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- Revert kern/vfs_subr.c revision 1.444. The vm_object's size isn't

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trustworthy for vnode-backed objects.
 - Restore the old behavior of vm_object_page_remove() when the end
   of the given range is zero.  Add a comment to vm_object_page_remove()
   regarding this behavior.

Reported by:	iedowse
This commit is contained in:
Alan Cox 2003-05-03 08:09:24 +00:00
parent 5daa806da0
commit bff99f0d12
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=114570
2 changed files with 7 additions and 5 deletions
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2
sys/kern/vfs_subr.c
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@ -1188,7 +1188,7 @@ vinvalbuf(vp, flags, cred, td, slpflag, slptimeo)
*/
if (VOP_GETVOBJECT(vp, &object) == 0) {
VM_OBJECT_LOCK(object);
vm_object_page_remove(object, 0, object->size,
vm_object_page_remove(object, 0, 0,
(flags & V_SAVE) ? TRUE : FALSE);
VM_OBJECT_UNLOCK(object);
}

10
sys/vm/vm_object.c
View File

@ -1675,10 +1675,12 @@ vm_object_collapse(vm_object_t object)
}
/*
* vm_object_page_remove: [internal]
* vm_object_page_remove:
*
* Removes all physical pages in the specified
* object range from the object's list of pages.
* Removes all physical pages in the given range from the
* object's list of pages. If the range's end is zero, all
* physical pages from the range's start to the end of the object
* are deleted.
*
* The object must be locked.
*/
@ -1716,7 +1718,7 @@ vm_object_page_remove(vm_object_t object, vm_pindex_t start, vm_pindex_t end,
* or (2) NULL.
*/
for (;
p != NULL && p->pindex < end;
p != NULL && (p->pindex < end || end == 0);
p = next) {
next = TAILQ_NEXT(p, listq);