From: Jan Vesely <jvesely@redhat.com>
To: linux-scsi@vger.kernel.org, axboe@kernel.dk
Cc: James.Bottomley@hansenpartnership.com, viro@zeniv.linux.org.uk,
linux-fsdevel@vger.kernel.org
Subject: block: Allow merging of tail pages into the last segment
Date: Thu, 28 Mar 2013 10:38:27 +0100 [thread overview]
Message-ID: <1364463509-24975-1-git-send-email-jvesely@redhat.com> (raw)
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
v3: Use code from __blk_recalc_rq_segments to decide whether the page is
mergeable,
v2: modify a comment
Jan Vesely (2):
block: factor out vector mergeable decision to a helper function
block: modify __bio_add_page check to accept pages that don't start a new
block/blk-merge.c | 52 +++++++++++++++++++++++++++++++---------------------
fs/bio.c | 29 ++++++++++++++++++-----------
include/linux/bio.h | 3 +++
3 files changed, 52 insertions(+), 32 deletions(-)
next reply other threads:[~2013-03-28 9:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-28 9:38 Jan Vesely [this message]
2013-03-28 9:38 ` [PATCH v3 1/2] block: factor out vector mergeable decision to a helper function Jan Vesely
2013-03-28 9:38 ` [PATCH v3 2/2] block: modify __bio_add_page check to accept pages that don't start a new segment Jan Vesely
2013-04-16 8:24 ` block: Allow merging of tail pages into the last segment Jan Vesely
2013-06-03 13:30 ` Jan Vesely
2013-06-21 15:31 ` Jan Vesely
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