Re: [PATCH 0/3] implement readpages() for block device to optimize sequential read

From: Andrew Morton
Date: Thu Aug 14 2014 - 18:04:32 EST


On Tue, 5 Aug 2014 23:38:31 +0900 Akinobu Mita <akinobu.mita@xxxxxxxxx> wrote:

> This patchset implements readpages() operation for block device by
> using mpage_readpages() which can create multipage BIOs instead of
> BIOs for each page and reduce system CPU time consumption.

Patchset is simple and straightforward enough. But who the
heck cares about the performance of buffered reads from /dev/XXX?
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