John,
> As reported in [0], we may get a hang when formatting a XFS FS on a RAID0
> drive.
>
> Commit 73a768d5f955 ("block: factor out a blk_write_zeroes_limit helper")
> changed __blkdev_issue_write_zeroes() to read the max write zeroes
> value in the loop. This is not safe as max write zeroes may change in
> value. Specifically for the case of [0], the value goes to 0, and we get
> an infinite loop.
>
> Lift the limit reading out of the loop.
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
--
Martin K. Petersen Oracle Linux Engineering
