linux-kernel - [GIT PULL] target fixes for v3.13

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Message-ID: <1389917384.5567.718.camel@haakon3.risingtidesystems.com>
Date:	Thu, 16 Jan 2014 16:09:44 -0800
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	target-devel <target-devel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, kmo@...erainc.com
Subject: [GIT PULL] target fixes for v3.13

Hello Linus,

Here are the outstanding target fixes for v3.13 code.

Please go ahead and pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git master 

This series addresses a specific >= v3.12 regression related to the
iscsi-target percpu_ida conversion that has been reported during stress
testing over the last weeks.

The regression involves percpu_ida_alloc() going into uninterruptible
sleep while waiting for outstanding tags to be freed, thus not accepting
signals to force an return once a connection reset event has occurred.  

This change allows the percpu_ida tag allocator to optionally use
interruptible sleep that iscsi-target expects, while still leaving the
functionality + interface for existing percpu_ida consumers unchanged.

Thank you,

--nab

Kent Overstreet (1):
  percpu_ida: Allow tag alloc interface to interruptible sleep

Nicholas Bellinger (2):
  iscsi-target: Fix connection reset hang with percpu_ida_alloc
  iscsi-target: Pre-allocate more tags to avoid ack starvation

 drivers/target/iscsi/iscsi_target_nego.c |    2 +-
 drivers/target/iscsi/iscsi_target_util.c |    8 ++++++--
 include/linux/percpu_ida.h               |   10 +++++++++-
 lib/percpu_ida.c                         |   15 ++++++++++-----
 4 files changed, 26 insertions(+), 9 deletions(-)

-- 
1.7.10.4

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