From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Thumshirn Subject: Re: [PATCH] sg: reset 'res_in_use' after unlinking reserved array Date: Mon, 24 Apr 2017 10:32:15 +0200 Message-ID: <20170424083214.GA29543@linux-x5ow.site> References: <1493022396-107620-1-git-send-email-hare@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Return-path: Received: from mx2.suse.de ([195.135.220.15]:33679 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1166614AbdDXIcS (ORCPT ); Mon, 24 Apr 2017 04:32:18 -0400 Content-Disposition: inline In-Reply-To: <1493022396-107620-1-git-send-email-hare@suse.de> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Hannes Reinecke Cc: "Martin K. Petersen" , Christoph Hellwig , James Bottomley , Johannes Thumshirn , linux-scsi@vger.kernel.org, Hannes Reinecke On Mon, Apr 24, 2017 at 10:26:36AM +0200, Hannes Reinecke wrote: > Once the reserved page array is unused we can reset the > 'res_in_use' state; here we can do a lazy update without > holding the mutex as we only need to check against > concurrent access, not concurrent release. > > Fixes: 1bc0eb0 ("scsi: sg: protect accesses to 'reserved' page array") > Signed-off-by: Hannes Reinecke > --- Reviewed-by: Johannes Thumshirn -- Johannes Thumshirn Storage jthumshirn@suse.de +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850