diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2017-04-07 15:33:31 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-12 21:56:43 -0700 |
| commit | 006358b35c73ab75544fb4509483a81ef1a9c0b2 (patch) | |
| tree | 9f0ac88e27f376ba6b714763def8837167518acd /drivers/nvdimm/core.c | |
| parent | 802f4be6feee3f0395c26ac9717da5b15f6b8fec (diff) | |
libnvdimm: add support for clear poison list and badblocks for device dax
Providing mechanism to clear poison list via the ndctl ND_CMD_CLEAR_ERROR
call. We will update the poison list and also the badblocks at region level
if the region is in dax mode or in pmem mode and not active. In other
words we force badblocks to be cleared through write requests if the
address is currently accessed through a block device, otherwise it can
only be done via the ioctl+dsm path.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/core.c')
| -rw-r--r-- | drivers/nvdimm/core.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/nvdimm/core.c b/drivers/nvdimm/core.c index 9303cfeb8bee..40a3da088fd2 100644 --- a/drivers/nvdimm/core.c +++ b/drivers/nvdimm/core.c @@ -574,14 +574,15 @@ int nvdimm_bus_add_poison(struct nvdimm_bus *nvdimm_bus, u64 addr, u64 length) } EXPORT_SYMBOL_GPL(nvdimm_bus_add_poison); -void nvdimm_clear_from_poison_list(struct nvdimm_bus *nvdimm_bus, - phys_addr_t start, unsigned int len) +void __nvdimm_forget_poison(struct nvdimm_bus *nvdimm_bus, phys_addr_t start, + unsigned int len) { struct list_head *poison_list = &nvdimm_bus->poison_list; u64 clr_end = start + len - 1; struct nd_poison *pl, *next; - nvdimm_bus_lock(&nvdimm_bus->dev); + lockdep_assert_held(&nvdimm_bus->reconfig_mutex); + WARN_ON_ONCE(list_empty(poison_list)); /* @@ -634,9 +635,17 @@ void nvdimm_clear_from_poison_list(struct nvdimm_bus *nvdimm_bus, continue; } } +} +EXPORT_SYMBOL_GPL(__nvdimm_forget_poison); + +void nvdimm_forget_poison(struct nvdimm_bus *nvdimm_bus, + phys_addr_t start, unsigned int len) +{ + nvdimm_bus_lock(&nvdimm_bus->dev); + __nvdimm_forget_poison(nvdimm_bus, start, len); nvdimm_bus_unlock(&nvdimm_bus->dev); } -EXPORT_SYMBOL_GPL(nvdimm_clear_from_poison_list); +EXPORT_SYMBOL_GPL(nvdimm_forget_poison); #ifdef CONFIG_BLK_DEV_INTEGRITY int nd_integrity_init(struct gendisk *disk, unsigned long meta_size) |