linux-kernel - Re: misc: ocxl: Change return type for fault handler

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Date:   Fri, 13 Jul 2018 18:27:10 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Michael Ellerman <patch-notifications@...erman.id.au>
Cc:     Matthew Wilcox <willy@...radead.org>, fbarrat@...ux.vnet.ibm.com,
        Andrew Donnellan <andrew.donnellan@....ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg KH <gregkh@...uxfoundation.org>,
        brajeswar.linux@...il.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        Sabyasachi Gupta <sabyasachi.linux@...il.com>
Subject: Re: misc: ocxl: Change return type for fault handler

On Wed, Jul 11, 2018 at 6:54 PM, Michael Ellerman
<patch-notifications@...erman.id.au> wrote:
> On Mon, 2018-06-11 at 20:29:04 UTC, Souptick Joarder wrote:
>> Use new return type vm_fault_t for fault handler. For
>> now, this is just documenting that the function returns
>> a VM_FAULT value rather than an errno. Once all instances
>> are converted, vm_fault_t will become a distinct type.
>>
>> Ref-> commit 1c8f422059ae ("mm: change return type to vm_fault_t")
>>
>> There is an existing bug when vm_insert_pfn() can return
>> ENOMEM which was ignored and VM_FAULT_NOPAGE returned as
>> default. The new inline vmf_insert_pfn() has removed
>> this inefficiency by returning correct vm_fault_ type.
>>
>> Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
>> Acked-by: Andrew Donnellan <andrew.donnellan@....ibm.com>
>> Acked-by: Frederic Barrat <fbarrat@...ux.vnet.ibm.com>
>
> Applied to powerpc next, thanks.
>
> https://git.kernel.org/powerpc/c/a545cf032d11437ed86e62f00d4991
>
> cheers

Thanks :)