diff options
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 862df2066e7a..f24ef9020323 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -10606,6 +10606,35 @@ static void clear_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags) write_sequnlock(&fs_info->profiles_lock); } +/* + * Clear incompat bits for the following feature(s): + * + * - RAID56 - in case there's neither RAID5 nor RAID6 profile block group + * in the whole filesystem + */ +static void clear_incompat_bg_bits(struct btrfs_fs_info *fs_info, u64 flags) +{ + if (flags & BTRFS_BLOCK_GROUP_RAID56_MASK) { + struct list_head *head = &fs_info->space_info; + struct btrfs_space_info *sinfo; + + list_for_each_entry_rcu(sinfo, head, list) { + bool found = false; + + down_read(&sinfo->groups_sem); + if (!list_empty(&sinfo->block_groups[BTRFS_RAID_RAID5])) + found = true; + if (!list_empty(&sinfo->block_groups[BTRFS_RAID_RAID6])) + found = true; + up_read(&sinfo->groups_sem); + + if (found) + return; + } + btrfs_clear_fs_incompat(fs_info, RAID56); + } +} + int btrfs_remove_block_group(struct btrfs_trans_handle *trans, u64 group_start, struct extent_map *em) { @@ -10752,6 +10781,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans, clear_avail_alloc_bits(fs_info, block_group->flags); } up_write(&block_group->space_info->groups_sem); + clear_incompat_bg_bits(fs_info, block_group->flags); if (kobj) { kobject_del(kobj); kobject_put(kobj); |