netdev - [PATCH 13/23] cifs: use bvec_set

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Message-Id: <20230130092157.1759539-14-hch@lst.de>
Date:   Mon, 30 Jan 2023 10:21:47 +0100
From:   Christoph Hellwig <hch@....de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Ilya Dryomov <idryomov@...il.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Minchan Kim <minchan@...nel.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Keith Busch <kbusch@...nel.org>,
        Sagi Grimberg <sagi@...mberg.me>,
        Chaitanya Kulkarni <kch@...dia.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        David Howells <dhowells@...hat.com>,
        Marc Dionne <marc.dionne@...istor.com>,
        Xiubo Li <xiubli@...hat.com>, Steve French <sfrench@...ba.org>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <anna@...nel.org>,
        Mike Marshall <hubcap@...ibond.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Chuck Lever <chuck.lever@...cle.com>,
        linux-block@...r.kernel.org, ceph-devel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-nvme@...ts.infradead.org, linux-scsi@...r.kernel.org,
        target-devel@...r.kernel.org, kvm@...r.kernel.org,
        netdev@...r.kernel.org, linux-afs@...ts.infradead.org,
        linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
        linux-fsdevel@...r.kernel.org, linux-nfs@...r.kernel.org,
        devel@...ts.orangefs.org, io-uring@...r.kernel.org,
        linux-mm@...ck.org
Subject: [PATCH 13/23] cifs: use bvec_set_page to initialize bvecs

Use the bvec_set_page helper to initialize bvecs.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 fs/cifs/connect.c |  5 +++--
 fs/cifs/fscache.c | 16 ++++++----------
 fs/cifs/misc.c    |  5 ++---
 fs/cifs/smb2ops.c |  6 +++---
 4 files changed, 14 insertions(+), 18 deletions(-)

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index b2a04b4e89a5e7..e6088d96eb04d2 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -759,8 +759,9 @@ cifs_read_page_from_socket(struct TCP_Server_Info *server, struct page *page,
 	unsigned int page_offset, unsigned int to_read)
 {
 	struct msghdr smb_msg = {};
-	struct bio_vec bv = {
-		.bv_page = page, .bv_len = to_read, .bv_offset = page_offset};
+	struct bio_vec bv;
+
+	bvec_set_page(&bv, page, to_read, page_offset);
 	iov_iter_bvec(&smb_msg.msg_iter, ITER_DEST, &bv, 1, to_read);
 	return cifs_readv_from_socket(server, &smb_msg);
 }
diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c
index f6f3a6b75601be..0911327ebfdeb4 100644
--- a/fs/cifs/fscache.c
+++ b/fs/cifs/fscache.c
@@ -143,14 +143,12 @@ static int fscache_fallback_read_page(struct inode *inode, struct page *page)
 	struct netfs_cache_resources cres;
 	struct fscache_cookie *cookie = cifs_inode_cookie(inode);
 	struct iov_iter iter;
-	struct bio_vec bvec[1];
+	struct bio_vec bvec;
 	int ret;
 
 	memset(&cres, 0, sizeof(cres));
-	bvec[0].bv_page		= page;
-	bvec[0].bv_offset	= 0;
-	bvec[0].bv_len		= PAGE_SIZE;
-	iov_iter_bvec(&iter, ITER_DEST, bvec, ARRAY_SIZE(bvec), PAGE_SIZE);
+	bvec_set_page(&bvec, page, PAGE_SIZE, 0);
+	iov_iter_bvec(&iter, ITER_DEST, &bvec, 1, PAGE_SIZE);
 
 	ret = fscache_begin_read_operation(&cres, cookie);
 	if (ret < 0)
@@ -171,16 +169,14 @@ static int fscache_fallback_write_page(struct inode *inode, struct page *page,
 	struct netfs_cache_resources cres;
 	struct fscache_cookie *cookie = cifs_inode_cookie(inode);
 	struct iov_iter iter;
-	struct bio_vec bvec[1];
+	struct bio_vec bvec;
 	loff_t start = page_offset(page);
 	size_t len = PAGE_SIZE;
 	int ret;
 
 	memset(&cres, 0, sizeof(cres));
-	bvec[0].bv_page		= page;
-	bvec[0].bv_offset	= 0;
-	bvec[0].bv_len		= PAGE_SIZE;
-	iov_iter_bvec(&iter, ITER_SOURCE, bvec, ARRAY_SIZE(bvec), PAGE_SIZE);
+	bvec_set_page(&bvec, page, PAGE_SIZE, 0);
+	iov_iter_bvec(&iter, ITER_SOURCE, &bvec, 1, PAGE_SIZE);
 
 	ret = fscache_begin_write_operation(&cres, cookie);
 	if (ret < 0)
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 2a19c7987c5bd8..95cc4d7dd806d7 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -1054,9 +1054,8 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw)
 
 		for (i = 0; i < cur_npages; i++) {
 			len = rc > PAGE_SIZE ? PAGE_SIZE : rc;
-			bv[npages + i].bv_page = pages[i];
-			bv[npages + i].bv_offset = start;
-			bv[npages + i].bv_len = len - start;
+			bvec_set_page(&bv[npages + i], pages[i], len - start,
+				      start);
 			rc -= len;
 			start = 0;
 		}
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index e6bcd2baf446a9..cb2deac6b2d70e 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -4598,9 +4598,9 @@ init_read_bvec(struct page **pages, unsigned int npages, unsigned int data_size,
 		return -ENOMEM;
 
 	for (i = 0; i < npages; i++) {
-		bvec[i].bv_page = pages[i];
-		bvec[i].bv_offset = (i == 0) ? cur_off : 0;
-		bvec[i].bv_len = min_t(unsigned int, PAGE_SIZE, data_size);
+		bvec_set_page(&bvec[i], pages[i],
+			      min_t(unsigned int, PAGE_SIZE, data_size),
+			      i == 0 ? cur_off : 0);
 		data_size -= bvec[i].bv_len;
 	}
 
-- 
2.39.0