Differential D22550 Diff 64862 sys/fs/nullfs/null_vnops.c

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sys/fs/nullfs/null_vnops.c

Show First 20 Lines • Show All 690 Lines • ▼ Show 20 Lines	if (VTONULL(vp) == NULL && error == 0) {
ap->a_flags);		ap->a_flags);
}		}
VOP_UNLOCK(lvp, 0);		VOP_UNLOCK(lvp, 0);
error = vop_stdlock(ap);		error = vop_stdlock(ap);
}		}
vdrop(lvp);		vdrop(lvp);
} else {		} else {
VI_UNLOCK(vp);		VI_UNLOCK(vp);
error = vop_stdlock(ap);		error = vop_stdlock_vnlock(ap);
}		}

return (error);		return (error);
}		}

/*		/*
* We need to process our own vnode unlock and then clear the		* We need to process our own vnode unlock and then clear the
* interlock flag as it applies only to our vnode, not the		* interlock flag as it applies only to our vnode, not the
* vnodes below us on the stack.		* vnodes below us on the stack.
*/		*/
static int		static int
null_unlock(struct vop_unlock_args *ap)		null_unlock(struct vop_unlock_args *ap)
{		{
struct vnode *vp = ap->a_vp;		struct vnode *vp = ap->a_vp;
struct null_node *nn;		struct null_node *nn;
struct vnode *lvp;		struct vnode *lvp;
int error;		int error;

nn = VTONULL(vp);		nn = VTONULL(vp);
if (nn != NULL && (lvp = NULLVPTOLOWERVP(vp)) != NULL) {		if (nn != NULL && (lvp = NULLVPTOLOWERVP(vp)) != NULL) {
vholdnz(lvp);		vholdnz(lvp);
error = VOP_UNLOCK(lvp, 0);		error = VOP_UNLOCK(lvp, 0);
vdrop(lvp);		vdrop(lvp);
} else {		} else {
error = vop_stdunlock(ap);		error = vop_stdunlock_vnlock(ap);
}		}

return (error);		return (error);
}		}

/*		/*
* Do not allow the VOP_INACTIVE to be passed to the lower layer,		* Do not allow the VOP_INACTIVE to be passed to the lower layer,
* since the reference count on the lower vnode is not related to		* since the reference count on the lower vnode is not related to
▲ Show 20 Lines • Show All 189 Lines • ▼ Show 20 Lines	struct vop_vector null_vnodeops = {
.vop_access = null_access,		.vop_access = null_access,
.vop_accessx = null_accessx,		.vop_accessx = null_accessx,
.vop_advlockpurge = vop_stdadvlockpurge,		.vop_advlockpurge = vop_stdadvlockpurge,
.vop_bmap = VOP_EOPNOTSUPP,		.vop_bmap = VOP_EOPNOTSUPP,
.vop_getattr = null_getattr,		.vop_getattr = null_getattr,
.vop_getwritemount = null_getwritemount,		.vop_getwritemount = null_getwritemount,
.vop_inactive = null_inactive,		.vop_inactive = null_inactive,
.vop_need_inactive = null_need_inactive,		.vop_need_inactive = null_need_inactive,
.vop_islocked = vop_stdislocked,		.vop_islocked = vop_stdislocked_vnlock,
.vop_lock1 = null_lock,		.vop_lock1 = null_lock,
.vop_lookup = null_lookup,		.vop_lookup = null_lookup,
.vop_open = null_open,		.vop_open = null_open,
.vop_print = null_print,		.vop_print = null_print,
.vop_reclaim = null_reclaim,		.vop_reclaim = null_reclaim,
.vop_remove = null_remove,		.vop_remove = null_remove,
.vop_rename = null_rename,		.vop_rename = null_rename,
.vop_rmdir = null_rmdir,		.vop_rmdir = null_rmdir,
.vop_setattr = null_setattr,		.vop_setattr = null_setattr,
.vop_strategy = VOP_EOPNOTSUPP,		.vop_strategy = VOP_EOPNOTSUPP,
.vop_unlock = null_unlock,		.vop_unlock = null_unlock,
.vop_vptocnp = null_vptocnp,		.vop_vptocnp = null_vptocnp,
.vop_vptofh = null_vptofh,		.vop_vptofh = null_vptofh,
.vop_add_writecount = null_add_writecount,		.vop_add_writecount = null_add_writecount,
};		};