Re: [PATCH 4/5] dax: use sb_issue_zerout instead of calling dax_clear_sectors

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Mar 29, 2016 at 11:57 AM, Verma, Vishal L
<vishal.l.verma@xxxxxxxxx> wrote:
> On Mon, 2016-03-28 at 16:34 -0700, Dan Williams wrote:
>
> <>
>
>> Seems kind of sad to fail the fault due to a bad block when we were
>> going to zero it anyway, right?  I'm not seeing a compelling reason to
>> keep any zeroing in fs/dax.c.
>
> Agreed - but how do we do this? clear_pmem needs to be able to clear an
> arbitrary number of bytes, but to go through the driver, we'd need to
> send down a bio? If only the driver had an rw_bytes like interface that
> could be used by anyone... :)

I think we're ok because clear_pmem() will always happen on PAGE_SIZE,
or HPAGE_SIZE boundaries.
--
To unsubscribe from this list: send the line "unsubscribe linux-block" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux RAID]     [Linux SCSI]     [Linux ATA RAID]     [IDE]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Device Mapper]

  Powered by Linux