| Message ID | 20190607064732.30384-1-aneesh.kumar@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mm/nvdimm: Fix endian conversion issues | expand |
On Fri, 2019-06-07 at 12:17 +0530, Aneesh Kumar K.V wrote: > 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. > > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> > --- > drivers/nvdimm/btt.c | 8 ++++---- > drivers/nvdimm/namespace_devs.c | 7 ++++--- > 2 files changed, 8 insertions(+), 7 deletions(-) The two BTT fixes seem like they may apply to stable as well, the problematic code was introduced in relatively recent reworks/fixes. Perhaps - Fixes: d9b83c756953 ("libnvdimm, btt: rework error clearing") Fixes: 9dedc73a4658 ("libnvdimm/btt: Fix LBA masking during 'free list' population") Other than that, these look good to me. Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> > > diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c > index 4671776f5623..4ac0f5dde467 100644 > --- a/drivers/nvdimm/btt.c > +++ b/drivers/nvdimm/btt.c > @@ -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) > diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c > index c4c5a191b1d6..500c37db496a 100644 > --- a/drivers/nvdimm/namespace_devs.c > +++ b/drivers/nvdimm/namespace_devs.c > @@ -1995,7 +1995,7 @@ 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); > @@ -2330,8 +2330,9 @@ 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)
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 4671776f5623..4ac0f5dde467 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -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) diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index c4c5a191b1d6..500c37db496a 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -1995,7 +1995,7 @@ 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); @@ -2330,8 +2330,9 @@ 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)
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. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> --- drivers/nvdimm/btt.c | 8 ++++---- drivers/nvdimm/namespace_devs.c | 7 ++++--- 2 files changed, 8 insertions(+), 7 deletions(-)