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authorDan Williams <dan.j.williams@intel.com>2015-10-21 13:20:29 -0400
committerJens Axboe <axboe@fb.com>2015-10-21 14:43:45 -0600
commit4125a09b0a0d579ebace17f0e62b03ab9d5ab2f4 (patch)
treed2e073b3985850b1ea2a8e7ba9a414a6427f463f /drivers/nvdimm/core.c
parent5a48fc147d7f2718a5c7e73bc8c4067235791fc1 (diff)
downloadlinux-4125a09b0a0d579ebace17f0e62b03ab9d5ab2f4.tar.bz2
block, libnvdimm, nvme: provide a built-in blk_integrity nop profile
The libnvidmm-btt and nvme drivers use blk_integrity to reserve space for per-sector metadata, but sometimes without protection checksums. This property is generically useful, so teach the block core to internally specify a nop profile if one is not provided at registration time. Cc: Keith Busch <keith.busch@intel.com> Cc: Matthew Wilcox <willy@linux.intel.com> Suggested-by: Christoph Hellwig <hch@lst.de> [hch: kill the local nvme nop profile as well] Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/nvdimm/core.c')
-rw-r--r--drivers/nvdimm/core.c12
1 files changed, 1 insertions, 11 deletions
diff --git a/drivers/nvdimm/core.c b/drivers/nvdimm/core.c
index e85848caf8d2..82c49bb87055 100644
--- a/drivers/nvdimm/core.c
+++ b/drivers/nvdimm/core.c
@@ -392,24 +392,14 @@ void nvdimm_bus_unregister(struct nvdimm_bus *nvdimm_bus)
EXPORT_SYMBOL_GPL(nvdimm_bus_unregister);
#ifdef CONFIG_BLK_DEV_INTEGRITY
-static int nd_pi_nop_generate_verify(struct blk_integrity_iter *iter)
-{
- return 0;
-}
-
int nd_integrity_init(struct gendisk *disk, unsigned long meta_size)
{
struct blk_integrity bi;
- static struct blk_integrity_profile profile = {
- .name = "ND-PI-NOP",
- .generate_fn = nd_pi_nop_generate_verify,
- .verify_fn = nd_pi_nop_generate_verify,
- };
if (meta_size == 0)
return 0;
- bi.profile = &profile;
+ bi.profile = NULL;
bi.tuple_size = meta_size;
bi.tag_size = meta_size;