Signed-off-by: Hannes Reinecke <[email protected]>
---
drivers/md/dm-zoned-metadata.c | 98 +++++++++++++++++++++++-------------------
1 file changed, 53 insertions(+), 45 deletions(-)
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 3da6702bb1ae..b70a988fa771 100644
--- a/drivers/md/dm-zoned-metadata.c
+++ b/drivers/md/dm-zoned-metadata.c
@@ -174,7 +174,7 @@ struct dmz_metadata {
/* Zone information array */
struct xarray zones;
- struct dmz_sb sb[3];
+ struct dmz_sb sb[2];
unsigned int mblk_primary;
unsigned int sb_version;
u64 sb_gen;
@@ -995,10 +995,11 @@ int dmz_flush_metadata(struct dmz_metadata *zmd)
/*
* Check super block.
*/
-static int dmz_check_sb(struct dmz_metadata *zmd, unsigned int set)
+static int dmz_check_sb(struct dmz_metadata *zmd, struct dmz_sb *dsb,
+ bool tertiary)
{
- struct dmz_super *sb = zmd->sb[set].sb;
- struct dmz_dev *dev = zmd->sb[set].dev;
+ struct dmz_super *sb = dsb->sb;
+ struct dmz_dev *dev = dsb->dev;
unsigned int nr_meta_zones, nr_data_zones;
u32 crc, stored_crc;
u64 gen;
@@ -1015,7 +1016,7 @@ static int dmz_check_sb(struct dmz_metadata *zmd,
unsigned int set)
DMZ_META_VER, zmd->sb_version);
return -EINVAL;
}
- if ((zmd->sb_version < 1) && (set == 2)) {
+ if ((zmd->sb_version < 1) && tertiary) {
dmz_dev_err(dev, "Tertiary superblocks are not supported");
return -EINVAL;
}
@@ -1059,7 +1060,7 @@ static int dmz_check_sb(struct dmz_metadata *zmd,
unsigned int set)
return -ENXIO;
}
- if (set == 2) {
+ if (tertiary) {
/*
* Generation number should be 0, but it doesn't
* really matter if it isn't.
@@ -1108,13 +1109,13 @@ static int dmz_check_sb(struct dmz_metadata *zmd,
unsigned int set)
/*
* Read the first or second super block from disk.
*/
-static int dmz_read_sb(struct dmz_metadata *zmd, unsigned int set)
+static int dmz_read_sb(struct dmz_metadata *zmd, struct dmz_sb *sb, int set)
{
DMDEBUG("(%s): read superblock set %d dev %s block %llu",
zmd->devname, set, zmd->sb[set].dev->name,
zmd->sb[set].block);
- return dmz_rdwr_block(zmd->sb[set].dev, REQ_OP_READ,
- zmd->sb[set].block, zmd->sb[set].mblk->page);
+ return dmz_rdwr_block(sb->dev, REQ_OP_READ,
+ sb->block, sb->mblk->page);
}
/*
@@ -1142,7 +1143,7 @@ static int dmz_lookup_secondary_sb(struct dmz_metadata
*zmd)
zmd->sb[1].zone = xa_load(&zmd->zones, zone_id + 1);
zmd->sb[1].dev = dmz_zone_to_dev(zmd, zmd->sb[1].zone);
for (i = 1; i < zmd->nr_rnd_zones; i++) {
- if (dmz_read_sb(zmd, 1) != 0)
+ if (dmz_read_sb(zmd, &zmd->sb[1], 1) != 0)
break;
if (le32_to_cpu(zmd->sb[1].sb->magic) == DMZ_MAGIC)
return 0;
@@ -1160,9 +1161,9 @@ static int dmz_lookup_secondary_sb(struct dmz_metadata
*zmd)
}
/*
- * Read the first or second super block from disk.
+ * Read a super block from disk.
*/
-static int dmz_get_sb(struct dmz_metadata *zmd, unsigned int set)
+static int dmz_get_sb(struct dmz_metadata *zmd, struct dmz_sb *sb, int set)
{
struct dmz_mblock *mblk;
int ret;
@@ -1172,14 +1173,14 @@ static int dmz_get_sb(struct dmz_metadata *zmd,
unsigned int set)
if (!mblk)
return -ENOMEM;
- zmd->sb[set].mblk = mblk;
- zmd->sb[set].sb = mblk->data;
+ sb->mblk = mblk;
+ sb->sb = mblk->data;
/* Read super block */
- ret = dmz_read_sb(zmd, set);
+ ret = dmz_read_sb(zmd, sb, set);
if (ret) {
dmz_free_mblock(zmd, mblk);
- zmd->sb[set].mblk = NULL;
+ sb->mblk = NULL;
return ret;
}
@@ -1253,13 +1254,13 @@ static int dmz_load_sb(struct dmz_metadata *zmd)
/* Read and check the primary super block */
zmd->sb[0].block = dmz_start_block(zmd, zmd->sb[0].zone);
zmd->sb[0].dev = dmz_zone_to_dev(zmd, zmd->sb[0].zone);
- ret = dmz_get_sb(zmd, 0);
+ ret = dmz_get_sb(zmd, &zmd->sb[0], 0);
if (ret) {
dmz_dev_err(zmd->sb[0].dev, "Read primary super block failed");
return ret;
}
- ret = dmz_check_sb(zmd, 0);
+ ret = dmz_check_sb(zmd, &zmd->sb[0], false);
/* Read and check secondary super block */
if (ret == 0) {
@@ -1272,7 +1273,7 @@ static int dmz_load_sb(struct dmz_metadata *zmd)
}
zmd->sb[1].block = dmz_start_block(zmd, zmd->sb[1].zone);
zmd->sb[1].dev = dmz_zone_to_dev(zmd, zmd->sb[1].zone);
- ret = dmz_get_sb(zmd, 1);
+ ret = dmz_get_sb(zmd, &zmd->sb[1], 1);
} else
ret = dmz_lookup_secondary_sb(zmd);
@@ -1281,7 +1282,7 @@ static int dmz_load_sb(struct dmz_metadata *zmd)
return ret;
}
- ret = dmz_check_sb(zmd, 1);
+ ret = dmz_check_sb(zmd, &zmd->sb[1], false);
if (ret == 0)
sb_good[1] = true;
@@ -1326,18 +1327,32 @@ static int dmz_load_sb(struct dmz_metadata *zmd)
"Using super block %u (gen %llu)",
zmd->mblk_primary, zmd->sb_gen);
- if ((zmd->sb_version > 1) && zmd->sb[2].zone) {
- zmd->sb[2].block = dmz_start_block(zmd, zmd->sb[2].zone);
- zmd->sb[2].dev = dmz_zone_to_dev(zmd, zmd->sb[2].zone);
- ret = dmz_get_sb(zmd, 2);
- if (ret) {
- dmz_dev_err(zmd->sb[2].dev,
- "Read tertiary super block failed");
- return ret;
+ if (zmd->sb_version > 1) {
+ int i;
+
+ for (i = 1; i < zmd->nr_devs; i++) {
+ struct dmz_sb sb;
