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libnvdimm: Fix endian conversion issues 

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commit 86aa66687442ef45909ff9814b82b4d2bb892294 upstream.

nd_label->dpa issue was observed when trying to enable the namespace created
with little-endian kernel on a big-endian kernel. That made me run
`sparse` on the rest of the code and other changes are the result of that.

Fixes: d9b83c7569 ("libnvdimm, btt: rework error clearing")
Fixes: 9dedc73a4658 ("libnvdimm/btt: Fix LBA masking during 'free list' population")
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/20190809074726.27815-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Aneesh Kumar K.V 2019-08-09 13:17:26 +05:30 committed by Greg Kroah-Hartman
parent 7cbf0e5cea
commit ee37d219a1
2 changed files with 8 additions and 7 deletions
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8
drivers/nvdimm/btt.c
View file

@ -400,9 +400,9 @@ static int btt_flog_write(struct arena_info *arena, u32 lane, u32 sub,
arena->freelist[lane].sub = 1 - arena->freelist[lane].sub;
if (++(arena->freelist[lane].seq) == 4)
arena->freelist[lane].seq = 1;
if (ent_e_flag(ent->old_map))
if (ent_e_flag(le32_to_cpu(ent->old_map)))
arena->freelist[lane].has_err = 1;
arena->freelist[lane].block = le32_to_cpu(ent_lba(ent->old_map));
arena->freelist[lane].block = ent_lba(le32_to_cpu(ent->old_map));
return ret;
}
@ -568,8 +568,8 @@ static int btt_freelist_init(struct arena_info *arena)
* FIXME: if error clearing fails during init, we want to make
* the BTT read-only
*/
if (ent_e_flag(log_new.old_map) &&
!ent_normal(log_new.old_map)) {
if (ent_e_flag(le32_to_cpu(log_new.old_map)) &&
!ent_normal(le32_to_cpu(log_new.old_map))) {
arena->freelist[i].has_err = 1;
ret = arena_clear_freelist_error(arena, i);
if (ret)

7
drivers/nvdimm/namespace_devs.c
View file

@ -1996,7 +1996,7 @@ static struct device *create_namespace_pmem(struct nd_region *nd_region,
nd_mapping = &nd_region->mapping[i];
label_ent = list_first_entry_or_null(&nd_mapping->labels,
typeof(*label_ent), list);
label0 = label_ent ? label_ent->label : 0;
label0 = label_ent ? label_ent->label : NULL;
if (!label0) {
WARN_ON(1);
@ -2332,8 +2332,9 @@ static struct device **scan_labels(struct nd_region *nd_region)
continue;
/* skip labels that describe extents outside of the region */
if (nd_label->dpa < nd_mapping->start || nd_label->dpa > map_end)
continue;
if (__le64_to_cpu(nd_label->dpa) < nd_mapping->start ||
__le64_to_cpu(nd_label->dpa) > map_end)
continue;
i = add_namespace_resource(nd_region, nd_label, devs, count);
if (i < 0)