btrfs: move btrfs_raid_group values to btrfs_raid_attr table
Add a new member struct btrfs_raid_attr::bg_flag so that
btrfs_raid_array can maintain the bit map flag of the raid type, and
so we can drop btrfs_raid_group.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7503ff1..47dbbe4 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3521,7 +3521,7 @@ int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags)
for (raid_type = 0; raid_type < BTRFS_NR_RAID_TYPES; raid_type++) {
if (raid_type == BTRFS_RAID_SINGLE)
continue;
- if (!(flags & btrfs_raid_group[raid_type]))
+ if (!(flags & btrfs_raid_array[raid_type].bg_flag))
continue;
min_tolerated = min(min_tolerated,
btrfs_raid_array[raid_type].
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index ed262d4..fdd6ac9 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4180,7 +4180,7 @@ static u64 btrfs_reduce_alloc_profile(struct btrfs_fs_info *fs_info, u64 flags)
/* First, mask out the RAID levels which aren't possible */
for (raid_type = 0; raid_type < BTRFS_NR_RAID_TYPES; raid_type++) {
if (num_devices >= btrfs_raid_array[raid_type].devs_min)
- allowed |= btrfs_raid_group[raid_type];
+ allowed |= btrfs_raid_array[raid_type].bg_flag;
}
allowed &= flags;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 6abd0eb..4fc22a6 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -41,6 +41,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.devs_increment = 2,
.ncopies = 2,
.raid_name = "raid10",
+ .bg_flag = BTRFS_BLOCK_GROUP_RAID10,
},
[BTRFS_RAID_RAID1] = {
.sub_stripes = 1,
@@ -51,6 +52,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.devs_increment = 2,
.ncopies = 2,
.raid_name = "raid1",
+ .bg_flag = BTRFS_BLOCK_GROUP_RAID1,
},
[BTRFS_RAID_DUP] = {
.sub_stripes = 1,
@@ -61,6 +63,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.devs_increment = 1,
.ncopies = 2,
.raid_name = "dup",
+ .bg_flag = BTRFS_BLOCK_GROUP_DUP,
},
[BTRFS_RAID_RAID0] = {
.sub_stripes = 1,
@@ -71,6 +74,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.devs_increment = 1,
.ncopies = 1,
.raid_name = "raid0",
+ .bg_flag = BTRFS_BLOCK_GROUP_RAID0,
},
[BTRFS_RAID_SINGLE] = {
.sub_stripes = 1,
@@ -81,6 +85,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.devs_increment = 1,
.ncopies = 1,
.raid_name = "single",
+ .bg_flag = 0,
},
[BTRFS_RAID_RAID5] = {
.sub_stripes = 1,
@@ -91,6 +96,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.devs_increment = 1,
.ncopies = 2,
.raid_name = "raid5",
+ .bg_flag = BTRFS_BLOCK_GROUP_RAID5,
},
[BTRFS_RAID_RAID6] = {
.sub_stripes = 1,
@@ -101,6 +107,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.devs_increment = 1,
.ncopies = 3,
.raid_name = "raid6",
+ .bg_flag = BTRFS_BLOCK_GROUP_RAID6,
},
};
@@ -112,16 +119,6 @@ const char *get_raid_name(enum btrfs_raid_types type)
return btrfs_raid_array[type].raid_name;
}
-const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES] = {
- [BTRFS_RAID_RAID10] = BTRFS_BLOCK_GROUP_RAID10,
- [BTRFS_RAID_RAID1] = BTRFS_BLOCK_GROUP_RAID1,
- [BTRFS_RAID_DUP] = BTRFS_BLOCK_GROUP_DUP,
- [BTRFS_RAID_RAID0] = BTRFS_BLOCK_GROUP_RAID0,
- [BTRFS_RAID_SINGLE] = 0,
- [BTRFS_RAID_RAID5] = BTRFS_BLOCK_GROUP_RAID5,
- [BTRFS_RAID_RAID6] = BTRFS_BLOCK_GROUP_RAID6,
-};
-
/*
* Table to convert BTRFS_RAID_* to the error code if minimum number of devices
* condition is not met. Zero means there's no corresponding
@@ -1899,7 +1896,7 @@ static int btrfs_check_raid_min_devices(struct btrfs_fs_info *fs_info,
} while (read_seqretry(&fs_info->profiles_lock, seq));
for (i = 0; i < BTRFS_NR_RAID_TYPES; i++) {
- if (!(all_avail & btrfs_raid_group[i]))
+ if (!(all_avail & btrfs_raid_array[i].bg_flag))
continue;
if (num_devices < btrfs_raid_array[i].devs_min) {
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 9056a90..b26f534 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -330,11 +330,11 @@ struct btrfs_raid_attr {
int devs_increment; /* ndevs has to be a multiple of this */
int ncopies; /* how many copies to data has */
const char raid_name[8]; /* name of the raid */
+ u64 bg_flag; /* block group flag of the raid */
};
extern const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES];
extern const int btrfs_raid_mindev_error[BTRFS_NR_RAID_TYPES];
-extern const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES];
struct map_lookup {
u64 type;