src/sys/kern/vfs_vnode.c - diff

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version 1.75, 2017/02/17 08:30:00

version 1.76, 2017/03/06 10:07:52

Line 919 vrecycle(vnode_t *vp)

* On layered file systems waiting for the lock would open a can of

* deadlocks as the lower vnodes may have other active references.

error = vn_lock(vp, LK_EXCLUSIVE | LK_NOWAIT);

error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY | LK_NOWAIT);

mutex_enter(vp->v_interlock);

VSTATE_CHANGE(vp, VS_BLOCKED, VS_ACTIVE);

Line 978 void

vgone(vnode_t *vp)

{

if (vn_lock(vp, LK_EXCLUSIVE) != 0) {

vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);

VSTATE_ASSERT(vp, VS_RECLAIMED);

vrele(vp);

}

mutex_enter(vp->v_interlock);

vcache_reclaim(vp);

VSTATE_WAIT_STABLE(vp);

if (VSTATE_GET(vp) == VS_ACTIVE)

vcache_reclaim(vp);

VSTATE_ASSERT(vp, VS_RECLAIMED);

vrelel(vp, 0);

}