diff options
Diffstat (limited to 'drivers/nvdimm/region_devs.c')
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index 4fed9ce9c2fe..af30cbe7a8ea 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -287,7 +287,9 @@ static ssize_t deep_flush_store(struct device *dev, struct device_attribute *att return rc; if (!flush) return -EINVAL; - nvdimm_flush(nd_region); + rc = nvdimm_flush(nd_region, NULL); + if (rc) + return rc; return len; } @@ -329,7 +331,7 @@ static ssize_t set_cookie_show(struct device *dev, * the v1.1 namespace label cookie definition. To read all this * data we need to wait for probing to settle. */ - device_lock(dev); + nd_device_lock(dev); nvdimm_bus_lock(dev); wait_nvdimm_bus_probe_idle(dev); if (nd_region->ndr_mappings) { @@ -346,7 +348,7 @@ static ssize_t set_cookie_show(struct device *dev, } } nvdimm_bus_unlock(dev); - device_unlock(dev); + nd_device_unlock(dev); if (rc) return rc; @@ -422,10 +424,12 @@ static ssize_t available_size_show(struct device *dev, * memory nvdimm_bus_lock() is dropped, but that's userspace's * problem to not race itself. */ + nd_device_lock(dev); nvdimm_bus_lock(dev); wait_nvdimm_bus_probe_idle(dev); available = nd_region_available_dpa(nd_region); nvdimm_bus_unlock(dev); + nd_device_unlock(dev); return sprintf(buf, "%llu\n", available); } @@ -437,10 +441,12 @@ static ssize_t max_available_extent_show(struct device *dev, struct nd_region *nd_region = to_nd_region(dev); unsigned long long available = 0; + nd_device_lock(dev); nvdimm_bus_lock(dev); wait_nvdimm_bus_probe_idle(dev); available = nd_region_allocatable_dpa(nd_region); nvdimm_bus_unlock(dev); + nd_device_unlock(dev); return sprintf(buf, "%llu\n", available); } @@ -559,12 +565,12 @@ static ssize_t region_badblocks_show(struct device *dev, struct nd_region *nd_region = to_nd_region(dev); ssize_t rc; - device_lock(dev); + nd_device_lock(dev); if (dev->driver) rc = badblocks_show(&nd_region->bb, buf, 0); else rc = -ENXIO; - device_unlock(dev); + nd_device_unlock(dev); return rc; } @@ -1077,6 +1083,11 @@ static struct nd_region *nd_region_create(struct nvdimm_bus *nvdimm_bus, dev->of_node = ndr_desc->of_node; nd_region->ndr_size = resource_size(ndr_desc->res); nd_region->ndr_start = ndr_desc->res->start; + if (ndr_desc->flush) + nd_region->flush = ndr_desc->flush; + else + nd_region->flush = NULL; + nd_device_register(dev); return nd_region; @@ -1117,11 +1128,24 @@ struct nd_region *nvdimm_volatile_region_create(struct nvdimm_bus *nvdimm_bus, } EXPORT_SYMBOL_GPL(nvdimm_volatile_region_create); +int nvdimm_flush(struct nd_region *nd_region, struct bio *bio) +{ + int rc = 0; + + if (!nd_region->flush) + rc = generic_nvdimm_flush(nd_region); + else { + if (nd_region->flush(nd_region, bio)) + rc = -EIO; + } + + return rc; +} /** * nvdimm_flush - flush any posted write queues between the cpu and pmem media * @nd_region: blk or interleaved pmem region */ -void nvdimm_flush(struct nd_region *nd_region) +int generic_nvdimm_flush(struct nd_region *nd_region) { struct nd_region_data *ndrd = dev_get_drvdata(&nd_region->dev); int i, idx; @@ -1145,6 +1169,8 @@ void nvdimm_flush(struct nd_region *nd_region) if (ndrd_get_flush_wpq(ndrd, i, 0)) writeq(1, ndrd_get_flush_wpq(ndrd, i, idx)); wmb(); + + return 0; } EXPORT_SYMBOL_GPL(nvdimm_flush); @@ -1189,6 +1215,13 @@ int nvdimm_has_cache(struct nd_region *nd_region) } EXPORT_SYMBOL_GPL(nvdimm_has_cache); +bool is_nvdimm_sync(struct nd_region *nd_region) +{ + return is_nd_pmem(&nd_region->dev) && + !test_bit(ND_REGION_ASYNC, &nd_region->flags); +} +EXPORT_SYMBOL_GPL(is_nvdimm_sync); + struct conflict_context { struct nd_region *nd_region; resource_size_t start, size; |
