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

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Message-ID: <CAFqt6zY=rpak3NGUMcCupvLp_RCwLMCtwfnBBjLfSc+U2vQ3OQ@mail.gmail.com>
Date:   Tue, 19 Jun 2018 10:39:32 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Frederic Barrat <fbarrat@...ux.ibm.com>
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>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Sabyasachi Gupta <sabyasachi.linux@...il.com>,
        brajeswar.linux@...il.com
Subject: Re: [PATCH] misc: ocxl: Change return type for fault handler

On Thu, Jun 14, 2018 at 9:36 PM, Frederic Barrat <fbarrat@...ux.ibm.com> wrote:
>
>
> Le 11/06/2018 à 22:29, Souptick Joarder a écrit :
>>
>> 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>
>> ---
>
>
> Thanks!
>
> Tested and
> Acked-by: Frederic Barrat <fbarrat@...ux.vnet.ibm.com>
>
>

Frederic, is this patch queued for 4.19 ?