From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: Debug scsi message in linux 4.19.31 Date: Sun, 24 Mar 2019 20:04:07 -0400 Message-ID: References: <624bbdbb24ad7db69be29956cbf14689fd003cdb.camel@gmx.com> <25d0ddcb-b603-6e0d-d512-b188813837bf@infradead.org> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <25d0ddcb-b603-6e0d-d512-b188813837bf@infradead.org> (Randy Dunlap's message of "Sun, 24 Mar 2019 09:18:58 -0700") Sender: linux-kernel-owner@vger.kernel.org To: Randy Dunlap Cc: Hussam Al-Tayeb , linux-kernel@vger.kernel.org, linux-scsi , "Martin K. Petersen" List-Id: linux-scsi@vger.kernel.org Randy, >> Mar 23 17:40:10 hades kernel: sd 0:0:0:0: [sda] Optimal transfer size 0 >> bytes < PAGE_SIZE (4096 bytes) We're just trying to weed out the devices that report garbage in this field. But of course none of the devices I tested with put 0 in there. >> Does it really belong in an LTS kernel? The patch does fix problems for devices that report a nonsensical value. But it is a regression that it now prints a warning for devices that don't report an optimal I/O size at all. Sorry about that. Will fix tomorrow! -- Martin K. Petersen Oracle Linux Engineering