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| author | Changli Gao <xiaosuo@gmail.com> | 2010-12-01 02:52:57 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-06 12:59:07 -0800 |
| commit | c56b4d90123b77e29a91b9b96bb791f929139d8e (patch) | |
| tree | 1bf543b3c47c20f26eb4378ceb9fc3a1edd0f3f4 /net/packet | |
| parent | 0af55bb58f8fa7865004ac48d16affe125ac1b7f (diff) | |
| download | linux-3.10-c56b4d90123b77e29a91b9b96bb791f929139d8e.tar.gz linux-3.10-c56b4d90123b77e29a91b9b96bb791f929139d8e.tar.bz2 linux-3.10-c56b4d90123b77e29a91b9b96bb791f929139d8e.zip | |
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>
Diffstat (limited to 'net/packet')
| -rw-r--r-- | net/packet/af_packet.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 26fbeb140a6..a11c731d2ee 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -167,7 +167,6 @@ static int packet_set_ring(struct sock *sk, struct tpacket_req *req, #define PGV_FROM_VMALLOC 1 struct pgv { char *buffer; - unsigned char flags; }; struct packet_ring_buffer { @@ -2342,7 +2341,7 @@ static void free_pg_vec(struct pgv *pg_vec, unsigned int order, 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 @@ static void free_pg_vec(struct pgv *pg_vec, unsigned int order, 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 @@ static inline char *alloc_one_pg_vec_page(unsigned long order, /* * __get_free_pages failed, fall back to vmalloc */ - *flags |= PGV_FROM_VMALLOC; buffer = vzalloc((1 << order) * PAGE_SIZE); if (buffer) @@ -2377,7 +2374,6 @@ static inline char *alloc_one_pg_vec_page(unsigned long order, /* * 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 @@ static struct pgv *alloc_pg_vec(struct tpacket_req *req, int order) 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 @@ static int packet_mmap(struct file *file, struct socket *sock, 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; |