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Index: sys/kern/vfs_subr.c
===================================================================
--- sys/kern/vfs_subr.c
+++ sys/kern/vfs_subr.c
@@ -1632,6 +1632,7 @@
KASSERT(vp->v_lockf == NULL, ("stale v_lockf %p", vp));
KASSERT(vp->v_pollinfo == NULL, ("stale v_pollinfo %p", vp));
vp->v_type = VNON;
+ vp->v_doomed = false;
vp->v_tag = tag;
vp->v_op = vops;
v_init_counters(vp);
@@ -3271,6 +3272,7 @@
vp->v_lasta = vp->v_clen = vp->v_cstart = vp->v_lastw = 0;
vp->v_iflag = 0;
vp->v_vflag = 0;
+ vp->v_doomed = false;
bo->bo_flag = 0;
uma_zfree(vnode_zone, vp);
}
@@ -3584,9 +3586,15 @@
/*
* Don't vgonel if we're already doomed.
*/
- if (vp->v_iflag & VI_DOOMED)
+ if (vp->v_iflag & VI_DOOMED) {
+ VNASSERT(vp->v_doomed, vp,
+ ("%s: VI_DOOMED and v_doomed mismatch", __func__));
return;
+ }
vp->v_iflag |= VI_DOOMED;
+ VNASSERT(!vp->v_doomed, vp,
+ ("%s: VI_DOOMED and v_doomed mismatch", __func__));
+ vp->v_doomed = true;
/*
* Check to see if the vnode is in use. If so, we have to call
Index: sys/kern/vfs_vnops.c
===================================================================
--- sys/kern/vfs_vnops.c
+++ sys/kern/vfs_vnops.c
@@ -1579,7 +1579,7 @@
("vn_lock: error %d incompatible with flags %#x", error, flags));
if ((flags & LK_RETRY) == 0) {
- if (error == 0 && (vp->v_iflag & VI_DOOMED) != 0) {
+ if (error == 0 && VN_IS_DOOMED(vp)) {
VOP_UNLOCK(vp, 0);
error = ENOENT;
}
Index: sys/sys/vnode.h
===================================================================
--- sys/sys/vnode.h
+++ sys/sys/vnode.h
@@ -103,7 +103,8 @@
* Fields which define the identity of the vnode. These fields are
* owned by the filesystem (XXX: and vgone() ?)
*/
- enum vtype v_type; /* u vnode type */
+ enum vtype v_type:8; /* u vnode type */
+ bool v_doomed; /* v + i is it doomed */
struct vop_vector *v_op; /* u vnode operations vector */
void *v_data; /* u private data for fs */
@@ -889,6 +890,16 @@
#define VOP_UNSET_TEXT_CHECKED(vp) VOP_UNSET_TEXT((vp))
#endif
+#define VN_IS_DOOMED(vp) ({ \
+ struct vnode *_vp = (vp); \
+ bool _doomed = _vp->v_doomed; \
+ bool _flag_doomed = _vp->v_iflag & VI_DOOMED; \
+ \
+ VNASSERT(((_doomed && _flag_doomed) || (!_doomed && !_flag_doomed)),\
+ _vp, ("%s: VI_DOOMED and v_doomed mismatch", __func__)); \
+ _doomed; \
+})
+
void vput(struct vnode *vp);
void vrele(struct vnode *vp);
void vref(struct vnode *vp);

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