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

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Date:   Wed, 11 Jul 2018 23:24:07 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Souptick Joarder <jrdr.linux@...il.com>, willy@...radead.org,
        fbarrat@...ux.vnet.ibm.com, andrew.donnellan@....ibm.com,
        arnd@...db.de, gregkh@...uxfoundation.org
Cc:     brajeswar.linux@...il.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, sabyasachi.linux@...il.com
Subject: Re: misc: ocxl: Change return type for fault handler

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