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Re: freemaps
On Sun, Dec 15, 2002 at 01:03:26AM -0800, Andrew Morton wrote:
>>> - How does it play with non-linear mappings?
William Lee Irwin III wrote:
>> It doesn't care; they're just vma's parked on a virtual address range
>> like the rest of them.
On Sun, Dec 15, 2002 at 05:03:38PM -0800, Andrew Morton wrote:
> But the searching needs are different. If someone has a nonlinear mmap
> of the 0-1M region of a file and then requests an mmap of the 4-5M region,
> that can just be tacked onto the 0-1M mapping's vma (can't it?).
Well, that's more of a merging criterion that a search criterion. At
any rate, while it's true that they can/could be merged arbitrarily
since they're not actually associated with any particular file offset
range, there isn't any indicator I know of now that would actually
allow this distinction wrt. mergeability to be made.
Bill
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