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2008 Nov 05
0
[PATCH] blktap: ensure vma->vm_mm''s mmap_sem is being held whenever it is being modified
...a ? info->vma->vm_mm : NULL;
+
if (info->vma != NULL &&
xen_feature(XENFEAT_auto_translated_physmap)) {
- down_write(&info->vma->vm_mm->mmap_sem);
+ down_write(&mm->mmap_sem);
zap_page_range(info->vma,
MMAP_VADDR(info->user_vstart, u_idx, 0),
req->nr_pages << PAGE_SHIFT, NULL);
- up_write(&info->vma->vm_mm->mmap_sem);
+ up_write(&mm->mmap_sem);
return;
}
@@ -1039,10 +1046,13 @@ static void fast_flush_area(pending_req_
if (khandle->user != INVALID_GRANT_HANDLE) {
BUG_ON(x...