dm: allow targets to require splitting WRITE_ZEROES and SECURE_ERASE

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Introduce max_write_zeroes_granularity and
max_secure_erase_granularity flags in the dm_target struct.

If a target sets these then DM core will split IO of these operation
types accordingly (in terms of max_write_zeroes_sectors and
max_secure_erase_sectors respectively).

Signed-off-by: Mike Snitzer <snitzer@kernel.org>

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This commit is contained in:

Mike Snitzer 2023-04-14 12:07:27 -04:00

parent 3664ff82da

commit 13f6facf3f

2 changed files with 20 additions and 6 deletions

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10

drivers/md/dm.c

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16

include/linux/device-mapper.h

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