dm: add emulated block size target
This new target is similar to the linear target except that it emulates a smaller logical block size on a device with a larger logical block size. Its main purpose is to emulate 512 byte sectors on 4K native disks (i.e. 512e). See Documentation/admin-guide/device-mapper/dm-ebs.rst for details. Reviewed-by:Damien Le Moal <DamienLeMoal@wdc.com> Signed-off-by:
Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> [Kconfig fixes] Signed-off-by: Zheng Bin <zhengbin13@huawei.com> [static fixes] Signed-off-by:
Mike Snitzer <snitzer@redhat.com>
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drivers/md/dm-ebs-target.c
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