linux-kernel - block & iov_iter: use bvec iterator to implement iterate

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1457436586-26833-1-git-send-email-ming.lei@canonical.com>
Date:	Tue,  8 Mar 2016 19:29:42 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org
Cc:	linux-block@...r.kernel.org, Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Anton Altaparmakov <anton@...era.com>
Subject: block & iov_iter: use bvec iterator to implement iterate_bvec()

Hi Guys,

The 1st two patches move bvec iterator helpers out from bio.h, then
they can be used even if CONFIG_BLOCK is disabled, so not necessary
to use iov iter own approach to do the job.

One motivation is that in the future we may support multipage bvecs,
as interests[1] have been shown in this idea, so looks better to
unify the implementation now.

[1], http://marc.info/?w=2&r=1&s=++[LSF%2FMM+ATTEND]+block%3A+multipage+bvecs&q=t
 

 include/linux/bio.h       | 55 +------------------------------------------
 include/linux/blk_types.h |  4 ++--
 include/linux/bvec_iter.h | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/iov_iter.c            | 31 +++++++++---------------
 4 files changed, 93 insertions(+), 76 deletions(-)


Thanks,
Ming