Rob N 8f1b7a6fa6 vdev_disk: disable flushes if device does not support it ... If the underlying device doesn't have a write-back cache, the kernel will just return a successful response. This doesn't hurt anything, but it's extra work on the IO taskqs that are unnecessary. So, detect this when we open the device for the first time. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Closes #16148		2024-05-02 15:18:35 -07:00
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spl	xdr: header cleanup	2024-04-03 15:13:27 -07:00
zfs	vdev_disk: disable flushes if device does not support it	2024-05-02 15:18:35 -07:00