Commit 4557641b authored Jun 26, 2018 by Ross Zwisler Committed by Mike Snitzer Jun 28, 2018

pmem: only set QUEUE_FLAG_DAX for fsdax mode



QUEUE_FLAG_DAX is an indication that a given block device supports
filesystem DAX and should not be set for PMEM namespaces which are in "raw"
mode.  These namespaces lack struct page and are prevented from
participating in filesystem DAX as of commit 569d0365 ("dax: require
'struct page' by default for filesystem dax").

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Suggested-by: Mike Snitzer <snitzer@redhat.com>
Fixes: 569d0365 ("dax: require 'struct page' by default for filesystem dax")
Cc: stable@vger.kernel.org
Acked-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent a685557f

drivers/nvdimm/pmem.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -414,6 +414,7 @@ static int pmem_attach_disk(struct device *dev,
		blk_queue_logical_block_size(q, pmem_sector_size(ndns));
		blk_queue_max_hw_sectors(q, UINT_MAX);
		blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
		if (pmem->pfn_flags & PFN_MAP)
		blk_queue_flag_set(QUEUE_FLAG_DAX, q);
		q->queuedata = pmem;

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