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Subject: Re: [PATCH 1/9] mm: Introduce new vm_insert_range API
From: William Kucharski <william.kucharski@oracle.com>
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Date: Wed, 21 Nov 2018 07:29:37 -0700
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To: Matthew Wilcox <willy@infradead.org>
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> On Nov 21, 2018, at 5:35 AM, Matthew Wilcox <willy@infradead.org> =
wrote:
>=20
> It's probably better to be more explicit and answer Randy's question:
>=20
> * If we fail to insert any page into the vma, the function will return
> * immediately leaving any previously-inserted pages present.  Callers
> * from the mmap handler may immediately return the error as their
> * caller will destroy the vma, removing any successfully-inserted =
pages.
> * Other callers should make their own arrangements for calling =
unmap_region().

That works for me as well.