From: Dan Williams Date: Thu, 13 Apr 2017 21:37:39 +0000 (-0700) Subject: Revert "libnvdimm: band aid btt vs clear poison locking" X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e88da7998d7dc7b40dbe3ac85d9a5d6f91cc2d13;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git Revert "libnvdimm: band aid btt vs clear poison locking" This reverts commit 4aa5615e080a "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 Cc: Dave Jiang Signed-off-by: Dan Williams --- diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c index ca6d572c48fc..b3323c0697f6 100644 --- a/drivers/nvdimm/claim.c +++ b/drivers/nvdimm/claim.c @@ -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);