From e3ed7ff03feedbf86d915cee4a263fc902fdf899 Mon Sep 17 00:00:00 2001 From: Attilio Rao Date: Fri, 17 May 2013 20:03:55 +0000 Subject: [PATCH] Use readlocking now that assertions on vm_page_lookup() are relaxed. Sponsored by: EMC / Isilon storage division Reviewed by: alc Tested by: flo, pho --- sys/kern/vfs_bio.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index db7d6813dba..5c5bde4819f 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -2772,7 +2772,7 @@ inmem(struct vnode * vp, daddr_t blkno) size = vp->v_mount->mnt_stat.f_iosize; off = (vm_ooffset_t)blkno * (vm_ooffset_t)vp->v_mount->mnt_stat.f_iosize; - VM_OBJECT_WLOCK(obj); + VM_OBJECT_RLOCK(obj); for (toff = 0; toff < vp->v_mount->mnt_stat.f_iosize; toff += tinc) { m = vm_page_lookup(obj, OFF_TO_IDX(off + toff)); if (!m) @@ -2784,11 +2784,11 @@ inmem(struct vnode * vp, daddr_t blkno) (vm_offset_t) ((toff + off) & PAGE_MASK), tinc) == 0) goto notinmem; } - VM_OBJECT_WUNLOCK(obj); + VM_OBJECT_RUNLOCK(obj); return 1; notinmem: - VM_OBJECT_WUNLOCK(obj); + VM_OBJECT_RUNLOCK(obj); return (0); }