diff options
| -rw-r--r-- | drivers/nvdimm/btt_devs.c | 4 | ||||
| -rw-r--r-- | drivers/nvdimm/pfn_devs.c | 4 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 2 | ||||
| -rw-r--r-- | fs/block_dev.c | 7 | ||||
| -rw-r--r-- | fs/dax.c | 3 | ||||
| -rw-r--r-- | include/asm-generic/memory_model.h | 2 |
6 files changed, 16 insertions, 6 deletions
diff --git a/drivers/nvdimm/btt_devs.c b/drivers/nvdimm/btt_devs.c index 59ad54a63d9f..cb477518dd0e 100644 --- a/drivers/nvdimm/btt_devs.c +++ b/drivers/nvdimm/btt_devs.c @@ -128,13 +128,13 @@ static ssize_t namespace_store(struct device *dev, struct nd_btt *nd_btt = to_nd_btt(dev); ssize_t rc; - nvdimm_bus_lock(dev); device_lock(dev); + nvdimm_bus_lock(dev); rc = nd_namespace_store(dev, &nd_btt->ndns, buf, len); dev_dbg(dev, "%s: result: %zd wrote: %s%s", __func__, rc, buf, buf[len - 1] == '\n' ? "" : "\n"); - device_unlock(dev); nvdimm_bus_unlock(dev); + device_unlock(dev); return rc; } diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c index 3fd7d0d81a47..71805a1aa0f3 100644 --- a/drivers/nvdimm/pfn_devs.c +++ b/drivers/nvdimm/pfn_devs.c @@ -148,13 +148,13 @@ static ssize_t namespace_store(struct device *dev, struct nd_pfn *nd_pfn = to_nd_pfn(dev); ssize_t rc; - nvdimm_bus_lock(dev); device_lock(dev); + nvdimm_bus_lock(dev); rc = nd_namespace_store(dev, &nd_pfn->ndns, buf, len); dev_dbg(dev, "%s: result: %zd wrote: %s%s", __func__, rc, buf, buf[len - 1] == '\n' ? "" : "\n"); - device_unlock(dev); nvdimm_bus_unlock(dev); + device_unlock(dev); return rc; } diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index b9525385c0dc..0ba6a978f227 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -92,6 +92,8 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector, struct pmem_device *pmem = bdev->bd_disk->private_data; pmem_do_bvec(pmem, page, PAGE_CACHE_SIZE, 0, rw, sector); + if (rw & WRITE) + wmb_pmem(); page_endio(page, rw & WRITE, 0); return 0; diff --git a/fs/block_dev.c b/fs/block_dev.c index 22ea424ee741..073bb57adab1 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1242,6 +1242,13 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) goto out_clear; } bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9); + /* + * If the partition is not aligned on a page + * boundary, we can't do dax I/O to it. + */ + if ((bdev->bd_part->start_sect % (PAGE_SIZE / 512)) || + (bdev->bd_part->nr_sects % (PAGE_SIZE / 512))) + bdev->bd_inode->i_flags &= ~S_DAX; } } else { if (bdev->bd_contains == bdev) { @@ -119,7 +119,8 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter, size_t len; if (pos == max) { unsigned blkbits = inode->i_blkbits; - sector_t block = pos >> blkbits; + long page = pos >> PAGE_SHIFT; + sector_t block = page << (PAGE_SHIFT - blkbits); unsigned first = pos - (block << blkbits); long size; diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h index f20f407ce45d..4b4b056a6eb0 100644 --- a/include/asm-generic/memory_model.h +++ b/include/asm-generic/memory_model.h @@ -73,7 +73,7 @@ * Convert a physical address to a Page Frame Number and back */ #define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) -#define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) +#define __pfn_to_phys(pfn) PFN_PHYS(pfn) #define page_to_pfn __page_to_pfn #define pfn_to_page __pfn_to_page |