Thread (104 messages) 104 messages, 9 authors, 2024-06-17

Re: [PATCH 16/26] block: move the io_stat flag setting to queue_limits

From: Damien Le Moal <dlemoal@kernel.org>
Date: 2024-06-11 08:09:52
Also in: ceph-devel, dm-devel, linux-bcache, linux-block, linux-m68k, linux-mmc, linux-nvme, linux-raid, linux-s390, linux-scsi, linux-um, nvdimm, virtualization, xen-devel

On 6/11/24 2:19 PM, Christoph Hellwig wrote:
Move the io_stat flag into the queue_limits feature field so that it
can be set atomically and all I/O is frozen when changing the flag.
Why a feature ? It seems more appropriate for io_stat to be a flag rather than
a feature as that is a block layer thing rather than a device characteristic, no ?
Simplify md and dm to set the flag unconditionally instead of avoiding
setting a simple flag for cases where it already is set by other means,
which is a bit pointless.

Signed-off-by: Christoph Hellwig <hch@lst.de>
-- 
Damien Le Moal
Western Digital Research
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