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-rw-r--r--drivers/nvdimm/blk.c3
-rw-r--r--drivers/nvdimm/btt.c67
-rw-r--r--drivers/nvdimm/btt_devs.c2
-rw-r--r--drivers/nvdimm/claim.c6
-rw-r--r--drivers/nvdimm/nd.h1
-rw-r--r--drivers/nvdimm/pfn_devs.c4
-rw-r--r--include/linux/nd.h12
7 files changed, 53 insertions, 42 deletions
diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c
index 9faaa9694d87..822198a75e96 100644
--- a/drivers/nvdimm/blk.c
+++ b/drivers/nvdimm/blk.c
@@ -218,7 +218,8 @@ static blk_qc_t nd_blk_make_request(struct request_queue *q, struct bio *bio)
}
static int nsblk_rw_bytes(struct nd_namespace_common *ndns,
- resource_size_t offset, void *iobuf, size_t n, int rw)
+ resource_size_t offset, void *iobuf, size_t n, int rw,
+ unsigned long flags)
{
struct nd_namespace_blk *nsblk = to_nd_namespace_blk(&ndns->dev);
struct nd_blk_region *ndbr = to_ndbr(nsblk);
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 368795aad5c9..aa977cd4869d 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -32,25 +32,25 @@ enum log_ent_request {
};
static int arena_read_bytes(struct arena_info *arena, resource_size_t offset,
- void *buf, size_t n)
+ void *buf, size_t n, unsigned long flags)
{
struct nd_btt *nd_btt = arena->nd_btt;
struct nd_namespace_common *ndns = nd_btt->ndns;
/* arena offsets are 4K from the base of the device */
offset += SZ_4K;
- return nvdimm_read_bytes(ndns, offset, buf, n);
+ return nvdimm_read_bytes(ndns, offset, buf, n, flags);
}
static int arena_write_bytes(struct arena_info *arena, resource_size_t offset,
- void *buf, size_t n)
+ void *buf, size_t n, unsigned long flags)
{
struct nd_btt *nd_btt = arena->nd_btt;
struct nd_namespace_common *ndns = nd_btt->ndns;
/* arena offsets are 4K from the base of the device */
offset += SZ_4K;
- return nvdimm_write_bytes(ndns, offset, buf, n);
+ return nvdimm_write_bytes(ndns, offset, buf, n, flags);
}
static int btt_info_write(struct arena_info *arena, struct btt_sb *super)
@@ -58,19 +58,19 @@ static int btt_info_write(struct arena_info *arena, struct btt_sb *super)
int ret;
ret = arena_write_bytes(arena, arena->info2off, super,
- sizeof(struct btt_sb));
+ sizeof(struct btt_sb), 0);
if (ret)
return ret;
return arena_write_bytes(arena, arena->infooff, super,
- sizeof(struct btt_sb));
+ sizeof(struct btt_sb), 0);
}
static int btt_info_read(struct arena_info *arena, struct btt_sb *super)
{
WARN_ON(!super);
return arena_read_bytes(arena, arena->infooff, super,
- sizeof(struct btt_sb));
+ sizeof(struct btt_sb), 0);
}
/*
@@ -79,16 +79,17 @@ static int btt_info_read(struct arena_info *arena, struct btt_sb *super)
* mapping is in little-endian
* mapping contains 'E' and 'Z' flags as desired
*/
-static int __btt_map_write(struct arena_info *arena, u32 lba, __le32 mapping)
+static int __btt_map_write(struct arena_info *arena, u32 lba, __le32 mapping,
+ unsigned long flags)
{
u64 ns_off = arena->mapoff + (lba * MAP_ENT_SIZE);
WARN_ON(lba >= arena->external_nlba);
- return arena_write_bytes(arena, ns_off, &mapping, MAP_ENT_SIZE);
+ return arena_write_bytes(arena, ns_off, &mapping, MAP_ENT_SIZE, flags);
}
static int btt_map_write(struct arena_info *arena, u32 lba, u32 mapping,
- u32 z_flag, u32 e_flag)
+ u32 z_flag, u32 e_flag, unsigned long rwb_flags)
{
u32 ze;
__le32 mapping_le;
@@ -127,11 +128,11 @@ static int btt_map_write(struct arena_info *arena, u32 lba, u32 mapping,
}
mapping_le = cpu_to_le32(mapping);
- return __btt_map_write(arena, lba, mapping_le);
+ return __btt_map_write(arena, lba, mapping_le, rwb_flags);
}
static int btt_map_read(struct arena_info *arena, u32 lba, u32 *mapping,
- int *trim, int *error)
+ int *trim, int *error, unsigned long rwb_flags)
{
int ret;
__le32 in;
@@ -140,7 +141,7 @@ static int btt_map_read(struct arena_info *arena, u32 lba, u32 *mapping,
WARN_ON(lba >= arena->external_nlba);
- ret = arena_read_bytes(arena, ns_off, &in, MAP_ENT_SIZE);
+ ret = arena_read_bytes(arena, ns_off, &in, MAP_ENT_SIZE, rwb_flags);
if (ret)
return ret;
@@ -189,7 +190,7 @@ static int btt_log_read_pair(struct arena_info *arena, u32 lane,
WARN_ON(!ent);
return arena_read_bytes(arena,
arena->logoff + (2 * lane * LOG_ENT_SIZE), ent,
- 2 * LOG_ENT_SIZE);
+ 2 * LOG_ENT_SIZE, 0);
}
static struct dentry *debugfs_root;
@@ -335,7 +336,7 @@ static int btt_log_read(struct arena_info *arena, u32 lane,
* btt_flog_write is the wrapper for updating the freelist elements
*/
static int __btt_log_write(struct arena_info *arena, u32 lane,
- u32 sub, struct log_entry *ent)
+ u32 sub, struct log_entry *ent, unsigned long flags)
{
int ret;
/*
@@ -350,13 +351,13 @@ static int __btt_log_write(struct arena_info *arena, u32 lane,
void *src = ent;
/* split the 16B write into atomic, durable halves */
- ret = arena_write_bytes(arena, ns_off, src, log_half);
+ ret = arena_write_bytes(arena, ns_off, src, log_half, flags);
if (ret)
return ret;
ns_off += log_half;
src += log_half;
- return arena_write_bytes(arena, ns_off, src, log_half);
+ return arena_write_bytes(arena, ns_off, src, log_half, flags);
}
static int btt_flog_write(struct arena_info *arena, u32 lane, u32 sub,
@@ -364,7 +365,7 @@ static int btt_flog_write(struct arena_info *arena, u32 lane, u32 sub,
{
int ret;
- ret = __btt_log_write(arena, lane, sub, ent);
+ ret = __btt_log_write(arena, lane, sub, ent, NVDIMM_IO_ATOMIC);
if (ret)
return ret;
@@ -397,7 +398,7 @@ static int btt_map_init(struct arena_info *arena)
size_t size = min(mapsize, chunk_size);
ret = arena_write_bytes(arena, arena->mapoff + offset, zerobuf,
- size);
+ size, 0);
if (ret)
goto free;
@@ -428,10 +429,10 @@ static int btt_log_init(struct arena_info *arena)
log.old_map = cpu_to_le32(arena->external_nlba + i);
log.new_map = cpu_to_le32(arena->external_nlba + i);
log.seq = cpu_to_le32(LOG_SEQ_INIT);
- ret = __btt_log_write(arena, i, 0, &log);
+ ret = __btt_log_write(arena, i, 0, &log, 0);
if (ret)
return ret;
- ret = __btt_log_write(arena, i, 1, &zerolog);
+ ret = __btt_log_write(arena, i, 1, &zerolog, 0);
if (ret)
return ret;
}
@@ -470,7 +471,7 @@ static int btt_freelist_init(struct arena_info *arena)
/* Check if map recovery is needed */
ret = btt_map_read(arena, le32_to_cpu(log_new.lba), &map_entry,
- NULL, NULL);
+ NULL, NULL, 0);
if (ret)
return ret;
if ((le32_to_cpu(log_new.new_map) != map_entry) &&
@@ -480,7 +481,7 @@ static int btt_freelist_init(struct arena_info *arena)
* to complete the map write. So fix up the map.
*/
ret = btt_map_write(arena, le32_to_cpu(log_new.lba),
- le32_to_cpu(log_new.new_map), 0, 0);
+ le32_to_cpu(log_new.new_map), 0, 0, 0);
if (ret)
return ret;
}
@@ -875,7 +876,7 @@ static int btt_data_read(struct arena_info *arena, struct page *page,
u64 nsoff = to_namespace_offset(arena, lba);
void *mem = kmap_atomic(page);
- ret = arena_read_bytes(arena, nsoff, mem + off, len);
+ ret = arena_read_bytes(arena, nsoff, mem + off, len, NVDIMM_IO_ATOMIC);
kunmap_atomic(mem);
return ret;
@@ -888,7 +889,7 @@ static int btt_data_write(struct arena_info *arena, u32 lba,
u64 nsoff = to_namespace_offset(arena, lba);
void *mem = kmap_atomic(page);
- ret = arena_write_bytes(arena, nsoff, mem + off, len);
+ ret = arena_write_bytes(arena, nsoff, mem + off, len, NVDIMM_IO_ATOMIC);
kunmap_atomic(mem);
return ret;
@@ -931,10 +932,12 @@ static int btt_rw_integrity(struct btt *btt, struct bio_integrity_payload *bip,
mem = kmap_atomic(bv.bv_page);
if (rw)
ret = arena_write_bytes(arena, meta_nsoff,
- mem + bv.bv_offset, cur_len);
+ mem + bv.bv_offset, cur_len,
+ NVDIMM_IO_ATOMIC);
else
ret = arena_read_bytes(arena, meta_nsoff,
- mem + bv.bv_offset, cur_len);
+ mem + bv.bv_offset, cur_len,
+ NVDIMM_IO_ATOMIC);
kunmap_atomic(mem);
if (ret)
@@ -976,7 +979,8 @@ static int btt_read_pg(struct btt *btt, struct bio_integrity_payload *bip,
cur_len = min(btt->sector_size, len);
- ret = btt_map_read(arena, premap, &postmap, &t_flag, &e_flag);
+ ret = btt_map_read(arena, premap, &postmap, &t_flag, &e_flag,
+ NVDIMM_IO_ATOMIC);
if (ret)
goto out_lane;
@@ -1006,7 +1010,7 @@ static int btt_read_pg(struct btt *btt, struct bio_integrity_payload *bip,
barrier();
ret = btt_map_read(arena, premap, &new_map, &t_flag,
- &e_flag);
+ &e_flag, NVDIMM_IO_ATOMIC);
if (ret)
goto out_rtt;
@@ -1093,7 +1097,8 @@ static int btt_write_pg(struct btt *btt, struct bio_integrity_payload *bip,
}
lock_map(arena, premap);
- ret = btt_map_read(arena, premap, &old_postmap, NULL, NULL);
+ ret = btt_map_read(arena, premap, &old_postmap, NULL, NULL,
+ NVDIMM_IO_ATOMIC);
if (ret)
goto out_map;
if (old_postmap >= arena->internal_nlba) {
@@ -1110,7 +1115,7 @@ static int btt_write_pg(struct btt *btt, struct bio_integrity_payload *bip,
if (ret)
goto out_map;
- ret = btt_map_write(arena, premap, new_postmap, 0, 0);
+ ret = btt_map_write(arena, premap, new_postmap, 0, 0, 0);
if (ret)
goto out_map;
diff --git a/drivers/nvdimm/btt_devs.c b/drivers/nvdimm/btt_devs.c
index 4b76af2b8715..ae00dc0d9791 100644
--- a/drivers/nvdimm/btt_devs.c
+++ b/drivers/nvdimm/btt_devs.c
@@ -273,7 +273,7 @@ static int __nd_btt_probe(struct nd_btt *nd_btt,
if (!btt_sb || !ndns || !nd_btt)
return -ENODEV;
- if (nvdimm_read_bytes(ndns, SZ_4K, btt_sb, sizeof(*btt_sb)))
+ if (nvdimm_read_bytes(ndns, SZ_4K, btt_sb, sizeof(*btt_sb), 0))
return -ENXIO;
if (nvdimm_namespace_capacity(ndns) < SZ_16M)
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 93d128da1c92..7ceb5fa4f2a1 100644
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -228,7 +228,8 @@ u64 nd_sb_checksum(struct nd_gen_sb *nd_gen_sb)
EXPORT_SYMBOL(nd_sb_checksum);
static int nsio_rw_bytes(struct nd_namespace_common *ndns,
- resource_size_t offset, void *buf, size_t size, int rw)
+ resource_size_t offset, void *buf, size_t size, int rw,
+ unsigned long flags)
{
struct nd_namespace_io *nsio = to_nd_namespace_io(&ndns->dev);
unsigned int sz_align = ALIGN(size + (offset & (512 - 1)), 512);
@@ -259,7 +260,8 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
* work around this collision.
*/
if (IS_ALIGNED(offset, 512) && IS_ALIGNED(size, 512)
- && (!ndns->claim || !is_nd_btt(ndns->claim))) {
+ && !(flags & NVDIMM_IO_ATOMIC)
+ && !ndns->claim) {
long cleared;
cleared = nvdimm_clear_poison(&ndns->dev,
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index 77d032192bf7..03852d738eec 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -31,6 +31,7 @@ enum {
ND_MAX_LANES = 256,
SECTOR_SHIFT = 9,
INT_LBASIZE_ALIGNMENT = 64,
+ NVDIMM_IO_ATOMIC = 1,
};
struct nd_poison {
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index 335c8175410b..a6c403600d19 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -357,7 +357,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
if (!is_nd_pmem(nd_pfn->dev.parent))
return -ENODEV;
- if (nvdimm_read_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb)))
+ if (nvdimm_read_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb), 0))
return -ENXIO;
if (memcmp(pfn_sb->signature, sig, PFN_SIG_LEN) != 0)
@@ -662,7 +662,7 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
checksum = nd_sb_checksum((struct nd_gen_sb *) pfn_sb);
pfn_sb->checksum = cpu_to_le64(checksum);
- return nvdimm_write_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb));
+ return nvdimm_write_bytes(ndns, SZ_4K, pfn_sb, sizeof(*pfn_sb), 0);
}
/*
diff --git a/include/linux/nd.h b/include/linux/nd.h
index fa66aeed441a..194b8e002ea7 100644
--- a/include/linux/nd.h
+++ b/include/linux/nd.h
@@ -48,7 +48,7 @@ struct nd_namespace_common {
struct device dev;
struct device *claim;
int (*rw_bytes)(struct nd_namespace_common *, resource_size_t offset,
- void *buf, size_t size, int rw);
+ void *buf, size_t size, int rw, unsigned long flags);
};
static inline struct nd_namespace_common *to_ndns(struct device *dev)
@@ -134,9 +134,10 @@ static inline struct nd_namespace_blk *to_nd_namespace_blk(const struct device *
* @buf is up-to-date upon return from this routine.
*/
static inline int nvdimm_read_bytes(struct nd_namespace_common *ndns,
- resource_size_t offset, void *buf, size_t size)
+ resource_size_t offset, void *buf, size_t size,
+ unsigned long flags)
{
- return ndns->rw_bytes(ndns, offset, buf, size, READ);
+ return ndns->rw_bytes(ndns, offset, buf, size, READ, flags);
}
/**
@@ -152,9 +153,10 @@ static inline int nvdimm_read_bytes(struct nd_namespace_common *ndns,
* to media is handled internal to the @ndns driver, if at all.
*/
static inline int nvdimm_write_bytes(struct nd_namespace_common *ndns,
- resource_size_t offset, void *buf, size_t size)
+ resource_size_t offset, void *buf, size_t size,
+ unsigned long flags)
{
- return ndns->rw_bytes(ndns, offset, buf, size, WRITE);
+ return ndns->rw_bytes(ndns, offset, buf, size, WRITE, flags);
}
#define MODULE_ALIAS_ND_DEVICE(type) \
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-16 08:45:07 +0300