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dm: make EBS depend on !HIGHMEM

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__ebs_rw_bvec use page_address on the submitted bios data, and thus
can't deal with highmem.  Disable the target on highmem configs.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210804095634.460779-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-08-04 11:56:22 +02:00 committed by Jens Axboe
parent b93ef45350
commit 1c277e5013
1 changed files with 1 additions and 1 deletions
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2
drivers/md/Kconfig
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@ -342,7 +342,7 @@ config DM_WRITECACHE
config DM_EBS
tristate "Emulated block size target (EXPERIMENTAL)"
depends on BLK_DEV_DM
depends on BLK_DEV_DM && !HIGHMEM
select DM_BUFIO
help
dm-ebs emulates smaller logical block size on backing devices