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Revert "libnvdimm: band aid btt vs clear poison locking" 

This reverts commit 4aa5615e08 "libnvdimm: band aid btt vs clear
poison locking".

Now that poison list locking has been converted to a spinlock and poison
list entry allocation during i/o has been converted to GFP_NOWAIT,
revert the band-aid that disabled error clearing from btt i/o.

Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2017-04-13 14:37:39 -07:00
parent b3b454f694
commit e88da7998d
1 changed files with 1 additions and 9 deletions
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10
drivers/nvdimm/claim.c
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@ -243,15 +243,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
}
if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) {
/*
* FIXME: nsio_rw_bytes() may be called from atomic
* context in the btt case and nvdimm_clear_poison()
* takes a sleeping lock. Until the locking can be
* reworked this capability requires that the namespace
* is not claimed by btt.
*/
if (IS_ALIGNED(offset, 512) && IS_ALIGNED(size, 512)
&& (!ndns->claim || !is_nd_btt(ndns->claim))) {
if (IS_ALIGNED(offset, 512) && IS_ALIGNED(size, 512)) {
long cleared;
cleared = nvdimm_clear_poison(&ndns->dev, offset, size);