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btrfs: move btrfs_raid_type_names values to btrfs_raid_attr table 

Add a new member struct btrfs_raid_attr::raid_name so that
btrfs_raid_array can maintain the name of the raid type, and so we can
drop btrfs_raid_type_names.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
hifive-unleashed-5.1
Anand Jain 2018-04-25 19:01:42 +08:00 committed by David Sterba
parent b545993694
commit ed23467b18
3 changed files with 18 additions and 18 deletions
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18
fs/btrfs/extent-tree.c
View File

@ -7380,24 +7380,6 @@ wait_block_group_cache_done(struct btrfs_block_group_cache *cache)
return ret;
}
static const char *btrfs_raid_type_names[BTRFS_NR_RAID_TYPES] = {
[BTRFS_RAID_RAID10] = "raid10",
[BTRFS_RAID_RAID1] = "raid1",
[BTRFS_RAID_DUP] = "dup",
[BTRFS_RAID_RAID0] = "raid0",
[BTRFS_RAID_SINGLE] = "single",
[BTRFS_RAID_RAID5] = "raid5",
[BTRFS_RAID_RAID6] = "raid6",
};
static const char *get_raid_name(enum btrfs_raid_types type)
{
if (type >= BTRFS_NR_RAID_TYPES)
return NULL;
return btrfs_raid_type_names[type];
}
enum btrfs_loop_type {
LOOP_CACHING_NOWAIT = 0,
LOOP_CACHING_WAIT = 1,

15
fs/btrfs/volumes.c
View File

@ -40,6 +40,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.tolerated_failures = 1,
.devs_increment = 2,
.ncopies = 2,
.raid_name = "raid10",
},
[BTRFS_RAID_RAID1] = {
.sub_stripes = 1,
@ -49,6 +50,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.tolerated_failures = 1,
.devs_increment = 2,
.ncopies = 2,
.raid_name = "raid1",
},
[BTRFS_RAID_DUP] = {
.sub_stripes = 1,
@ -58,6 +60,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.tolerated_failures = 0,
.devs_increment = 1,
.ncopies = 2,
.raid_name = "dup",
},
[BTRFS_RAID_RAID0] = {
.sub_stripes = 1,
@ -67,6 +70,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.tolerated_failures = 0,
.devs_increment = 1,
.ncopies = 1,
.raid_name = "raid0",
},
[BTRFS_RAID_SINGLE] = {
.sub_stripes = 1,
@ -76,6 +80,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.tolerated_failures = 0,
.devs_increment = 1,
.ncopies = 1,
.raid_name = "single",
},
[BTRFS_RAID_RAID5] = {
.sub_stripes = 1,
@ -85,6 +90,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.tolerated_failures = 1,
.devs_increment = 1,
.ncopies = 2,
.raid_name = "raid5",
},
[BTRFS_RAID_RAID6] = {
.sub_stripes = 1,
@ -94,9 +100,18 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.tolerated_failures = 2,
.devs_increment = 1,
.ncopies = 3,
.raid_name = "raid6",
},
};
const char *get_raid_name(enum btrfs_raid_types type)
{
if (type >= BTRFS_NR_RAID_TYPES)
return NULL;
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,

3
fs/btrfs/volumes.h
View File

@ -329,6 +329,7 @@ struct btrfs_raid_attr {
int tolerated_failures; /* max tolerated fail devs */
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 */
};
extern const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES];
@ -550,6 +551,8 @@ static inline enum btrfs_raid_types btrfs_bg_flags_to_raid_index(u64 flags)
return BTRFS_RAID_SINGLE; /* BTRFS_BLOCK_GROUP_SINGLE */
}
const char *get_raid_name(enum btrfs_raid_types type);
void btrfs_update_commit_device_size(struct btrfs_fs_info *fs_info);
void btrfs_update_commit_device_bytes_used(struct btrfs_transaction *trans);