Re: [LSF/MM TOPIC NOTES] x86 ZONE_DMA love

On Thu, Apr 26, 2018 at 09:54:06PM +, Luis R. Rodriguez wrote: > In practice if you don't have a floppy device on x86, you don't need ZONE_DMA, I call BS on that, and you actually explain later why it it BS due to some drivers using it more explicitly. But even more importantly we have

Re: [PATCH] usb-storage: stop using block layer bounce buffers

On Sun, Apr 15, 2018 at 11:24:11AM -0400, Alan Stern wrote: > On Sun, 15 Apr 2018, Christoph Hellwig wrote: > > > USB host controllers now must handle highmem, so we can get rid of bounce > > buffering highmem pages in the block layer. > > Sorry, I don't quite understand what you are saying. Do

Re: [PATCH] scsi_transport_sas: don't bounce highmem pages for the smp handler

Johannes, can you take a look at this? You are one of the few persons who cared about SMP passthrough in the recent past. On Sun, Apr 15, 2018 at 04:52:37PM +0200, Christoph Hellwig wrote: > All three instance of ->smp_handler deal with highmem backed requests > just fine. > > Signed-off-by:

Re: [PATCH 07/21] qedf: Add dcbx_not_wait module parameter so we won't wait for DCBX convergence to start discovery.

Hi Chad, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on mkp-scsi/for-next] [also build test WARNING on v4.17-rc2 next-20180426] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com

[RFC PATCH] qedf: qedf_dcbx_no_wait can be static

Fixes: d9867ecbae88 ("qedf: Add dcbx_not_wait module parameter so we won't wait for DCBX convergence to start discovery.") Signed-off-by: Fengguang Wu --- qedf_main.c |2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/qedf/qedf_main.c

Re: [Lsf-pc] [LSF/MM TOPIC NOTES] x86 ZONE_DMA love

On Thu, 2018-04-26 at 21:54 +, Luis R. Rodriguez wrote: > Below are my notes on the ZONE_DMA discussion at LSF/MM 2018. There > were some > earlier discussion prior to my arrival to the session about moving > around > ZOME_DMA around, if someone has notes on that please share too :) We took

Re: [PATCH] bsg referencing bus driver module

Any thoughts on this? Can we really drop a reference from a child device (bsg_class_device) to a parent device (Scsi_Host) while the child device is still around at fc_bsg_remove time? If not, please consider a fix with module references. I realized that the previous version of the fix had a

Proposal

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[LSF/MM TOPIC NOTES] x86 ZONE_DMA love

Below are my notes on the ZONE_DMA discussion at LSF/MM 2018. There were some earlier discussion prior to my arrival to the session about moving around ZOME_DMA around, if someone has notes on that please share too :) PS. I'm not subscribed to linux-mm Luis Determining you don't need to

Re: [PATCH v3 0/6] scsi: handle special return codes for ABORTED COMMAND

On Fri, 2018-04-20 at 19:15 -0400, Martin K. Petersen wrote: > > Much better, thanks for reworking this. Applied to 4.18/scsi-queue. Thank you! By the way, I've been wondering whether declaring blist_flags_t __bitwise was a wise decision. blist_flags_t is kernel-internal, thus endianness

Re: [PATCH 2/5] ide: kill ide_toggle_bounce

On 4/26/18 1:20 AM, Christoph Hellwig wrote: > On Tue, Apr 24, 2018 at 08:02:56PM -0600, Jens Axboe wrote: >> On 4/24/18 12:16 PM, Christoph Hellwig wrote: >>> ide_toggle_bounce did select various strange block bounce limits, including >>> not bouncing at all as soon as an iommu is present in the

Re: MegaCli fails to communicate with Raid-Controller

On 23. Apr 2018, at 11:03, Volker Schwicking wrote: > > I will add the printk to dma_alloc_coherent() as well to see, which request > actually fails. But i have to be a bit patient since its a production system > and the customers aren’t to happy about reboots.

[Bug 199435] HPSA + P420i resetting logical Direct-Access never complete

https://bugzilla.kernel.org/show_bug.cgi?id=199435 --- Comment #20 from Anthony Hausman (anthonyhaussm...@gmail.com) --- So here are all my test. With the agent enable, using hp check command disk (hpacucli/ssacli and hpssacli) and launching a sg_reset, the reset has no problem on the problematic

Re: [PATCH 2/5] ide: kill ide_toggle_bounce

On Tue, Apr 24, 2018 at 08:02:56PM -0600, Jens Axboe wrote: > On 4/24/18 12:16 PM, Christoph Hellwig wrote: > > ide_toggle_bounce did select various strange block bounce limits, including > > not bouncing at all as soon as an iommu is present in the system. Given > > that the dma_map routines now