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Message-ID: <1464068854.22249.69.camel@haakon3.risingtidesystems.com> Date: Mon, 23 May 2016 22:47:34 -0700 From: "Nicholas A. Bellinger" <nab@...ux-iscsi.org> To: Bryant G Ly <bryantly@...ux.vnet.ibm.com> Cc: Michael Cyr <mikecyr@...ux.vnet.ibm.com>, rjui@...adcom.com, sbranden@...adcom.com, jonmason@...adcom.com, linux-scsi@...r.kernel.org, target-devel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, bcm-kernel-feedback-list@...adcom.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH] Fix for hang of Ordered task in TCM Hi Bryant, On Mon, 2016-05-23 at 19:17 -0400, Bryant G Ly wrote: > Quoting "Nicholas A. Bellinger" <nab@...ux-iscsi.org>: > > <SNIP> > > > > So AFAICT for delayed commands, the above patch ends up skipping these > > three checks subsequently when doing __target_execute_cmd() directly > > from target_restart_delayed_cmds(), no..? > > > > After pondering this some more, what about moving these checks into > > __target_execute_cmd() to handle both target_core_transport.c cases > > instead..? > > > > We'll also need a parameter for internal COMPARE_AND_WRITE usage > > within compare_and_write_callback(), to bypass checks upon secondary > > ->execute_cmd() WRITE payload submission after READ + COMPARE has > > completed successfully. <SNIP> > Looks good to me. Thanks for the review! > Nick just to let you know I've been working with > Mike on VSCSI Target Fabric and we need this patch in kernel 4.4 do > you know of the process in getting that there? So pending a bit more list feedback + testing across multiple fabric drivers, it's been added for the moment to target-pending/queue as post -rc1 material. As it merged into target-pending/master next week, the extra stable CC' can be added to be picked up for linux-4.4.y stable and friends. Also AFAIK, we've not had reports of other SCSI host environments triggering this bug, but it's still a good idea to consider it for linux-3.x.y backport at some point as well.
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