linux-kernel - [PATCH 0/3] implement readpages() for block device to optimize sequential read

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Date:	Tue,  5 Aug 2014 23:38:31 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Akinobu Mita <akinobu.mita@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <axboe@...nel.dk>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Jeff Moyer <jmoyer@...hat.com>, linux-fsdevel@...r.kernel.org
Subject: [PATCH 0/3] implement readpages() for block device to optimize sequential read

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.

Akinobu Mita (3):
  vfs: make guard_bh_eod() more generic
  vfs: guard end of device for mpage interface
  block_dev: implement readpages() to optimize sequential read

 fs/block_dev.c |  7 +++++++
 fs/buffer.c    | 26 ++++++++++++--------------
 fs/internal.h  |  5 +++++
 fs/mpage.c     |  2 ++
 4 files changed, 26 insertions(+), 14 deletions(-)

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Jens Axboe <axboe@...nel.dk>
Cc: Alexander Viro <viro@...iv.linux.org.uk>
Cc: Jeff Moyer <jmoyer@...hat.com>
Cc: linux-fsdevel@...r.kernel.org
-- 
1.9.1

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