linux-kernel - [PATCH v4 0/2] block: Allow merging of tail pages into the last segment

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Message-Id: <1373644343-6671-1-git-send-email-jvesely@redhat.com>
Date:	Fri, 12 Jul 2013 17:52:21 +0200
From:	Jan Vesely <jvesely@...hat.com>
To:	Jens Axboe <axboe@...nel.dk>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	linux-kernel@...r.kernel.org
Cc:	Kent Overstreet <koverstreet@...gle.com>,
	Rob Evers <revers@...hat.com>, Tomas Henzl <thenzl@...hat.com>,
	Nikola Pajkovsky <npajkovs@...hat.com>,
	Kai Makisara <Kai.Makisara@...umbus.fi>,
	linux-scsi@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Don Howard <dhoward@...hat.com>
Subject: [PATCH v4 0/2] block: Allow merging of tail pages into the last segment

Hi

These patches modify __bio_add_page to accept pages that extent the last bio
segment. some drivers craft their buffers and rely on this behavior (see
message in patch 2 for details)


jan

v4: whitespace fixes to make checkpatch happy

v3: Use code from __blk_recalc_rq_segments to decide whether the page is
    mergeable, 

v2: modify a comment


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