btrfs: use existing device constraints table btrfs_raid_array
We should avoid duplicating the device constraints, let's use the
btrfs_raid_array in btrfs_check_raid_min_devices.
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 6b38b72..055fbeb 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1731,6 +1731,7 @@
{
u64 all_avail;
unsigned seq;
+ int i;
do {
seq = read_seqbegin(&fs_info->profiles_lock);
@@ -1740,22 +1741,16 @@
fs_info->avail_metadata_alloc_bits;
} while (read_seqretry(&fs_info->profiles_lock, seq));
- if ((all_avail & BTRFS_BLOCK_GROUP_RAID10) && num_devices < 4) {
- return BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET;
- }
+ for (i = 0; i < BTRFS_NR_RAID_TYPES; i++) {
+ if (!(all_avail & btrfs_raid_group[i]))
+ continue;
- if ((all_avail & BTRFS_BLOCK_GROUP_RAID1) && num_devices < 2) {
- return BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET;
- }
+ if (num_devices < btrfs_raid_array[i].devs_min) {
+ int ret = btrfs_raid_mindev_error[i];
- if ((all_avail & BTRFS_BLOCK_GROUP_RAID5) &&
- fs_info->fs_devices->rw_devices < 2) {
- return BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET;
- }
-
- if ((all_avail & BTRFS_BLOCK_GROUP_RAID6) &&
- fs_info->fs_devices->rw_devices < 3) {
- return BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET;
+ if (ret)
+ return ret;
+ }
}
return 0;