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pmem, dax: disable dax in the presence of bad blocks

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Longer term teach dax to punch "error" holes in mapping requests and
deliver SIGBUS to applications that consume a bad pmem page.  For now,
simply disable the dax performance optimization in the presence of known
errors.

Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Dan Williams 2016-01-06 12:03:42 -08:00
commit 57f7f317ab
2 changed files with 11 additions and 0 deletions
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1
drivers/nvdimm/pmem.c
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@ -233,6 +233,7 @@ static int pmem_attach_disk(struct device *dev,
return -ENOMEM;
nvdimm_namespace_add_poison(ndns, &pmem->bb, pmem->data_offset);
disk->bb = &pmem->bb;
add_disk(disk);
revalidate_disk(disk);