linux-kernel - Re: [PATCH v2] block: make sure big bio is splitted into at most 256 bvecs

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Message-ID: <20160811140253.GA2867@infradead.org>
Date:	Thu, 11 Aug 2016 07:02:53 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Eric Wheeler <bcache@...ts.ewheeler.net>
Cc:	Ming Lei <ming.lei@...onical.com>, Jens Axboe <axboe@...com>,
	linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
	linux-bcache@...r.kernel.org, linux-raid@...r.kernel.org,
	kent.overstreet@...il.com, Christoph Hellwig <hch@...radead.org>,
	Sebastian Roesner <sroesner-kernelorg@...sner-online.de>,
	"4.3+" <stable@...r.kernel.org>, Shaohua Li <shli@...com>
Subject: Re: [PATCH v2] block: make sure big bio is splitted into at most 256
 bvecs

Please just fix bcache to not submit bios larger than BIO_MAX_PAGES for
now, until we can support such callers in general and enable common
used code to do so.