lightnvm: disable interleaved metadata
authorIgor Konopko <igor.j.konopko@intel.com>
Tue, 11 Dec 2018 19:16:25 +0000 (20:16 +0100)
committerJens Axboe <axboe@kernel.dk>
Tue, 11 Dec 2018 19:22:35 +0000 (12:22 -0700)
commita16816b9e462e8ee86a908606bde54b53cfeca80
tree3708bab87ed721388fec3e349f8e33b8fb26eb5b
parent24828d0536bbedc9b265f2b01ffca99de3f6a7c7
lightnvm: disable interleaved metadata

Currently pblk only check the size of I/O metadata and does not take
into account if this metadata is in a separate buffer or interleaved
in a single metadata buffer.

In reality only the first scenario is supported, where second mode will
break pblk functionality during any IO operation.

This patch prevents pblk to be instantiated in case device only
supports interleaved metadata.

Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/lightnvm/pblk-init.c
drivers/nvme/host/lightnvm.c
include/linux/lightnvm.h