From 5123aaef42a837028d9082c7de05d697a51044c3 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 13 Jul 2002 20:13:34 +0000 Subject: o Lock some page queue accesses, in particular, those by vm_page_unwire(). --- sys/kern/vfs_bio.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index a3639b43ac176..9b7c7942633ee 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -1473,7 +1473,7 @@ vfs_vmio_release(bp) vm_page_t m; GIANT_REQUIRED; - + vm_page_lock_queues(); for (i = 0; i < bp->b_npages; i++) { m = bp->b_pages[i]; bp->b_pages[i] = NULL; @@ -1509,6 +1509,7 @@ vfs_vmio_release(bp) } } } + vm_page_unlock_queues(); pmap_qremove(trunc_page((vm_offset_t) bp->b_data), bp->b_npages); if (bp->b_bufsize) { @@ -2652,7 +2653,9 @@ allocbuf(struct buf *bp, int size) ; bp->b_pages[i] = NULL; + vm_page_lock_queues(); vm_page_unwire(m, 0); + vm_page_unlock_queues(); } pmap_qremove((vm_offset_t) trunc_page((vm_offset_t)bp->b_data) + (desiredpages << PAGE_SHIFT), (bp->b_npages - desiredpages)); @@ -3386,9 +3389,11 @@ vm_hold_free_pages(struct buf * bp, vm_offset_t from, vm_offset_t to) } bp->b_pages[index] = NULL; pmap_qremove(pg, 1); + vm_page_lock_queues(); vm_page_busy(p); vm_page_unwire(p, 0); vm_page_free(p); + vm_page_unlock_queues(); } } bp->b_npages = newnpages; -- cgit v1.3