diff options
Diffstat (limited to 'drivers/nvdimm/claim.c')
| -rw-r--r-- | drivers/nvdimm/claim.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c index 35b210dc1e56..6945e35058bf 100644 --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -250,7 +250,16 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns, } if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) { - if (IS_ALIGNED(offset, 512) && IS_ALIGNED(size, 512)) { + /* + * FIXME: nsio_rw_bytes() may be called from atomic + * context in the btt case and the ACPI DSM path for + * clearing the error takes sleeping locks and allocates + * memory. An explicit error clearing path, and support + * for tracking badblocks in BTT metadata is needed to + * work around this collision. + */ + if (IS_ALIGNED(offset, 512) && IS_ALIGNED(size, 512) + && (!ndns->claim || !is_nd_btt(ndns->claim))) { long cleared; cleared = nvdimm_clear_poison(&ndns->dev, |