tmpfs: recalculate OBJ_TMPFS_VREF on reinstantiating node' vnode

Reported and tested by:	pho
Reviewed by:	markj
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D45119

This commit is contained in:

Konstantin Belousov

2024-05-06 21:31:31 +03:00

parent 663838451e

commit 58d7ac11e7

1 changed files with 7 additions and 3 deletions

									
										sys/fs/tmpfs/tmpfs_subr.c
									
		+7
		-3
	
												View File
												
				@@ -1094,15 +1094,19 @@ tmpfs_alloc_vp(struct mount *mp, struct tmpfs_node *node, int lkflag,

						KASSERT((object->flags & OBJ_TMPFS_VREF) == 0,

						    ("%s: object %p with OBJ_TMPFS_VREF but without vnode",

						    __func__, object));

						KASSERT(object->un_pager.swp.writemappings == 0,

						    ("%s: object %p has writemappings",

						    __func__, object));

						VI_LOCK(vp);

						KASSERT(vp->v_object == NULL, ("Not NULL v_object in tmpfs"));

						vp->v_object = object;

						vn_irflag_set_locked(vp, (tm->tm_pgread ? VIRF_PGREAD : 0) |

						    VIRF_TEXT_REF);

						VI_UNLOCK(vp);

						VNASSERT((object->flags & OBJ_TMPFS_VREF) == 0, vp,

						    ("leaked OBJ_TMPFS_VREF"));

						if (object->un_pager.swp.writemappings > 0) {

							vrefact(vp);

							vlazy(vp);

							vm_object_set_flag(object, OBJ_TMPFS_VREF);

						}

						VM_OBJECT_WUNLOCK(object);

						break;

					case VDIR: