Merge branch 'linux-4.4' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into...

[firefly-linux-kernel-4.4.55.git] / drivers / nvdimm / pmem.c

diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 0ba6a978f227e76a4b0c27046e2736d43cf37e45..8ee79893d2f5f6f5165558baa22f236738b99c45 100644 (file)
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -64,7 +64,7 @@ static void pmem_do_bvec(struct pmem_device *pmem, struct page *page,
        kunmap_atomic(mem);
 }
 
-static void pmem_make_request(struct request_queue *q, struct bio *bio)
+static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
 {
        bool do_acct;
        unsigned long start;
@@ -84,6 +84,7 @@ static void pmem_make_request(struct request_queue *q, struct bio *bio)
                wmb_pmem();
 
        bio_endio(bio);
+       return BLK_QC_T_NONE;
 }
 
 static int pmem_rw_page(struct block_device *bdev, sector_t sector,
@@ -104,22 +105,11 @@ static long pmem_direct_access(struct block_device *bdev, sector_t sector,
 {
        struct pmem_device *pmem = bdev->bd_disk->private_data;
        resource_size_t offset = sector * 512 + pmem->data_offset;
-       resource_size_t size;
-
-       if (pmem->data_offset) {
-               /*
-                * Limit the direct_access() size to what is covered by
-                * the memmap
-                */
-               size = (pmem->size - offset) & ~ND_PFN_MASK;
-       } else
-               size = pmem->size - offset;
-
-       /* FIXME convert DAX to comprehend that this mapping has a lifetime */
+
        *kaddr = pmem->virt_addr + offset;
        *pfn = (pmem->phys_addr + offset) >> PAGE_SHIFT;
 
-       return size;
+       return pmem->size - offset;
 }
 
 static const struct block_device_operations pmem_fops = {
@@ -150,18 +140,15 @@ static struct pmem_device *pmem_alloc(struct device *dev,
                return ERR_PTR(-EBUSY);
        }
 
-       if (pmem_should_map_pages(dev)) {
-               void *addr = devm_memremap_pages(dev, res);
+       if (pmem_should_map_pages(dev))
+               pmem->virt_addr = (void __pmem *) devm_memremap_pages(dev, res);
+       else
+               pmem->virt_addr = (void __pmem *) devm_memremap(dev,
+                               pmem->phys_addr, pmem->size,
+                               ARCH_MEMREMAP_PMEM);
 
-               if (IS_ERR(addr))
-                       return addr;
-               pmem->virt_addr = (void __pmem *) addr;
-       } else {
-               pmem->virt_addr = memremap_pmem(dev, pmem->phys_addr,
-                               pmem->size);
-               if (!pmem->virt_addr)
-                       return ERR_PTR(-ENXIO);
-       }
+       if (IS_ERR(pmem->virt_addr))
+               return (void __force *) pmem->virt_addr;
 
        return pmem;
 }
@@ -179,9 +166,10 @@ static void pmem_detach_disk(struct pmem_device *pmem)
 static int pmem_attach_disk(struct device *dev,
                struct nd_namespace_common *ndns, struct pmem_device *pmem)
 {
+       int nid = dev_to_node(dev);
        struct gendisk *disk;
 
-       pmem->pmem_queue = blk_alloc_queue(GFP_KERNEL);
+       pmem->pmem_queue = blk_alloc_queue_node(GFP_KERNEL, nid);
        if (!pmem->pmem_queue)
                return -ENOMEM;
 
@@ -191,7 +179,7 @@ static int pmem_attach_disk(struct device *dev,
        blk_queue_bounce_limit(pmem->pmem_queue, BLK_BOUNCE_ANY);
        queue_flag_set_unlocked(QUEUE_FLAG_NONROT, pmem->pmem_queue);
 
-       disk = alloc_disk(0);
+       disk = alloc_disk_node(0, nid);
        if (!disk) {
                blk_cleanup_queue(pmem->pmem_queue);
                return -ENOMEM;
@@ -363,8 +351,8 @@ static int nvdimm_namespace_attach_pfn(struct nd_namespace_common *ndns)
 
        /* establish pfn range for lookup, and switch to direct map */
        pmem = dev_get_drvdata(dev);
-       memunmap_pmem(dev, pmem->virt_addr);
-       pmem->virt_addr = (void __pmem *)devm_memremap_pages(dev, &nsio->res);
+       devm_memunmap(dev, (void __force *) pmem->virt_addr);
+       pmem->virt_addr = (void __pmem *) devm_memremap_pages(dev, &nsio->res);
        if (IS_ERR(pmem->virt_addr)) {
                rc = PTR_ERR(pmem->virt_addr);
                goto err;