Commit 89fd915c authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'libnvdimm-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm 

Pull libnvdimm from Dan Williams:
 "A rework of media error handling in the BTT driver and other updates.
  It has appeared in a few -next releases and collected some late-
  breaking build-error and warning fixups as a result.

  Summary:

   - Media error handling support in the Block Translation Table (BTT)
     driver is reworked to address sleeping-while-atomic locking and
     memory-allocation-context conflicts.

   - The dax_device lookup overhead for xfs and ext4 is moved out of the
     iomap hot-path to a mount-time lookup.

   - A new 'ecc_unit_size' sysfs attribute is added to advertise the
     read-modify-write boundary property of a persistent memory range.

   - Preparatory fix-ups for arm and powerpc pmem support are included
     along with other miscellaneous fixes"

* tag 'libnvdimm-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (26 commits)
  libnvdimm, btt: fix format string warnings
  libnvdimm, btt: clean up warning and error messages
  ext4: fix null pointer dereference on sbi
  libnvdimm, nfit: move the check on nd_reserved2 to the endpoint
  dax: fix FS_DAX=n BLOCK=y compilation
  libnvdimm: fix integer overflow static analysis warning
  libnvdimm, nd_blk: remove mmio_flush_range()
  libnvdimm, btt: rework error clearing
  libnvdimm: fix potential deadlock while clearing errors
  libnvdimm, btt: cache sector_size in arena_info
  libnvdimm, btt: ensure that flags were also unchanged during a map_read
  libnvdimm, btt: refactor map entry operations with macros
  libnvdimm, btt: fix a missed NVDIMM_IO_ATOMIC case in the write path
  libnvdimm, nfit: export an 'ecc_unit_size' sysfs attribute
  ext4: perform dax_device lookup at mount
  ext2: perform dax_device lookup at mount
  xfs: perform dax_device lookup at mount
  dax: introduce a fs_dax_get_by_bdev() helper
  libnvdimm, btt: check memory allocation failure
  libnvdimm, label: fix index block size calculation
  ...
parents 66c9457d 04c3c982

arch/x86/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -53,7 +53,6 @@ config X86 
	select ARCH_HAS_FORTIFY_SOURCE

	select ARCH_HAS_GCOV_PROFILE_ALL

	select ARCH_HAS_KCOV			if X86_64

	select ARCH_HAS_MMIO_FLUSH

	select ARCH_HAS_PMEM_API		if X86_64

	# Causing hangs/crashes, see the commit that added this change for details.

	select ARCH_HAS_REFCOUNT		if BROKEN

arch/x86/include/asm/cacheflush.h

+0 −2
Original line number Diff line number Diff line
@@ -7,6 +7,4 @@ 


void clflush_cache_range(void *addr, unsigned int size);



#define mmio_flush_range(addr, size) clflush_cache_range(addr, size)



#endif /* _ASM_X86_CACHEFLUSH_H */

drivers/acpi/nfit/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ config ACPI_NFIT 
	tristate "ACPI NVDIMM Firmware Interface Table (NFIT)"

	depends on PHYS_ADDR_T_64BIT

	depends on BLK_DEV

	depends on ARCH_HAS_MMIO_FLUSH

	depends on ARCH_HAS_PMEM_API

	select LIBNVDIMM

	help

	  Infrastructure to probe ACPI 6 compliant platforms for

drivers/acpi/nfit/core.c

+44 −6
Original line number Diff line number Diff line
@@ -228,6 +228,10 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm, 
	if (cmd == ND_CMD_CALL) {

		call_pkg = buf;

		func = call_pkg->nd_command;



		for (i = 0; i < ARRAY_SIZE(call_pkg->nd_reserved2); i++)

			if (call_pkg->nd_reserved2[i])

				return -EINVAL;

	}



	if (nvdimm) {
@@ -1674,8 +1678,19 @@ static ssize_t range_index_show(struct device *dev, 
}

static DEVICE_ATTR_RO(range_index);



static ssize_t ecc_unit_size_show(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	struct nd_region *nd_region = to_nd_region(dev);

	struct nfit_spa *nfit_spa = nd_region_provider_data(nd_region);



	return sprintf(buf, "%d\n", nfit_spa->clear_err_unit);

}

static DEVICE_ATTR_RO(ecc_unit_size);



static struct attribute *acpi_nfit_region_attributes[] = {

	&dev_attr_range_index.attr,

	&dev_attr_ecc_unit_size.attr,

	NULL,

};
@@ -1804,6 +1819,7 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, 
		struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);

		struct acpi_nfit_memory_map *memdev = memdev_from_spa(acpi_desc,

				spa->range_index, i);

		struct acpi_nfit_control_region *dcr = nfit_mem->dcr;



		if (!memdev || !nfit_mem->dcr) {

			dev_err(dev, "%s: failed to find DCR\n", __func__);
@@ -1811,13 +1827,13 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, 
		}



		map->region_offset = memdev->region_offset;

		map->serial_number = nfit_mem->dcr->serial_number;

		map->serial_number = dcr->serial_number;



		map2->region_offset = memdev->region_offset;

		map2->serial_number = nfit_mem->dcr->serial_number;

		map2->vendor_id = nfit_mem->dcr->vendor_id;

		map2->manufacturing_date = nfit_mem->dcr->manufacturing_date;

		map2->manufacturing_location = nfit_mem->dcr->manufacturing_location;

		map2->serial_number = dcr->serial_number;

		map2->vendor_id = dcr->vendor_id;

		map2->manufacturing_date = dcr->manufacturing_date;

		map2->manufacturing_location = dcr->manufacturing_location;

	}



	/* v1.1 namespaces */
@@ -1835,6 +1851,28 @@ static int acpi_nfit_init_interleave_set(struct acpi_nfit_desc *acpi_desc, 
			cmp_map_compat, NULL);

	nd_set->altcookie = nd_fletcher64(info, sizeof_nfit_set_info(nr), 0);



	/* record the result of the sort for the mapping position */

	for (i = 0; i < nr; i++) {

		struct nfit_set_info_map2 *map2 = &info2->mapping[i];

		int j;



		for (j = 0; j < nr; j++) {

			struct nd_mapping_desc *mapping = &ndr_desc->mapping[j];

			struct nvdimm *nvdimm = mapping->nvdimm;

			struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);

			struct acpi_nfit_control_region *dcr = nfit_mem->dcr;



			if (map2->serial_number == dcr->serial_number &&

			    map2->vendor_id == dcr->vendor_id &&

			    map2->manufacturing_date == dcr->manufacturing_date &&

			    map2->manufacturing_location

				    == dcr->manufacturing_location) {

				mapping->position = i;

				break;

			}

		}

	}



	ndr_desc->nd_set = nd_set;

	devm_kfree(dev, info);

	devm_kfree(dev, info2);
@@ -1930,7 +1968,7 @@ static int acpi_nfit_blk_single_io(struct nfit_blk *nfit_blk, 
			memcpy_flushcache(mmio->addr.aperture + offset, iobuf + copied, c);

		else {

			if (nfit_blk->dimm_flags & NFIT_BLK_READ_FLUSH)

				mmio_flush_range((void __force *)

				arch_invalidate_pmem((void __force *)

					mmio->addr.aperture + offset, c);



			memcpy(iobuf + copied, mmio->addr.aperture + offset, c);

drivers/dax/super.c

+12 −0
Original line number Diff line number Diff line
@@ -46,6 +46,8 @@ void dax_read_unlock(int id) 
EXPORT_SYMBOL_GPL(dax_read_unlock);



#ifdef CONFIG_BLOCK

#include <linux/blkdev.h>



int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size,

		pgoff_t *pgoff)

{
@@ -59,6 +61,16 @@ int bdev_dax_pgoff(struct block_device *bdev, sector_t sector, size_t size, 
}

EXPORT_SYMBOL(bdev_dax_pgoff);



#if IS_ENABLED(CONFIG_FS_DAX)

struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev)

{

	if (!blk_queue_dax(bdev->bd_queue))

		return NULL;

	return fs_dax_get_by_host(bdev->bd_disk->disk_name);

}

EXPORT_SYMBOL_GPL(fs_dax_get_by_bdev);

#endif



/**

 * __bdev_dax_supported() - Check if the device supports dax for filesystem

 * @sb: The superblock of the device

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