Assert that the object type for the vnode' non-NULL v_object, passed
to vnode_pager_setsize(), is either OBJT_VNODE, or, if vnode was already reclaimed, OBJT_DEAD. Note that the later is only possible due to some filesystems, in particular, nfsiods from nfs clients, call vnode_pager_setsize() with unlocked vnode. More, if the object is terminated, do not perform the resizing operation. Reviewed by: alc Tested by: pho, bf MFC after: 1 week
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=250028
@ -380,6 +380,12 @@ vnode_pager_setsize(vp, nsize)
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return;
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/* ASSERT_VOP_ELOCKED(vp, "vnode_pager_setsize and not locked vnode"); */
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VM_OBJECT_WLOCK(object);
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if (object->type == OBJT_DEAD) {
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VM_OBJECT_WUNLOCK(object);
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return;
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}
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KASSERT(object->type == OBJT_VNODE,
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("not vnode-backed object %p", object));
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if (nsize == object->un_pager.vnp.vnp_size) {
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/*
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* Hasn't changed size
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