af_packet: remove pgv.flags
As we can check if an address is vmalloc address with is_vmalloc_addr(),
we remove pgv.flags. Then we may get more pg_vecs.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 26fbeb1..a11c731 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -167,7 +167,6 @@
#define PGV_FROM_VMALLOC 1
struct pgv {
char *buffer;
- unsigned char flags;
};
struct packet_ring_buffer {
@@ -2342,7 +2341,7 @@
for (i = 0; i < len; i++) {
if (likely(pg_vec[i].buffer)) {
- if (pg_vec[i].flags & PGV_FROM_VMALLOC)
+ if (is_vmalloc_addr(pg_vec[i].buffer))
vfree(pg_vec[i].buffer);
else
free_pages((unsigned long)pg_vec[i].buffer,
@@ -2353,8 +2352,7 @@
kfree(pg_vec);
}
-static inline char *alloc_one_pg_vec_page(unsigned long order,
- unsigned char *flags)
+static inline char *alloc_one_pg_vec_page(unsigned long order)
{
char *buffer = NULL;
gfp_t gfp_flags = GFP_KERNEL | __GFP_COMP |
@@ -2368,7 +2366,6 @@
/*
* __get_free_pages failed, fall back to vmalloc
*/
- *flags |= PGV_FROM_VMALLOC;
buffer = vzalloc((1 << order) * PAGE_SIZE);
if (buffer)
@@ -2377,7 +2374,6 @@
/*
* vmalloc failed, lets dig into swap here
*/
- *flags = 0;
gfp_flags &= ~__GFP_NORETRY;
buffer = (char *)__get_free_pages(gfp_flags, order);
if (buffer)
@@ -2400,8 +2396,7 @@
goto out;
for (i = 0; i < block_nr; i++) {
- pg_vec[i].buffer = alloc_one_pg_vec_page(order,
- &pg_vec[i].flags);
+ pg_vec[i].buffer = alloc_one_pg_vec_page(order);
if (unlikely(!pg_vec[i].buffer))
goto out_free_pgvec;
}
@@ -2585,13 +2580,8 @@
void *kaddr = rb->pg_vec[i].buffer;
int pg_num;
- for (pg_num = 0; pg_num < rb->pg_vec_pages;
- pg_num++) {
- if (rb->pg_vec[i].flags & PGV_FROM_VMALLOC)
- page = vmalloc_to_page(kaddr);
- else
- page = virt_to_page(kaddr);
-
+ for (pg_num = 0; pg_num < rb->pg_vec_pages; pg_num++) {
+ page = pgv_to_page(kaddr);
err = vm_insert_page(vma, start, page);
if (unlikely(err))
goto out;