From: Christoph Hellwig <hch@infradead.org>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Jens Axboe <axboe@kernel.dk>, Kent Overstreet <kmo@daterainc.com>,
Shaohua Li <shli@kernel.org>,
Christoph Hellwig <hch@infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH RFC] block: Eliminate first argument of submit_bio()
Date: Mon, 2 Jun 2014 04:32:28 -0700 [thread overview]
Message-ID: <20140602113228.GA26951@infradead.org> (raw)
In-Reply-To: <538C4767.5050207@acm.org>
On Mon, Jun 02, 2014 at 11:44:07AM +0200, Bart Van Assche wrote:
> The submit_bio() API is confusing. Merge functions like
> raid5_mergeable_bvec() can only work correctly if bi_rw is set
> before bio_add_page() has been called. submit_bio() modifies
> bi_rw after bio_add_page() has been called. Hence remove the
> first argument of submit_bio() and let the caller set bi_rw.
> Note: some but not all submit_bio() callers have been fixed
> such that bi_rw is set before bio_add_page() is called.
I like this a lot!
next prev parent reply other threads:[~2014-06-02 11:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-02 9:44 [PATCH RFC] block: Eliminate first argument of submit_bio() Bart Van Assche
2014-06-02 11:32 ` Christoph Hellwig [this message]
2014-06-02 16:04 ` Jens Axboe
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