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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Ross Zwisler <ross.zwisler@linux.intel.com>,
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Subject: Re: [PATCH v6 17/17] dax: remove "depends on BROKEN" from FS_DAX_PMD
In-Reply-To: <20161012225022.15507-18-ross.zwisler@linux.intel.com>
References: <20161012225022.15507-1-ross.zwisler@linux.intel.com> <20161012225022.15507-18-ross.zwisler@linux.intel.com>
Date: Mon, 17 Oct 2016 11:27:24 +0530
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Ross Zwisler <ross.zwisler@linux.intel.com> writes:

> Now that DAX PMD faults are once again working and are now participating in
> DAX's radix tree locking scheme, allow their config option to be enabled.
>
> Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
> ---
>  fs/Kconfig | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/fs/Kconfig b/fs/Kconfig
> index 2bc7ad7..b6f0fce 100644
> --- a/fs/Kconfig
> +++ b/fs/Kconfig
> @@ -55,7 +55,6 @@ config FS_DAX_PMD
>  	depends on FS_DAX
>  	depends on ZONE_DEVICE
>  	depends on TRANSPARENT_HUGEPAGE
> -	depends on BROKEN
>  
>  endif # BLOCK


This series made dax_pmd_fault return VM_FAULT_FALLBACK in [PATCH v6 09/17] dax: remove dax_pmd_fault(). 
That essentially disable dax pmd for ext4. Any plans to fix that ?

-aneesh