diff options
Diffstat (limited to 'sys/vm/vm_fault.c')
| -rw-r--r-- | sys/vm/vm_fault.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index 50bf725..5e81333 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -292,7 +292,7 @@ vm_fault_hold(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type, struct faultstate fs; struct vnode *vp; vm_page_t m; - int ahead, behind, cluster_offset, error, locked; + int ahead, behind, cluster_offset, dead, error, locked; hardfault = 0; growstack = TRUE; @@ -421,11 +421,18 @@ fast_failed: fs.pindex = fs.first_pindex; while (TRUE) { /* - * If the object is dead, we stop here + * If the object is marked for imminent termination, + * we retry here, since the collapse pass has raced + * with us. Otherwise, if we see terminally dead + * object, return fail. */ - if (fs.object->flags & OBJ_DEAD) { + if ((fs.object->flags & OBJ_DEAD) != 0) { + dead = fs.object->type == OBJT_DEAD; unlock_and_deallocate(&fs); - return (KERN_PROTECTION_FAILURE); + if (dead) + return (KERN_PROTECTION_FAILURE); + pause("vmf_de", 1); + goto RetryFault; } /* |
