Files
linux/drivers/md
Yu Kuai 9057309267 md/raid5: validate discard support at request time
Raid5 used to disable discard limits when devices_handle_discard_safely
was not set or when stacked member limits could not support a full-stripe
discard. That hides discard from userspace before raid5 can decide whether
a request can be handled safely.

Follow other virtual drivers and advertise a UINT_MAX discard limit for the
md device. Cache lower discard support in r5conf when setting queue limits,
and reject unsupported discard bios before queuing stripe work.

Link: https://patch.msgid.link/20260605072639.2434847-3-yukuai@kernel.org
Signed-off-by: Yu Kuai <yukuai@fygo.io>
2026-06-21 03:16:24 +08:00
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