From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Mon, 20 Jan 2014 03:36:24 +0000 (+0000)
Subject: iscsi-target: Fix connection reset hang with percpu_ida_alloc
X-Git-Tag: v3.14-rc1~17^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=555b270e25b0279b98083518a85f4b1da144a181;p=pandora-kernel.git

iscsi-target: Fix connection reset hang with percpu_ida_alloc

This patch addresses a bug where connection reset would hang
indefinately once percpu_ida_alloc() was starved for tags, due
to the fact that it always assumed uninterruptible sleep mode.

So now make percpu_ida_alloc() check for signal_pending_state() for
making interruptible sleep optional, and convert iscsit_allocate_cmd()
to set TASK_INTERRUPTIBLE for GFP_KERNEL, or TASK_RUNNING for
GFP_ATOMIC.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Kent Overstreet <kmo@daterainc.com>
Cc: <stable@vger.kernel.org> #3.12+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

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