From 1dc1263413262d13f45f42d89c554d0ddc167ca2 Mon Sep 17 00:00:00 2001 From: kmacy Date: Fri, 30 Apr 2010 00:46:43 +0000 Subject: On Alan's advice, rather than do a wholesale conversion on a single architecture from page queue lock to a hashed array of page locks (based on a patch by Jeff Roberson), I've implemented page lock support in the MI code and have only moved vm_page's hold_count out from under page queue mutex to page lock. This changes pmap_extract_and_hold on all pmaps. Supported by: Bitgravity Inc. Discussed with: alc, jeffr, and kib --- sys/net/bpf_zerocopy.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sys/net/bpf_zerocopy.c') diff --git a/sys/net/bpf_zerocopy.c b/sys/net/bpf_zerocopy.c index a1dd923..3cf4b8d 100644 --- a/sys/net/bpf_zerocopy.c +++ b/sys/net/bpf_zerocopy.c @@ -168,10 +168,12 @@ zbuf_sfbuf_get(struct vm_map *map, vm_offset_t uaddr) VM_PROT_WRITE); if (pp == NULL) return (NULL); + vm_page_lock(pp); vm_page_lock_queues(); vm_page_wire(pp); vm_page_unhold(pp); vm_page_unlock_queues(); + vm_page_unlock(pp); sf = sf_buf_alloc(pp, SFB_NOWAIT); if (sf == NULL) { zbuf_page_free(pp); -- cgit v1.1