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Message-ID: <167391050409.2311931.7103784292954267373.stgit@warthog.procyon.org.uk>
Date: Mon, 16 Jan 2023 23:08:24 +0000
From: David Howells <dhowells@...hat.com>
To: Al Viro <viro@...iv.linux.org.uk>
Cc: dhowells@...hat.com, Christoph Hellwig <hch@...radead.org>,
Matthew Wilcox <willy@...radead.org>,
Jens Axboe <axboe@...nel.dk>, Jan Kara <jack@...e.cz>,
Jeff Layton <jlayton@...nel.org>,
Logan Gunthorpe <logang@...tatee.com>,
linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v6 03/34] iov_iter: Pass I/O direction into
iov_iter_get_pages*()
Define FOLL_SOURCE_BUF and FOLL_DEST_BUF to indicate to get_user_pages*()
and iov_iter_get_pages*() how the buffer is intended to be used in an I/O
operation. Don't use READ and WRITE as a read I/O writes to memory and
vice versa - which causes confusion.
The direction is checked against the iterator's data_source.
Signed-off-by: David Howells <dhowells@...hat.com>
---
block/bio.c | 6 ++++++
block/blk-map.c | 2 ++
crypto/af_alg.c | 9 ++++++---
crypto/algif_hash.c | 3 ++-
drivers/vhost/scsi.c | 9 ++++++---
fs/ceph/addr.c | 2 +-
fs/ceph/file.c | 14 ++++++++------
fs/cifs/file.c | 8 ++++----
fs/cifs/misc.c | 3 ++-
fs/direct-io.c | 6 ++++--
fs/fuse/dev.c | 3 ++-
fs/fuse/file.c | 8 ++++----
fs/nfs/direct.c | 10 ++++++----
fs/splice.c | 3 ++-
include/crypto/if_alg.h | 3 ++-
include/linux/bio.h | 18 ++++++++++++++++--
include/linux/mm.h | 10 ++++++++++
lib/iov_iter.c | 14 +++++++-------
net/9p/trans_virtio.c | 12 ++++++++----
net/core/datagram.c | 5 +++--
net/core/skmsg.c | 4 ++--
net/rds/message.c | 4 ++--
net/tls/tls_sw.c | 5 ++---
23 files changed, 107 insertions(+), 54 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index 5f96fcae3f75..867cf4db87ea 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1242,6 +1242,8 @@ static int bio_iov_add_zone_append_page(struct bio *bio, struct page *page,
* pages will have to be released using put_page() when done.
* For multi-segment *iter, this function only adds pages from the
* next non-empty segment of the iov iterator.
+ *
+ * The I/O direction is determined from the bio operation type.
*/
static int __bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)
{
@@ -1263,6 +1265,8 @@ static int __bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)
BUILD_BUG_ON(PAGE_PTRS_PER_BVEC < 2);
pages += entries_left * (PAGE_PTRS_PER_BVEC - 1);
+ gup_flags |= bio_is_write(bio) ? FOLL_SOURCE_BUF : FOLL_DEST_BUF;
+
if (bio->bi_bdev && blk_queue_pci_p2pdma(bio->bi_bdev->bd_disk->queue))
gup_flags |= FOLL_PCI_P2PDMA;
@@ -1332,6 +1336,8 @@ static int __bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)
* fit into the bio, or are requested in @iter, whatever is smaller. If
* MM encounters an error pinning the requested pages, it stops. Error
* is returned only if 0 pages could be pinned.
+ *
+ * The bio operation indicates the data direction.
*/
int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)
{
diff --git a/block/blk-map.c b/block/blk-map.c
index 08cbb7ff3b19..c30be529fb55 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -279,6 +279,8 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
if (bio == NULL)
return -ENOMEM;
+ gup_flags |= bio_is_write(bio) ? FOLL_SOURCE_BUF : FOLL_DEST_BUF;
+
if (blk_queue_pci_p2pdma(rq->q))
gup_flags |= FOLL_PCI_P2PDMA;
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 0a4fa2a429e2..7a68db157fae 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -531,13 +531,15 @@ static const struct net_proto_family alg_family = {
.owner = THIS_MODULE,
};
-int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len)
+int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len,
+ unsigned int gup_flags)
{
size_t off;
ssize_t n;
int npages, i;
- n = iov_iter_get_pages2(iter, sgl->pages, len, ALG_MAX_PAGES, &off);
+ n = iov_iter_get_pages(iter, sgl->pages, len, ALG_MAX_PAGES, &off,
+ gup_flags);
if (n < 0)
return n;
@@ -1310,7 +1312,8 @@ int af_alg_get_rsgl(struct sock *sk, struct msghdr *msg, int flags,
list_add_tail(&rsgl->list, &areq->rsgl_list);
/* make one iovec available as scatterlist */
- err = af_alg_make_sg(&rsgl->sgl, &msg->msg_iter, seglen);
+ err = af_alg_make_sg(&rsgl->sgl, &msg->msg_iter, seglen,
+ FOLL_DEST_BUF);
if (err < 0) {
rsgl->sg_num_bytes = 0;
return err;
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index 1d017ec5c63c..fe3d2258145f 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -91,7 +91,8 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg,
if (len > limit)
len = limit;
- len = af_alg_make_sg(&ctx->sgl, &msg->msg_iter, len);
+ len = af_alg_make_sg(&ctx->sgl, &msg->msg_iter, len,
+ FOLL_SOURCE_BUF);
if (len < 0) {
err = copied ? 0 : len;
goto unlock;
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index dca6346d75b3..5d10837d19ec 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -646,10 +646,13 @@ vhost_scsi_map_to_sgl(struct vhost_scsi_cmd *cmd,
struct scatterlist *sg = sgl;
ssize_t bytes;
size_t offset;
- unsigned int npages = 0;
+ unsigned int npages = 0, gup_flags = 0;
- bytes = iov_iter_get_pages2(iter, pages, LONG_MAX,
- VHOST_SCSI_PREALLOC_UPAGES, &offset);
+ gup_flags |= write ? FOLL_SOURCE_BUF : FOLL_DEST_BUF;
+
+ bytes = iov_iter_get_pages(iter, pages, LONG_MAX,
+ VHOST_SCSI_PREALLOC_UPAGES, &offset,
+ gup_flags);
/* No pages were pinned */
if (bytes <= 0)
return bytes < 0 ? bytes : -EFAULT;
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 8c74871e37c9..cfc3353e5604 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -328,7 +328,7 @@ static void ceph_netfs_issue_read(struct netfs_io_subrequest *subreq)
dout("%s: pos=%llu orig_len=%zu len=%llu\n", __func__, subreq->start, subreq->len, len);
iov_iter_xarray(&iter, ITER_DEST, &rreq->mapping->i_pages, subreq->start, len);
- err = iov_iter_get_pages_alloc2(&iter, &pages, len, &page_off);
+ err = iov_iter_get_pages_alloc(&iter, &pages, len, &page_off, FOLL_DEST_BUF);
if (err < 0) {
dout("%s: iov_ter_get_pages_alloc returned %d\n", __func__, err);
goto out;
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 27c72a2f6af5..ffd36eeea186 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -81,7 +81,7 @@ static __le32 ceph_flags_sys2wire(u32 flags)
#define ITER_GET_BVECS_PAGES 64
static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
- struct bio_vec *bvecs)
+ struct bio_vec *bvecs, bool write)
{
size_t size = 0;
int bvec_idx = 0;
@@ -95,8 +95,9 @@ static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
size_t start;
int idx = 0;
- bytes = iov_iter_get_pages2(iter, pages, maxsize - size,
- ITER_GET_BVECS_PAGES, &start);
+ bytes = iov_iter_get_pages(iter, pages, maxsize - size,
+ ITER_GET_BVECS_PAGES, &start,
+ write ? FOLL_SOURCE_BUF : FOLL_DEST_BUF);
if (bytes < 0)
return size ?: bytes;
@@ -127,7 +128,8 @@ static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
* Return the number of bytes in the created bio_vec array, or an error.
*/
static ssize_t iter_get_bvecs_alloc(struct iov_iter *iter, size_t maxsize,
- struct bio_vec **bvecs, int *num_bvecs)
+ struct bio_vec **bvecs, int *num_bvecs,
+ bool write)
{
struct bio_vec *bv;
size_t orig_count = iov_iter_count(iter);
@@ -146,7 +148,7 @@ static ssize_t iter_get_bvecs_alloc(struct iov_iter *iter, size_t maxsize,
if (!bv)
return -ENOMEM;
- bytes = __iter_get_bvecs(iter, maxsize, bv);
+ bytes = __iter_get_bvecs(iter, maxsize, bv, write);
if (bytes < 0) {
/*
* No pages were pinned -- just free the array.
@@ -1334,7 +1336,7 @@ ceph_direct_read_write(struct kiocb *iocb, struct iov_iter *iter,
break;
}
- len = iter_get_bvecs_alloc(iter, size, &bvecs, &num_pages);
+ len = iter_get_bvecs_alloc(iter, size, &bvecs, &num_pages, write);
if (len < 0) {
ceph_osdc_put_request(req);
ret = len;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 22dfc1f8b4f1..d100b9cb8682 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -3290,8 +3290,8 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
if (ctx->direct_io) {
ssize_t result;
- result = iov_iter_get_pages_alloc2(
- from, &pagevec, cur_len, &start);
+ result = iov_iter_get_pages_alloc(
+ from, &pagevec, cur_len, &start, FOLL_SOURCE_BUF);
if (result < 0) {
cifs_dbg(VFS,
"direct_writev couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
@@ -4031,9 +4031,9 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file,
if (ctx->direct_io) {
ssize_t result;
- result = iov_iter_get_pages_alloc2(
+ result = iov_iter_get_pages_alloc(
&direct_iov, &pagevec,
- cur_len, &start);
+ cur_len, &start, FOLL_DEST_BUF);
if (result < 0) {
cifs_dbg(VFS,
"Couldn't get user pages (rc=%zd) iter type %d iov_offset %zd count %zd\n",
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 4d3c586785a5..9655cf359ab9 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -1030,7 +1030,8 @@ setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw)
saved_len = count;
while (count && npages < max_pages) {
- rc = iov_iter_get_pages2(iter, pages, count, max_pages, &start);
+ rc = iov_iter_get_pages(iter, pages, count, max_pages, &start,
+ rw == WRITE ? FOLL_SOURCE_BUF : FOLL_DEST_BUF);
if (rc < 0) {
cifs_dbg(VFS, "Couldn't get user pages (rc=%zd)\n", rc);
break;
diff --git a/fs/direct-io.c b/fs/direct-io.c
index cf196f2a211e..b1e26a706e31 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -169,8 +169,10 @@ static inline int dio_refill_pages(struct dio *dio, struct dio_submit *sdio)
const enum req_op dio_op = dio->opf & REQ_OP_MASK;
ssize_t ret;
- ret = iov_iter_get_pages2(sdio->iter, dio->pages, LONG_MAX, DIO_PAGES,
- &sdio->from);
+ ret = iov_iter_get_pages(sdio->iter, dio->pages, LONG_MAX, DIO_PAGES,
+ &sdio->from,
+ op_is_write(dio_op) ?
+ FOLL_SOURCE_BUF : FOLL_DEST_BUF);
if (ret < 0 && sdio->blocks_available && dio_op == REQ_OP_WRITE) {
struct page *page = ZERO_PAGE(0);
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index e8b60ce72c9a..e3d8443e24a6 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -730,7 +730,8 @@ static int fuse_copy_fill(struct fuse_copy_state *cs)
}
} else {
size_t off;
- err = iov_iter_get_pages2(cs->iter, &page, PAGE_SIZE, 1, &off);
+ err = iov_iter_get_pages(cs->iter, &page, PAGE_SIZE, 1, &off,
+ cs->write ? FOLL_SOURCE_BUF : FOLL_DEST_BUF);
if (err < 0)
return err;
BUG_ON(!err);
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index d68b45f8b3ae..68c196437306 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1414,10 +1414,10 @@ static int fuse_get_user_pages(struct fuse_args_pages *ap, struct iov_iter *ii,
while (nbytes < *nbytesp && ap->num_pages < max_pages) {
unsigned npages;
size_t start;
- ret = iov_iter_get_pages2(ii, &ap->pages[ap->num_pages],
- *nbytesp - nbytes,
- max_pages - ap->num_pages,
- &start);
+ ret = iov_iter_get_pages(ii, &ap->pages[ap->num_pages],
+ *nbytesp - nbytes,
+ max_pages - ap->num_pages,
+ &start, write ? FOLL_SOURCE_BUF : FOLL_DEST_BUF);
if (ret < 0)
break;
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index d865945f2a63..42af84685f20 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -332,8 +332,9 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
size_t pgbase;
unsigned npages, i;
- result = iov_iter_get_pages_alloc2(iter, &pagevec,
- rsize, &pgbase);
+ result = iov_iter_get_pages_alloc(iter, &pagevec,
+ rsize, &pgbase,
+ FOLL_DEST_BUF);
if (result < 0)
break;
@@ -791,8 +792,9 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
size_t pgbase;
unsigned npages, i;
- result = iov_iter_get_pages_alloc2(iter, &pagevec,
- wsize, &pgbase);
+ result = iov_iter_get_pages_alloc(iter, &pagevec,
+ wsize, &pgbase,
+ FOLL_SOURCE_BUF);
if (result < 0)
break;
diff --git a/fs/splice.c b/fs/splice.c
index 5969b7a1d353..19c5b5adc548 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1165,7 +1165,8 @@ static int iter_to_pipe(struct iov_iter *from,
size_t start;
int i, n;
- left = iov_iter_get_pages2(from, pages, ~0UL, 16, &start);
+ left = iov_iter_get_pages(from, pages, ~0UL, 16, &start,
+ FOLL_SOURCE_BUF);
if (left <= 0) {
ret = left;
break;
diff --git a/include/crypto/if_alg.h b/include/crypto/if_alg.h
index a5db86670bdf..12058ab6cad9 100644
--- a/include/crypto/if_alg.h
+++ b/include/crypto/if_alg.h
@@ -165,7 +165,8 @@ int af_alg_release(struct socket *sock);
void af_alg_release_parent(struct sock *sk);
int af_alg_accept(struct sock *sk, struct socket *newsock, bool kern);
-int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len);
+int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len,
+ unsigned int gup_flags);
void af_alg_free_sg(struct af_alg_sgl *sgl);
static inline struct alg_sock *alg_sk(struct sock *sk)
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 22078a28d7cb..3f7ba7fe48ac 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -40,11 +40,25 @@ static inline unsigned int bio_max_segs(unsigned int nr_segs)
#define bio_sectors(bio) bvec_iter_sectors((bio)->bi_iter)
#define bio_end_sector(bio) bvec_iter_end_sector((bio)->bi_iter)
+/**
+ * bio_is_write - Query if the I/O direction is towards the disk
+ * @bio: The bio to query
+ *
+ * Return true if this is some sort of write operation - ie. the data is going
+ * towards the disk.
+ */
+static inline bool bio_is_write(const struct bio *bio)
+{
+ return op_is_write(bio_op(bio));
+}
+
/*
* Return the data direction, READ or WRITE.
*/
-#define bio_data_dir(bio) \
- (op_is_write(bio_op(bio)) ? WRITE : READ)
+static inline int bio_data_dir(const struct bio *bio)
+{
+ return bio_is_write(bio) ? WRITE : READ;
+}
/*
* Check whether this bio carries any data or not. A NULL bio is allowed.
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f3f196e4d66d..3af4ca8b1fe7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3090,6 +3090,10 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
#define FOLL_PCI_P2PDMA 0x100000 /* allow returning PCI P2PDMA pages */
#define FOLL_INTERRUPTIBLE 0x200000 /* allow interrupts from generic signals */
+#define FOLL_SOURCE_BUF 0 /* Memory will be read from by I/O */
+#define FOLL_DEST_BUF FOLL_WRITE /* Memory will be written to by I/O */
+#define FOLL_BUF_MASK FOLL_WRITE
+
/*
* FOLL_PIN and FOLL_LONGTERM may be used in various combinations with each
* other. Here is what they mean, and how to use them:
@@ -3143,6 +3147,12 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
* releasing pages: get_user_pages*() pages must be released via put_page(),
* while pin_user_pages*() pages must be released via unpin_user_page().
*
+ * FOLL_SOURCE_BUF and FOLL_DEST_BUF are indicators to get_user_pages*() and
+ * iov_iter_*_pages*() as to how the pages obtained are going to be used.
+ * FOLL_SOURCE_BUF indicates that I/O op is going to transfer from memory to
+ * device; FOLL_DEST_BUF that the op is going to transfer from device to
+ * memory.
+ *
* Please see Documentation/core-api/pin_user_pages.rst for more information.
*/
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index 68497d9c1452..f53583836009 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -1429,11 +1429,6 @@ static struct page *first_bvec_segment(const struct iov_iter *i,
return page;
}
-static unsigned char iov_iter_rw(const struct iov_iter *i)
-{
- return i->data_source ? WRITE : READ;
-}
-
static ssize_t __iov_iter_get_pages_alloc(struct iov_iter *i,
struct page ***pages, size_t maxsize,
unsigned int maxpages, size_t *start,
@@ -1448,12 +1443,17 @@ static ssize_t __iov_iter_get_pages_alloc(struct iov_iter *i,
if (maxsize > MAX_RW_COUNT)
maxsize = MAX_RW_COUNT;
+ if (WARN_ON_ONCE((gup_flags & FOLL_BUF_MASK) == FOLL_SOURCE_BUF &&
+ i->data_source == ITER_DEST))
+ return -EIO;
+ if (WARN_ON_ONCE((gup_flags & FOLL_BUF_MASK) == FOLL_DEST_BUF &&
+ i->data_source == ITER_SOURCE))
+ return -EIO;
+
if (likely(user_backed_iter(i))) {
unsigned long addr;
int res;
- if (iov_iter_rw(i) != WRITE)
- gup_flags |= FOLL_WRITE;
if (i->nofault)
gup_flags |= FOLL_NOFAULT;
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 3c27ffb781e3..eb28b54fe5f6 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -310,7 +310,8 @@ static int p9_get_mapped_pages(struct virtio_chan *chan,
struct iov_iter *data,
int count,
size_t *offs,
- int *need_drop)
+ int *need_drop,
+ unsigned int gup_flags)
{
int nr_pages;
int err;
@@ -330,7 +331,8 @@ static int p9_get_mapped_pages(struct virtio_chan *chan,
if (err == -ERESTARTSYS)
return err;
}
- n = iov_iter_get_pages_alloc2(data, pages, count, offs);
+ n = iov_iter_get_pages_alloc(data, pages, count, offs,
+ gup_flags);
if (n < 0)
return n;
*need_drop = 1;
@@ -437,7 +439,8 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
if (uodata) {
__le32 sz;
int n = p9_get_mapped_pages(chan, &out_pages, uodata,
- outlen, &offs, &need_drop);
+ outlen, &offs, &need_drop,
+ FOLL_DEST_BUF);
if (n < 0) {
err = n;
goto err_out;
@@ -456,7 +459,8 @@ p9_virtio_zc_request(struct p9_client *client, struct p9_req_t *req,
memcpy(&req->tc.sdata[0], &sz, sizeof(sz));
} else if (uidata) {
int n = p9_get_mapped_pages(chan, &in_pages, uidata,
- inlen, &offs, &need_drop);
+ inlen, &offs, &need_drop,
+ FOLL_SOURCE_BUF);
if (n < 0) {
err = n;
goto err_out;
diff --git a/net/core/datagram.c b/net/core/datagram.c
index e4ff2db40c98..9f0914b781ad 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -632,8 +632,9 @@ int __zerocopy_sg_from_iter(struct msghdr *msg, struct sock *sk,
if (frag == MAX_SKB_FRAGS)
return -EMSGSIZE;
- copied = iov_iter_get_pages2(from, pages, length,
- MAX_SKB_FRAGS - frag, &start);
+ copied = iov_iter_get_pages(from, pages, length,
+ MAX_SKB_FRAGS - frag, &start,
+ FOLL_SOURCE_BUF);
if (copied < 0)
return -EFAULT;
diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index 53d0251788aa..f63a13690712 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -324,8 +324,8 @@ int sk_msg_zerocopy_from_iter(struct sock *sk, struct iov_iter *from,
goto out;
}
- copied = iov_iter_get_pages2(from, pages, bytes, maxpages,
- &offset);
+ copied = iov_iter_get_pages(from, pages, bytes, maxpages,
+ &offset, FOLL_SOURCE_BUF);
if (copied <= 0) {
ret = -EFAULT;
goto out;
diff --git a/net/rds/message.c b/net/rds/message.c
index b47e4f0a1639..fcfd406b97af 100644
--- a/net/rds/message.c
+++ b/net/rds/message.c
@@ -390,8 +390,8 @@ static int rds_message_zcopy_from_user(struct rds_message *rm, struct iov_iter *
size_t start;
ssize_t copied;
- copied = iov_iter_get_pages2(from, &pages, PAGE_SIZE,
- 1, &start);
+ copied = iov_iter_get_pages(from, &pages, PAGE_SIZE,
+ 1, &start, FOLL_SOURCE_BUF);
if (copied < 0) {
struct mmpin *mmp;
int i;
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 9ed978634125..59acaeb24f54 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1354,9 +1354,8 @@ static int tls_setup_from_iter(struct iov_iter *from,
rc = -EFAULT;
goto out;
}
- copied = iov_iter_get_pages2(from, pages,
- length,
- maxpages, &offset);
+ copied = iov_iter_get_pages(from, pages, length,
+ maxpages, &offset, FOLL_DEST_BUF);
if (copied <= 0) {
rc = -EFAULT;
goto out;
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