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Index: head/sys/kern/vfs_subr.c
===================================================================
--- head/sys/kern/vfs_subr.c
+++ head/sys/kern/vfs_subr.c
@@ -122,6 +122,10 @@
SYSCTL_ULONG(_vfs, OID_AUTO, numvnodes, CTLFLAG_RD, &numvnodes, 0,
"Number of vnodes in existence");
+static u_long vnodes_created;
+SYSCTL_ULONG(_vfs, OID_AUTO, vnodes_created, CTLFLAG_RD, &vnodes_created,
+ 0, "Number of vnodes created by getnewvnode");
+
/*
* Conversion tables for conversion from vnode types to inode formats
* and back.
@@ -156,6 +160,10 @@
SYSCTL_INT(_vfs, OID_AUTO, vlru_allow_cache_src, CTLFLAG_RW,
&vlru_allow_cache_src, 0, "Allow vlru to reclaim source vnode");
+static u_long recycles_count;
+SYSCTL_ULONG(_vfs, OID_AUTO, recycles, CTLFLAG_RD, &recycles_count, 0,
+ "Number of vnodes recycled to avoid exceding kern.maxvnodes");
+
/*
* Various variables used for debugging the new implementation of
* reassignbuf().
@@ -788,6 +796,7 @@
}
KASSERT((vp->v_iflag & VI_DOOMED) == 0,
("VI_DOOMED unexpectedly detected in vlrureclaim()"));
+ atomic_add_long(&recycles_count, 1);
vgonel(vp);
VOP_UNLOCK(vp, 0);
vdropl(vp);
@@ -988,8 +997,10 @@
__func__, vp);
return (EBUSY);
}
- if ((vp->v_iflag & VI_DOOMED) == 0)
+ if ((vp->v_iflag & VI_DOOMED) == 0) {
+ atomic_add_long(&recycles_count, 1);
vgonel(vp);
+ }
VOP_UNLOCK(vp, LK_INTERLOCK);
vn_finished_write(vnmp);
return (0);
@@ -1093,6 +1104,7 @@
atomic_add_long(&numvnodes, 1);
mtx_unlock(&vnode_free_list_mtx);
alloc:
+ atomic_add_long(&vnodes_created, 1);
vp = (struct vnode *) uma_zalloc(vnode_zone, M_WAITOK|M_ZERO);
/*
* Setup locks.

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