page,
.bv_offset = page_offset,
.bv_len = length
};
struct bio_vec bvec;
struct msghdr msg = { .msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL };
int r;
BUG_ON(page_offset + length > PAGE_SIZE);
bvec_set_page(&bvec, page, length, page_offset);
iov_iter_bvec(&msg.msg_iter, ITER_DEST, &bvec, 1, length);
r = sock_recvmsg(sock, &msg, msg.msg_flags);
if (r == -EAGAIN)

28
net/ceph/messenger_v2.c
View File

@ -149,10 +149,10 @@ static int do_try_sendpage(struct socket *sock, struct iov_iter *it)
while (iov_iter_count(it)) {
/* iov_iter_iovec() for ITER_BVEC */
bv.bv_page = it->bvec->bv_page;
bv.bv_offset = it->bvec->bv_offset + it->iov_offset;
bv.bv_len = min(iov_iter_count(it),
it->bvec->bv_len - it->iov_offset);
bvec_set_page(&bv, it->bvec->bv_page,
min(iov_iter_count(it),
it->bvec->bv_len - it->iov_offset),
it->bvec->bv_offset + it->iov_offset);
/*
* sendpage cannot properly handle pages with
@ -286,9 +286,8 @@ static void set_out_bvec_zero(struct ceph_connection *con)
WARN_ON(iov_iter_count(&con->v2.out_iter));
WARN_ON(!con->v2.out_zero);
con->v2.out_bvec.bv_page = ceph_zero_page;
con->v2.out_bvec.bv_offset = 0;
con->v2.out_bvec.bv_len = min(con->v2.out_zero, (int)PAGE_SIZE);
bvec_set_page(&con->v2.out_bvec, ceph_zero_page,
min(con->v2.out_zero, (int)PAGE_SIZE), 0);
con->v2.out_iter_sendpage = true;
iov_iter_bvec(&con->v2.out_iter, ITER_SOURCE, &con->v2.out_bvec, 1,
con->v2.out_bvec.bv_len);
@ -863,10 +862,7 @@ static void get_bvec_at(struct ceph_msg_data_cursor *cursor,
/* get a piece of data, cursor isn't advanced */
page = ceph_msg_data_next(cursor, &off, &len);
bv->bv_page = page;
bv->bv_offset = off;
bv->bv_len = len;
bvec_set_page(bv, page, len, off);
}
static int calc_sg_cnt(void *buf, int buf_len)
@ -1855,9 +1851,8 @@ static void prepare_read_enc_page(struct ceph_connection *con)
con->v2.in_enc_resid);
WARN_ON(!con->v2.in_enc_resid);
bv.bv_page = con->v2.in_enc_pages[con->v2.in_enc_i];
bv.bv_offset = 0;
bv.bv_len = min(con->v2.in_enc_resid, (int)PAGE_SIZE);
bvec_set_page(&bv, con->v2.in_enc_pages[con->v2.in_enc_i],
min(con->v2.in_enc_resid, (int)PAGE_SIZE), 0);
set_in_bvec(con, &bv);
con->v2.in_enc_i++;
@ -2998,9 +2993,8 @@ static void queue_enc_page(struct ceph_connection *con)
con->v2.out_enc_resid);
WARN_ON(!con->v2.out_enc_resid);
bv.bv_page = con->v2.out_enc_pages[con->v2.out_enc_i];
bv.bv_offset = 0;
bv.bv_len = min(con->v2.out_enc_resid, (int)PAGE_SIZE);
bvec_set_page(&bv, con->v2.out_enc_pages[con->v2.out_enc_i],
min(con->v2.out_enc_resid, (int)PAGE_SIZE), 0);
set_out_bvec(con, &bv, false);
con->v2.out_enc_i++;