diff mbox series

[RFC,v11,04/14] mm: page_frag: add '_va' suffix to page_frag API

Message ID 20240719093338.55117-5-linyunsheng@huawei.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series Replace page_frag with page_frag_cache for sk_page_frag() | expand

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Commit Message

Yunsheng Lin July 19, 2024, 9:33 a.m. UTC 
Currently the page_frag API is returning 'virtual address'
or 'va' when allocing and expecting 'virtual address' or
'va' as input when freeing.

As we are about to support new use cases that the caller
need to deal with 'struct page' or need to deal with both
'va' and 'struct page'. In order to differentiate the API
handling between 'va' and 'struct page', add '_va' suffix
to the corresponding API mirroring the page_pool_alloc_va()
API of the page_pool. So that callers expecting to deal with
va, page or both va and page may call page_frag_alloc_va*,
page_frag_alloc_pg*, or page_frag_alloc* API accordingly.

CC: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Subbaraya Sundeep <sbhatta@marvell.com>
---
 drivers/net/ethernet/google/gve/gve_rx.c      |  4 ++--
 drivers/net/ethernet/intel/ice/ice_txrx.c     |  2 +-
 drivers/net/ethernet/intel/ice/ice_txrx.h     |  2 +-
 drivers/net/ethernet/intel/ice/ice_txrx_lib.c |  2 +-
 .../net/ethernet/intel/ixgbevf/ixgbevf_main.c |  4 ++--
 .../marvell/octeontx2/nic/otx2_common.c       |  2 +-
 drivers/net/ethernet/mediatek/mtk_wed_wo.c    |  4 ++--
 drivers/nvme/host/tcp.c                       |  8 +++----
 drivers/nvme/target/tcp.c                     | 22 +++++++++----------
 drivers/vhost/net.c                           |  6 ++---
 include/linux/page_frag_cache.h               | 21 +++++++++---------
 include/linux/skbuff.h                        |  2 +-
 kernel/bpf/cpumap.c                           |  2 +-
 mm/page_frag_cache.c                          | 12 +++++-----
 mm/page_frag_test.c                           | 13 ++++++-----
 net/core/skbuff.c                             | 14 ++++++------
 net/core/xdp.c                                |  2 +-
 net/rxrpc/txbuf.c                             | 15 +++++++------
 net/sunrpc/svcsock.c                          |  6 ++---
 19 files changed, 74 insertions(+), 69 deletions(-)

Comments

Alexander Duyck July 21, 2024, 8:41 p.m. UTC | #1 
On Fri, Jul 19, 2024 at 2:37 AM Yunsheng Lin <linyunsheng@huawei.com> wrote:
>
> Currently the page_frag API is returning 'virtual address'
> or 'va' when allocing and expecting 'virtual address' or
> 'va' as input when freeing.
>
> As we are about to support new use cases that the caller
> need to deal with 'struct page' or need to deal with both
> 'va' and 'struct page'. In order to differentiate the API
> handling between 'va' and 'struct page', add '_va' suffix
> to the corresponding API mirroring the page_pool_alloc_va()
> API of the page_pool. So that callers expecting to deal with
> va, page or both va and page may call page_frag_alloc_va*,
> page_frag_alloc_pg*, or page_frag_alloc* API accordingly.
>
> CC: Alexander Duyck <alexander.duyck@gmail.com>
> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
> Reviewed-by: Subbaraya Sundeep <sbhatta@marvell.com>

Rather than renaming the existing API I would rather see this follow
the same approach as we use with the other memory subsystem functions.
A specific example being that with free_page it is essentially passed
a virtual address, while the double underscore version is passed a
page. I would be more okay with us renaming the double underscore
version of any functions we might have to address that rather than
renaming all the functions with "va".

In general I would say this patch is adding no value as what it is
doing is essentially pushing the primary users of this API to change
to support use cases that won't impact most of them. It is just
creating a ton of noise in terms of changes with no added value so we
can reuse the function names.
Yunsheng Lin July 25, 2024, 12:21 p.m. UTC | #2 
On 2024/7/22 4:41, Alexander Duyck wrote:
> On Fri, Jul 19, 2024 at 2:37 AM Yunsheng Lin <linyunsheng@huawei.com> wrote:
>>
>> Currently the page_frag API is returning 'virtual address'
>> or 'va' when allocing and expecting 'virtual address' or
>> 'va' as input when freeing.
>>
>> As we are about to support new use cases that the caller
>> need to deal with 'struct page' or need to deal with both
>> 'va' and 'struct page'. In order to differentiate the API
>> handling between 'va' and 'struct page', add '_va' suffix
>> to the corresponding API mirroring the page_pool_alloc_va()
>> API of the page_pool. So that callers expecting to deal with
>> va, page or both va and page may call page_frag_alloc_va*,
>> page_frag_alloc_pg*, or page_frag_alloc* API accordingly.
>>
>> CC: Alexander Duyck <alexander.duyck@gmail.com>
>> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
>> Reviewed-by: Subbaraya Sundeep <sbhatta@marvell.com>
> 
> Rather than renaming the existing API I would rather see this follow
> the same approach as we use with the other memory subsystem functions.

I am not sure if I understand what 'the other memory subsystem functions'
is referring to, it would be better to be more specific about that.

For allocation side:
alloc_pages*()
extern unsigned long get_free_page*(gfp_t gfp_mask, unsigned int order);

For free side, it seems we have:
extern void __free_pages(struct page *page, unsigned int order);
extern void free_pages(unsigned long addr, unsigned int order);
static inline void put_page(struct page *page)

So there seems to be no clear pattern that the mm APIs with double
underscore is dealing with 'struct page' and the one without double
underscore is dealing with virtual address, at least not from the
allocation side.

> A specific example being that with free_page it is essentially passed
> a virtual address, while the double underscore version is passed a
> page. I would be more okay with us renaming the double underscore
> version of any functions we might have to address that rather than
> renaming all the functions with "va".

Before this patchset, page_frag has the below APIs as below:

void *__page_frag_alloc_align(struct page_frag_cache *nc, unsigned int fragsz,
			      gfp_t gfp_mask, unsigned int align_mask);

static inline void *page_frag_alloc_align(struct page_frag_cache *nc,
					  unsigned int fragsz, gfp_t gfp_mask,
					  unsigned int align)

extern void page_frag_free(void *addr);

It would be better to be more specific about what renaming does the above
APIs need in order to support the new usecases.

> 
> In general I would say this patch is adding no value as what it is

As above, it would be better to give a more specific suggestion to
back up the above somewhat abstract agrument, otherwise it is hard
to tell if there is better option here, and why it is better than
the one proposed in this patchset.

> doing is essentially pushing the primary users of this API to change
> to support use cases that won't impact most of them. It is just
> creating a ton of noise in terms of changes with no added value so we
> can reuse the function names.


After this patchset, we have the below page_frag APIs:

For allocation side, we have below APIs:
struct page *page_frag_alloc_pg*(struct page_frag_cache *nc,
                                unsigned int *offset, unsigned int fragsz,
                                gfp_t gfp);
void *page_frag_alloc_va*(struct page_frag_cache *nc,
                                 unsigned int fragsz, gfp_t gfp_mask,
                                 unsigned int align_mask);
struct page *page_frag_alloc*(struct page_frag_cache *nc,
                                     unsigned int *offset,
                                     unsigned int fragsz,
                                     void **va, gfp_t gfp);

For allocation side, we have below APIs:
void page_frag_free_va(void *addr);

The main rules for the about naming are:
1. The API with 'align' suffix ensure the offset or va is aligned
2. The API with double underscore has no checking for the algin parameter.
3. The API with 'va' suffix is dealing with virtual address.
4. The API with 'pg' suffix is dealing with 'struct page'.
5. The API without 'pg' and 'va' suffix is dealing with both 'struct page'
   and virtual address.

Yes, I suppose it is not perfect mainly because we reuse some existing mm
API for page_frag free API.

As mentioned before, I would be happy to change it if what you are proposing
is indeed the better option.
diff mbox series

Patch

diff --git a/drivers/net/ethernet/google/gve/gve_rx.c b/drivers/net/ethernet/google/gve/gve_rx.c
index acb73d4d0de6..b6c10100e462 100644
--- a/drivers/net/ethernet/google/gve/gve_rx.c
+++ b/drivers/net/ethernet/google/gve/gve_rx.c
@@ -729,7 +729,7 @@  static int gve_xdp_redirect(struct net_device *dev, struct gve_rx_ring *rx,
 
 	total_len = headroom + SKB_DATA_ALIGN(len) +
 		SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
-	frame = page_frag_alloc(&rx->page_cache, total_len, GFP_ATOMIC);
+	frame = page_frag_alloc_va(&rx->page_cache, total_len, GFP_ATOMIC);
 	if (!frame) {
 		u64_stats_update_begin(&rx->statss);
 		rx->xdp_alloc_fails++;
@@ -742,7 +742,7 @@  static int gve_xdp_redirect(struct net_device *dev, struct gve_rx_ring *rx,
 
 	err = xdp_do_redirect(dev, &new, xdp_prog);
 	if (err)
-		page_frag_free(frame);
+		page_frag_free_va(frame);
 
 	return err;
 }
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index 8bb743f78fcb..399b317c509d 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -126,7 +126,7 @@  ice_unmap_and_free_tx_buf(struct ice_tx_ring *ring, struct ice_tx_buf *tx_buf)
 		dev_kfree_skb_any(tx_buf->skb);
 		break;
 	case ICE_TX_BUF_XDP_TX:
-		page_frag_free(tx_buf->raw_buf);
+		page_frag_free_va(tx_buf->raw_buf);
 		break;
 	case ICE_TX_BUF_XDP_XMIT:
 		xdp_return_frame(tx_buf->xdpf);
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.h b/drivers/net/ethernet/intel/ice/ice_txrx.h
index feba314a3fe4..6379f57d8228 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.h
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.h
@@ -148,7 +148,7 @@  static inline int ice_skb_pad(void)
  * @ICE_TX_BUF_DUMMY: dummy Flow Director packet, unmap and kfree()
  * @ICE_TX_BUF_FRAG: mapped skb OR &xdp_buff frag, only unmap DMA
  * @ICE_TX_BUF_SKB: &sk_buff, unmap and consume_skb(), update stats
- * @ICE_TX_BUF_XDP_TX: &xdp_buff, unmap and page_frag_free(), stats
+ * @ICE_TX_BUF_XDP_TX: &xdp_buff, unmap and page_frag_free_va(), stats
  * @ICE_TX_BUF_XDP_XMIT: &xdp_frame, unmap and xdp_return_frame(), stats
  * @ICE_TX_BUF_XSK_TX: &xdp_buff on XSk queue, xsk_buff_free(), stats
  */
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
index 2719f0e20933..a1a41a14df0d 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx_lib.c
@@ -250,7 +250,7 @@  ice_clean_xdp_tx_buf(struct device *dev, struct ice_tx_buf *tx_buf,
 
 	switch (tx_buf->type) {
 	case ICE_TX_BUF_XDP_TX:
-		page_frag_free(tx_buf->raw_buf);
+		page_frag_free_va(tx_buf->raw_buf);
 		break;
 	case ICE_TX_BUF_XDP_XMIT:
 		xdp_return_frame_bulk(tx_buf->xdpf, bq);
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 149911e3002a..eef16a909f85 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -302,7 +302,7 @@  static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
 
 		/* free the skb */
 		if (ring_is_xdp(tx_ring))
-			page_frag_free(tx_buffer->data);
+			page_frag_free_va(tx_buffer->data);
 		else
 			napi_consume_skb(tx_buffer->skb, napi_budget);
 
@@ -2412,7 +2412,7 @@  static void ixgbevf_clean_tx_ring(struct ixgbevf_ring *tx_ring)
 
 		/* Free all the Tx ring sk_buffs */
 		if (ring_is_xdp(tx_ring))
-			page_frag_free(tx_buffer->data);
+			page_frag_free_va(tx_buffer->data);
 		else
 			dev_kfree_skb_any(tx_buffer->skb);
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index 87d5776e3b88..a485e988fa1d 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -553,7 +553,7 @@  static int __otx2_alloc_rbuf(struct otx2_nic *pfvf, struct otx2_pool *pool,
 	*dma = dma_map_single_attrs(pfvf->dev, buf, pool->rbsize,
 				    DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
 	if (unlikely(dma_mapping_error(pfvf->dev, *dma))) {
-		page_frag_free(buf);
+		page_frag_free_va(buf);
 		return -ENOMEM;
 	}
 
diff --git a/drivers/net/ethernet/mediatek/mtk_wed_wo.c b/drivers/net/ethernet/mediatek/mtk_wed_wo.c
index 7063c78bd35f..c4228719f8a4 100644
--- a/drivers/net/ethernet/mediatek/mtk_wed_wo.c
+++ b/drivers/net/ethernet/mediatek/mtk_wed_wo.c
@@ -142,8 +142,8 @@  mtk_wed_wo_queue_refill(struct mtk_wed_wo *wo, struct mtk_wed_wo_queue *q,
 		dma_addr_t addr;
 		void *buf;
 
-		buf = page_frag_alloc(&q->cache, q->buf_size,
-				      GFP_ATOMIC | GFP_DMA32);
+		buf = page_frag_alloc_va(&q->cache, q->buf_size,
+					 GFP_ATOMIC | GFP_DMA32);
 		if (!buf)
 			break;
 
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index a2a47d3ab99f..86906bc505de 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -506,7 +506,7 @@  static void nvme_tcp_exit_request(struct blk_mq_tag_set *set,
 {
 	struct nvme_tcp_request *req = blk_mq_rq_to_pdu(rq);
 
-	page_frag_free(req->pdu);
+	page_frag_free_va(req->pdu);
 }
 
 static int nvme_tcp_init_request(struct blk_mq_tag_set *set,
@@ -520,7 +520,7 @@  static int nvme_tcp_init_request(struct blk_mq_tag_set *set,
 	struct nvme_tcp_queue *queue = &ctrl->queues[queue_idx];
 	u8 hdgst = nvme_tcp_hdgst_len(queue);
 
-	req->pdu = page_frag_alloc(&queue->pf_cache,
+	req->pdu = page_frag_alloc_va(&queue->pf_cache,
 		sizeof(struct nvme_tcp_cmd_pdu) + hdgst,
 		GFP_KERNEL | __GFP_ZERO);
 	if (!req->pdu)
@@ -1337,7 +1337,7 @@  static void nvme_tcp_free_async_req(struct nvme_tcp_ctrl *ctrl)
 {
 	struct nvme_tcp_request *async = &ctrl->async_req;
 
-	page_frag_free(async->pdu);
+	page_frag_free_va(async->pdu);
 }
 
 static int nvme_tcp_alloc_async_req(struct nvme_tcp_ctrl *ctrl)
@@ -1346,7 +1346,7 @@  static int nvme_tcp_alloc_async_req(struct nvme_tcp_ctrl *ctrl)
 	struct nvme_tcp_request *async = &ctrl->async_req;
 	u8 hdgst = nvme_tcp_hdgst_len(queue);
 
-	async->pdu = page_frag_alloc(&queue->pf_cache,
+	async->pdu = page_frag_alloc_va(&queue->pf_cache,
 		sizeof(struct nvme_tcp_cmd_pdu) + hdgst,
 		GFP_KERNEL | __GFP_ZERO);
 	if (!async->pdu)
diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index 5bff0d5464d1..560df3db2f82 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -1463,24 +1463,24 @@  static int nvmet_tcp_alloc_cmd(struct nvmet_tcp_queue *queue,
 	c->queue = queue;
 	c->req.port = queue->port->nport;
 
-	c->cmd_pdu = page_frag_alloc(&queue->pf_cache,
+	c->cmd_pdu = page_frag_alloc_va(&queue->pf_cache,
 			sizeof(*c->cmd_pdu) + hdgst, GFP_KERNEL | __GFP_ZERO);
 	if (!c->cmd_pdu)
 		return -ENOMEM;
 	c->req.cmd = &c->cmd_pdu->cmd;
 
-	c->rsp_pdu = page_frag_alloc(&queue->pf_cache,
+	c->rsp_pdu = page_frag_alloc_va(&queue->pf_cache,
 			sizeof(*c->rsp_pdu) + hdgst, GFP_KERNEL | __GFP_ZERO);
 	if (!c->rsp_pdu)
 		goto out_free_cmd;
 	c->req.cqe = &c->rsp_pdu->cqe;
 
-	c->data_pdu = page_frag_alloc(&queue->pf_cache,
+	c->data_pdu = page_frag_alloc_va(&queue->pf_cache,
 			sizeof(*c->data_pdu) + hdgst, GFP_KERNEL | __GFP_ZERO);
 	if (!c->data_pdu)
 		goto out_free_rsp;
 
-	c->r2t_pdu = page_frag_alloc(&queue->pf_cache,
+	c->r2t_pdu = page_frag_alloc_va(&queue->pf_cache,
 			sizeof(*c->r2t_pdu) + hdgst, GFP_KERNEL | __GFP_ZERO);
 	if (!c->r2t_pdu)
 		goto out_free_data;
@@ -1495,20 +1495,20 @@  static int nvmet_tcp_alloc_cmd(struct nvmet_tcp_queue *queue,
 
 	return 0;
 out_free_data:
-	page_frag_free(c->data_pdu);
+	page_frag_free_va(c->data_pdu);
 out_free_rsp:
-	page_frag_free(c->rsp_pdu);
+	page_frag_free_va(c->rsp_pdu);
 out_free_cmd:
-	page_frag_free(c->cmd_pdu);
+	page_frag_free_va(c->cmd_pdu);
 	return -ENOMEM;
 }
 
 static void nvmet_tcp_free_cmd(struct nvmet_tcp_cmd *c)
 {
-	page_frag_free(c->r2t_pdu);
-	page_frag_free(c->data_pdu);
-	page_frag_free(c->rsp_pdu);
-	page_frag_free(c->cmd_pdu);
+	page_frag_free_va(c->r2t_pdu);
+	page_frag_free_va(c->data_pdu);
+	page_frag_free_va(c->rsp_pdu);
+	page_frag_free_va(c->cmd_pdu);
 }
 
 static int nvmet_tcp_alloc_cmds(struct nvmet_tcp_queue *queue)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index f16279351db5..6691fac01e0d 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -686,8 +686,8 @@  static int vhost_net_build_xdp(struct vhost_net_virtqueue *nvq,
 		return -ENOSPC;
 
 	buflen += SKB_DATA_ALIGN(len + pad);
-	buf = page_frag_alloc_align(&net->pf_cache, buflen, GFP_KERNEL,
-				    SMP_CACHE_BYTES);
+	buf = page_frag_alloc_va_align(&net->pf_cache, buflen, GFP_KERNEL,
+				       SMP_CACHE_BYTES);
 	if (unlikely(!buf))
 		return -ENOMEM;
 
@@ -734,7 +734,7 @@  static int vhost_net_build_xdp(struct vhost_net_virtqueue *nvq,
 	return 0;
 
 err:
-	page_frag_free(buf);
+	page_frag_free_va(buf);
 	return ret;
 }
 
diff --git a/include/linux/page_frag_cache.h b/include/linux/page_frag_cache.h
index 43afb1bbcac9..4c5079f232b5 100644
--- a/include/linux/page_frag_cache.h
+++ b/include/linux/page_frag_cache.h
@@ -10,23 +10,24 @@ 
 
 void page_frag_cache_drain(struct page_frag_cache *nc);
 void __page_frag_cache_drain(struct page *page, unsigned int count);
-void *__page_frag_alloc_align(struct page_frag_cache *nc, unsigned int fragsz,
-			      gfp_t gfp_mask, unsigned int align_mask);
+void *__page_frag_alloc_va_align(struct page_frag_cache *nc,
+				 unsigned int fragsz, gfp_t gfp_mask,
+				 unsigned int align_mask);
 
-static inline void *page_frag_alloc_align(struct page_frag_cache *nc,
-					  unsigned int fragsz, gfp_t gfp_mask,
-					  unsigned int align)
+static inline void *page_frag_alloc_va_align(struct page_frag_cache *nc,
+					     unsigned int fragsz,
+					     gfp_t gfp_mask, unsigned int align)
 {
 	WARN_ON_ONCE(!is_power_of_2(align));
-	return __page_frag_alloc_align(nc, fragsz, gfp_mask, -align);
+	return __page_frag_alloc_va_align(nc, fragsz, gfp_mask, -align);
 }
 
-static inline void *page_frag_alloc(struct page_frag_cache *nc,
-				    unsigned int fragsz, gfp_t gfp_mask)
+static inline void *page_frag_alloc_va(struct page_frag_cache *nc,
+				       unsigned int fragsz, gfp_t gfp_mask)
 {
-	return __page_frag_alloc_align(nc, fragsz, gfp_mask, ~0u);
+	return __page_frag_alloc_va_align(nc, fragsz, gfp_mask, ~0u);
 }
 
-void page_frag_free(void *addr);
+void page_frag_free_va(void *addr);
 
 #endif
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e0e2be5194fb..fb74725d1af8 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3381,7 +3381,7 @@  static inline struct sk_buff *netdev_alloc_skb_ip_align(struct net_device *dev,
 
 static inline void skb_free_frag(void *addr)
 {
-	page_frag_free(addr);
+	page_frag_free_va(addr);
 }
 
 void *__napi_alloc_frag_align(unsigned int fragsz, unsigned int align_mask);
diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
index fbdf5a1aabfe..3b70b6b071b9 100644
--- a/kernel/bpf/cpumap.c
+++ b/kernel/bpf/cpumap.c
@@ -323,7 +323,7 @@  static int cpu_map_kthread_run(void *data)
 
 			/* Bring struct page memory area to curr CPU. Read by
 			 * build_skb_around via page_is_pfmemalloc(), and when
-			 * freed written by page_frag_free call.
+			 * freed written by page_frag_free_va call.
 			 */
 			prefetchw(page);
 		}
diff --git a/mm/page_frag_cache.c b/mm/page_frag_cache.c
index 2958fe006fe7..b12496f05c4a 100644
--- a/mm/page_frag_cache.c
+++ b/mm/page_frag_cache.c
@@ -69,9 +69,9 @@  void __page_frag_cache_drain(struct page *page, unsigned int count)
 }
 EXPORT_SYMBOL(__page_frag_cache_drain);
 
-void *__page_frag_alloc_align(struct page_frag_cache *nc,
-			      unsigned int fragsz, gfp_t gfp_mask,
-			      unsigned int align_mask)
+void *__page_frag_alloc_va_align(struct page_frag_cache *nc,
+				 unsigned int fragsz, gfp_t gfp_mask,
+				 unsigned int align_mask)
 {
 	unsigned int size = PAGE_SIZE;
 	unsigned int remaining;
@@ -143,16 +143,16 @@  void *__page_frag_alloc_align(struct page_frag_cache *nc,
 
 	return nc->va + (size - remaining);
 }
-EXPORT_SYMBOL(__page_frag_alloc_align);
+EXPORT_SYMBOL(__page_frag_alloc_va_align);
 
 /*
  * Frees a page fragment allocated out of either a compound or order 0 page.
  */
-void page_frag_free(void *addr)
+void page_frag_free_va(void *addr)
 {
 	struct page *page = virt_to_head_page(addr);
 
 	if (unlikely(put_page_testzero(page)))
 		free_unref_page(page, compound_order(page));
 }
-EXPORT_SYMBOL(page_frag_free);
+EXPORT_SYMBOL(page_frag_free_va);
diff --git a/mm/page_frag_test.c b/mm/page_frag_test.c
index b7a5affb92f2..9eaa3ab74b29 100644
--- a/mm/page_frag_test.c
+++ b/mm/page_frag_test.c
@@ -276,7 +276,7 @@  static int page_frag_pop_thread(void *arg)
 
 		if (obj) {
 			nr--;
-			page_frag_free(obj);
+			page_frag_free_va(obj);
 		} else {
 			cond_resched();
 		}
@@ -304,13 +304,16 @@  static int page_frag_push_thread(void *arg)
 		int ret;
 
 		if (test_align) {
-			va = page_frag_alloc_align(&test_frag, test_alloc_len,
-						   GFP_KERNEL, SMP_CACHE_BYTES);
+			va = page_frag_alloc_va_align(&test_frag,
+						      test_alloc_len,
+						      GFP_KERNEL,
+						      SMP_CACHE_BYTES);
 
 			WARN_ONCE((unsigned long)va & (SMP_CACHE_BYTES - 1),
 				  "unaligned va returned\n");
 		} else {
-			va = page_frag_alloc(&test_frag, test_alloc_len, GFP_KERNEL);
+			va = page_frag_alloc_va(&test_frag, test_alloc_len,
+						GFP_KERNEL);
 		}
 
 		if (!va)
@@ -318,7 +321,7 @@  static int page_frag_push_thread(void *arg)
 
 		ret = objpool_push(va, pool);
 		if (ret) {
-			page_frag_free(va);
+			page_frag_free_va(va);
 			cond_resched();
 		} else {
 			nr--;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 83f8cd8aa2d1..4b8acd967793 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -314,8 +314,8 @@  void *__napi_alloc_frag_align(unsigned int fragsz, unsigned int align_mask)
 	fragsz = SKB_DATA_ALIGN(fragsz);
 
 	local_lock_nested_bh(&napi_alloc_cache.bh_lock);
-	data = __page_frag_alloc_align(&nc->page, fragsz, GFP_ATOMIC,
-				       align_mask);
+	data = __page_frag_alloc_va_align(&nc->page, fragsz, GFP_ATOMIC,
+					  align_mask);
 	local_unlock_nested_bh(&napi_alloc_cache.bh_lock);
 	return data;
 
@@ -330,8 +330,8 @@  void *__netdev_alloc_frag_align(unsigned int fragsz, unsigned int align_mask)
 		struct page_frag_cache *nc = this_cpu_ptr(&netdev_alloc_cache);
 
 		fragsz = SKB_DATA_ALIGN(fragsz);
-		data = __page_frag_alloc_align(nc, fragsz, GFP_ATOMIC,
-					       align_mask);
+		data = __page_frag_alloc_va_align(nc, fragsz, GFP_ATOMIC,
+						  align_mask);
 	} else {
 		local_bh_disable();
 		data = __napi_alloc_frag_align(fragsz, align_mask);
@@ -748,14 +748,14 @@  struct sk_buff *__netdev_alloc_skb(struct net_device *dev, unsigned int len,
 
 	if (in_hardirq() || irqs_disabled()) {
 		nc = this_cpu_ptr(&netdev_alloc_cache);
-		data = page_frag_alloc(nc, len, gfp_mask);
+		data = page_frag_alloc_va(nc, len, gfp_mask);
 		pfmemalloc = nc->pfmemalloc;
 	} else {
 		local_bh_disable();
 		local_lock_nested_bh(&napi_alloc_cache.bh_lock);
 
 		nc = this_cpu_ptr(&napi_alloc_cache.page);
-		data = page_frag_alloc(nc, len, gfp_mask);
+		data = page_frag_alloc_va(nc, len, gfp_mask);
 		pfmemalloc = nc->pfmemalloc;
 
 		local_unlock_nested_bh(&napi_alloc_cache.bh_lock);
@@ -845,7 +845,7 @@  struct sk_buff *napi_alloc_skb(struct napi_struct *napi, unsigned int len)
 	} else {
 		len = SKB_HEAD_ALIGN(len);
 
-		data = page_frag_alloc(&nc->page, len, gfp_mask);
+		data = page_frag_alloc_va(&nc->page, len, gfp_mask);
 		pfmemalloc = nc->page.pfmemalloc;
 	}
 	local_unlock_nested_bh(&napi_alloc_cache.bh_lock);
diff --git a/net/core/xdp.c b/net/core/xdp.c
index bcc5551c6424..7d4e09fb478f 100644
--- a/net/core/xdp.c
+++ b/net/core/xdp.c
@@ -387,7 +387,7 @@  void __xdp_return(void *data, struct xdp_mem_info *mem, bool napi_direct,
 		page_pool_put_full_page(page->pp, page, napi_direct);
 		break;
 	case MEM_TYPE_PAGE_SHARED:
-		page_frag_free(data);
+		page_frag_free_va(data);
 		break;
 	case MEM_TYPE_PAGE_ORDER0:
 		page = virt_to_page(data); /* Assumes order0 page*/
diff --git a/net/rxrpc/txbuf.c b/net/rxrpc/txbuf.c
index c3913d8a50d3..dccb0353ee84 100644
--- a/net/rxrpc/txbuf.c
+++ b/net/rxrpc/txbuf.c
@@ -33,8 +33,8 @@  struct rxrpc_txbuf *rxrpc_alloc_data_txbuf(struct rxrpc_call *call, size_t data_
 
 	data_align = umax(data_align, L1_CACHE_BYTES);
 	mutex_lock(&call->conn->tx_data_alloc_lock);
-	buf = page_frag_alloc_align(&call->conn->tx_data_alloc, total, gfp,
-				    data_align);
+	buf = page_frag_alloc_va_align(&call->conn->tx_data_alloc, total, gfp,
+				       data_align);
 	mutex_unlock(&call->conn->tx_data_alloc_lock);
 	if (!buf) {
 		kfree(txb);
@@ -96,17 +96,18 @@  struct rxrpc_txbuf *rxrpc_alloc_ack_txbuf(struct rxrpc_call *call, size_t sack_s
 	if (!txb)
 		return NULL;
 
-	buf = page_frag_alloc(&call->local->tx_alloc,
-			      sizeof(*whdr) + sizeof(*ack) + 1 + 3 + sizeof(*trailer), gfp);
+	buf = page_frag_alloc_va(&call->local->tx_alloc,
+				 sizeof(*whdr) + sizeof(*ack) + 1 + 3 + sizeof(*trailer), gfp);
 	if (!buf) {
 		kfree(txb);
 		return NULL;
 	}
 
 	if (sack_size) {
-		buf2 = page_frag_alloc(&call->local->tx_alloc, sack_size, gfp);
+		buf2 = page_frag_alloc_va(&call->local->tx_alloc, sack_size,
+					  gfp);
 		if (!buf2) {
-			page_frag_free(buf);
+			page_frag_free_va(buf);
 			kfree(txb);
 			return NULL;
 		}
@@ -180,7 +181,7 @@  static void rxrpc_free_txbuf(struct rxrpc_txbuf *txb)
 			  rxrpc_txbuf_free);
 	for (i = 0; i < txb->nr_kvec; i++)
 		if (txb->kvec[i].iov_base)
-			page_frag_free(txb->kvec[i].iov_base);
+			page_frag_free_va(txb->kvec[i].iov_base);
 	kfree(txb);
 	atomic_dec(&rxrpc_nr_txbuf);
 }
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 6b3f01beb294..42d20412c1c3 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1222,8 +1222,8 @@  static int svc_tcp_sendmsg(struct svc_sock *svsk, struct svc_rqst *rqstp,
 	/* The stream record marker is copied into a temporary page
 	 * fragment buffer so that it can be included in rq_bvec.
 	 */
-	buf = page_frag_alloc(&svsk->sk_frag_cache, sizeof(marker),
-			      GFP_KERNEL);
+	buf = page_frag_alloc_va(&svsk->sk_frag_cache, sizeof(marker),
+				 GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 	memcpy(buf, &marker, sizeof(marker));
@@ -1235,7 +1235,7 @@  static int svc_tcp_sendmsg(struct svc_sock *svsk, struct svc_rqst *rqstp,
 	iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
 		      1 + count, sizeof(marker) + rqstp->rq_res.len);
 	ret = sock_sendmsg(svsk->sk_sock, &msg);
-	page_frag_free(buf);
+	page_frag_free_va(buf);
 	if (ret < 0)
 		return ret;
 	*sentp += ret;