svn commit: r256956 - in head/sys: cam/ata cam/scsi cddl/contrib/opensolaris/uts/common/fs/zfs cddl/contrib/opensolaris/uts/common/fs/zfs/sys geom sys

[Steven Hartland]

Not familiar with that option, but having a quick look in src
it doesn't seem to be FS specific, seems to be handled by vfs.

Can anyone confirm or deny this?

----- Original Message ----- 
From: "Slawa Olhovchenkov" <slw at zxy.spb.ru>


> On Wed, Oct 23, 2013 at 09:54:59AM +0000, Steven Hartland wrote:
> 
>> Author: smh
>> Date: Wed Oct 23 09:54:58 2013
>> New Revision: 256956
>> URL: http://svnweb.freebsd.org/changeset/base/256956
>> 
>> Log:
>>   Improve ZFS N-way mirror read performance by using load and locality
>>   information.
> 
> What about support F_READAHEAD in ZFS (with prefetch disabled by
> CPU-intensive)?
>

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