diff options
Diffstat (limited to 'sys/kern/vfs_default.c')
| -rw-r--r-- | sys/kern/vfs_default.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/sys/kern/vfs_default.c b/sys/kern/vfs_default.c index a68182579653..e2be1939b871 100644 --- a/sys/kern/vfs_default.c +++ b/sys/kern/vfs_default.c @@ -189,7 +189,13 @@ vop_stdlock(ap) struct proc *a_p; } */ *ap; { - struct lock *l = (struct lock*)ap->a_vp->v_data; + struct lock *l; + + if ((l = (struct lock *)ap->a_vp->v_data) == NULL) { + if (ap->a_flags & LK_INTERLOCK) + simple_unlock(&ap->a_vp->v_interlock); + return 0; + } return (lockmgr(l, ap->a_flags, &ap->a_vp->v_interlock, ap->a_p)); } @@ -202,7 +208,13 @@ vop_stdunlock(ap) struct proc *a_p; } */ *ap; { - struct lock *l = (struct lock*)ap->a_vp->v_data; + struct lock *l; + + if ((l = (struct lock *)ap->a_vp->v_data) == NULL) { + if (ap->a_flags & LK_INTERLOCK) + simple_unlock(&ap->a_vp->v_interlock); + return 0; + } return (lockmgr(l, ap->a_flags | LK_RELEASE, &ap->a_vp->v_interlock, ap->a_p)); @@ -214,7 +226,10 @@ vop_stdislocked(ap) struct vnode *a_vp; } */ *ap; { - struct lock *l = (struct lock*)ap->a_vp->v_data; + struct lock *l; + + if ((l = (struct lock *)ap->a_vp->v_data) == NULL) + return 0; return (lockstatus(l)); } |