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mm: allow pfnmap ->fault()s

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Take out an assertion to allow ->fault handlers to service PFNMAP regions.
This is required to reimplement .nopfn handlers with .fault handlers and
subsequently remove nopfn.

Signed-off-by: Nick Piggin <[email protected]>
Acked-by: Jes Sorensen <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Nick Piggin 2008-05-23 13:04:18 -07:00 • committed by Linus Torvalds
commit 42172d751b
1 changed files with 0 additions and 2 deletions
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2
mm/memory.c
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@ -2295,8 +2295,6 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
vmf.flags = flags;
vmf.page = NULL;
BUG_ON(vma->vm_flags & VM_PFNMAP);
ret = vma->vm_ops->fault(vma, &vmf);
if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))
return ret;