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| author | jhb <jhb@FreeBSD.org> | 2012-03-08 20:27:20 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2012-03-08 20:27:20 +0000 |
| commit | 19feaba08bc6b84c117bd21cc71e139c6d086ed7 (patch) | |
| tree | 8f19e446f40b0494d383b5102ee060aeb4617503 /sys/vm/vnode_pager.c | |
| parent | 4fea355eb2254754b2e522d87d81c5562252116a (diff) | |
| download | FreeBSD-src-19feaba08bc6b84c117bd21cc71e139c6d086ed7.zip FreeBSD-src-19feaba08bc6b84c117bd21cc71e139c6d086ed7.tar.gz | |
Add KTR_VFS traces to track modifications to a vnode's writecount.
Diffstat (limited to 'sys/vm/vnode_pager.c')
| -rw-r--r-- | sys/vm/vnode_pager.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/vm/vnode_pager.c b/sys/vm/vnode_pager.c index 609205a..c5b6c17 100644 --- a/sys/vm/vnode_pager.c +++ b/sys/vm/vnode_pager.c @@ -272,6 +272,8 @@ vnode_pager_dealloc(object) if (object->un_pager.vnp.writemappings > 0) { object->un_pager.vnp.writemappings = 0; vp->v_writecount--; + CTR3(KTR_VFS, "%s: vp %p v_writecount decreased to %d", + __func__, vp, vp->v_writecount); } vp->v_object = NULL; vp->v_vflag &= ~VV_TEXT; @@ -1241,9 +1243,13 @@ vnode_pager_update_writecount(vm_object_t object, vm_offset_t start, if (old_wm == 0 && object->un_pager.vnp.writemappings != 0) { ASSERT_VOP_ELOCKED(vp, "v_writecount inc"); vp->v_writecount++; + CTR3(KTR_VFS, "%s: vp %p v_writecount increased to %d", + __func__, vp, vp->v_writecount); } else if (old_wm != 0 && object->un_pager.vnp.writemappings == 0) { ASSERT_VOP_ELOCKED(vp, "v_writecount dec"); vp->v_writecount--; + CTR3(KTR_VFS, "%s: vp %p v_writecount decreased to %d", + __func__, vp, vp->v_writecount); } VM_OBJECT_UNLOCK(object); } |
