pmem, dax: disable dax in the presence of bad blocks (57f7f317) · Commits · 戴 / test

block/ioctl.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -4,6 +4,7 @@
		#include <linux/gfp.h>
		#include <linux/blkpg.h>
		#include <linux/hdreg.h>
		#include <linux/badblocks.h>
		#include <linux/backing-dev.h>
		#include <linux/fs.h>
		#include <linux/blktrace_api.h>
		@@ -422,6 +423,15 @@ bool blkdev_dax_capable(struct block_device *bdev)
		\|\| (bdev->bd_part->nr_sects % (PAGE_SIZE / 512)))
		return false;

		/*
		* If the device has known bad blocks, force all I/O through the
		* driver / page cache.
		*
		* TODO: support finer grained dax error handling
		*/
		if (disk->bb && disk->bb->count)
		return false;

		return true;
		}

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);