Commit 1eb9cd15 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

libceph: use bvec_set_page to initialize bvecs 



Use the bvec_set_page helper to initialize bvecs.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarIlya Dryomov <idryomov@gmail.com>
Link: https://lore.kernel.org/r/20230203150634.3199647-24-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 58dfe140

net/ceph/messenger_v1.c

+2 −5
Original line number Diff line number Diff line
@@ -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)

net/ceph/messenger_v2.c

+11 −17
Original line number Diff line number Diff line
@@ -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++;