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Re: [PATCH 2/2] mpt3sas: Refcount fw_events and fix unsafe list usage

From Calvin Owens <calvinowens@fb.com>
Newsgroups linux.kernel
Subject Re: [PATCH 2/2] mpt3sas: Refcount fw_events and fix unsafe list usage
Date 2015-08-27 04:10 +0200
Message-ID <q1UNz-7ij-3@gated-at.bofh.it> (permalink)
References <q1AlP-345-3@gated-at.bofh.it> <q1AlP-345-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wednesday 08/26 at 04:09 +0000, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <nab@linux-iscsi.org>
> 
> The fw_event_work struct is concurrently referenced at shutdown, so
> add a refcount to protect it, and refactor the code to use it.
> 
> Additionally, refactor _scsih_fw_event_cleanup_queue() such that it
> no longer iterates over the list without holding the lock, since
> _firmware_event_work() concurrently deletes items from the list.
> 
> This patch is a port of Calvin's PATCH-v4 for mpt2sas code.
> 
> Cc: Calvin Owens <calvinowens@fb.com>
> Cc: Christoph Hellwig <hch@infradead.org>
> Cc: Sreekanth Reddy <sreekanth.reddy@avagotech.com>
> Cc: MPT-FusionLinux.pdl <MPT-FusionLinux.pdl@avagotech.com>
> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
> ---
>  drivers/scsi/mpt3sas/mpt3sas_scsih.c | 116 ++++++++++++++++++++++++++++-------
>  1 file changed, 94 insertions(+), 22 deletions(-)

Looks good, thanks again for this.

Reviewed-by: Calvin Owens <calvinowens@fb.com>
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[PATCH 2/2] mpt3sas: Refcount fw_events and fix unsafe list usage "Nicholas A. Bellinger" <nab@daterainc.com> - 2015-08-26 06:20 +0200
  Re: [PATCH 2/2] mpt3sas: Refcount fw_events and fix unsafe list usage Calvin Owens <calvinowens@fb.com> - 2015-08-27 04:10 +0200

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