Re: sd_setup_discard_cmnd: BUG: unable to handle kernel NULL pointer dereference at (null)

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>>>>> "Lars" == Lars Ellenberg <lars.ellenberg@xxxxxxxxxx> writes:

Lars,

Thanks for fixing this. 

I'd still like to see you use the lib call instead like you do for
zeroout. I have some patches in the pipeline for multi-range discard
support and things are going to break for drbd if you manually roll
bios.

Lars> linux upstream DRBD also does blk_queue_max_write_same_sectors(q,
Lars> 0) and blk_queue_max_discard_sectors(q, DRBD_MAX_DISCARD_SECTORS)

Great!

-- 
Martin K. Petersen	Oracle Linux Engineering
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