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SubjectRe: [PATCH 4/5] block: move queue enter logic into blk_mq_submit_bio()
 	Hi Jens,

On Thu, 4 Nov 2021, Jens Axboe wrote:
> On 11/4/21 1:04 PM, Christoph Hellwig wrote:
>> On Thu, Nov 04, 2021 at 01:02:54PM -0600, Jens Axboe wrote:
>>> On 11/4/21 12:52 PM, Christoph Hellwig wrote:
>>>> Looks good:
>>>>
>>>> Reviewed-by: Christoph Hellwig <hch@lst.de>
>>>
>>> So these two are now:
>>>
>>> https://git.kernel.dk/cgit/linux-block/commit/?h=for-5.16/block&id=c98cb5bbdab10d187aff9b4e386210eb2332af96
>>>
>>> which is the one I sent here, and then the next one gets cleaned up to
>>> remove that queue enter helper:
>>>
>>> https://git.kernel.dk/cgit/linux-block/commit/?h=for-5.16/block&id=7f930eb31eeb07f1b606b3316d8ad3ab6a92905b
>>>
>>> Can I add your reviewed-by to this last one as well? Only change is the
>>> removal of blk_mq_enter_queue() and the weird construct there, it's just
>>> bio_queue_enter() now.
>>
>> Sure.
>
> Thanks, prematurely already done, as you could tell :-)

The updated version is now commit 900e080752025f00 ("block: move queue
enter logic into blk_mq_submit_bio()") in Linus' tree.

I have bisected failures on m68k/atari (on ARAnyM, using nfhd as the
root device) to this commit, e.g.:

sd 0:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current]
sd 0:0:0:0: [sda] tag#0 Add. Sense: Invalid field in cdb
sd 0:0:0:0: [sda] tag#0 CDB: Write(10) 2a 08 00 00 00 01 00 00 08 00
critical target error, dev sda, sector 1 op 0x1:(WRITE) flags 0x20800 phys_seg 1 prio class 0
Buffer I/O error on dev sda1, logical block 0, lost sync page write

EXT4-fs (sda1): I/O error while writing superblock
sd 0:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:0:0: [sda] tag#0 Sense Key : Illegal Request [current]
sd 0:0:0:0: [sda] tag#0 Add. Sense: Invalid field in cdb
sd 0:0:0:0: [sda] tag#0 CDB: Write(10) 2a 08 00 00 00 01 00 00 08 00
critical target error, dev sda, sector 1 op 0x1:(WRITE) flags 0x20800 phys_seg 1 prio class 0
Buffer I/O error on dev sda1, logical block 0, lost sync page write
EXT4-fs (sda1): I/O error while writing superblock

This may happen either when mounting the root file system (leading to an
unable to mount root fs panic), or later (leading to a read-only
rootfs).

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

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