lkml.org 
[lkml]   [2014]   [Jul]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] block_dev: implement readpages() to optimize sequential read
Date
Akinobu Mita <akinobu.mita@gmail.com> writes:

> Sequential read from a block device is expected to be equal or faster
> than from the file on a filesystem. But it is not correct due to the
> lack of effective readpages() in the address space operations for
> block device.

Ah, a trip down memory lane. ;-) Here's a thread showing issues with
the last time this was proposed (by me, incidentally):

https://lkml.org/lkml/2009/6/2/480

At the very least, we need to see numbers on a real device, and see it
booted on something with >4k page size before taking this back in.

Cheers,
Jeff


\
 
 \ /
  Last update: 2014-07-17 21:21    [W:0.186 / U:1.316 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site