diff options
Diffstat (limited to 'fs/btrfs/block-group.c')
| -rw-r--r-- | fs/btrfs/block-group.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index d4c8dc550889..fec7a34b27f3 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -1501,6 +1501,7 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) mutex_lock(&fs_info->reclaim_bgs_lock); spin_lock(&fs_info->unused_bgs_lock); while (!list_empty(&fs_info->reclaim_bgs)) { + u64 zone_unusable; int ret = 0; bg = list_first_entry(&fs_info->reclaim_bgs, @@ -1534,13 +1535,22 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) goto next; } + /* + * Cache the zone_unusable value before turning the block group + * to read only. As soon as the blog group is read only it's + * zone_unusable value gets moved to the block group's read-only + * bytes and isn't available for calculations anymore. + */ + zone_unusable = bg->zone_unusable; ret = inc_block_group_ro(bg, 0); up_write(&space_info->groups_sem); if (ret < 0) goto next; - btrfs_info(fs_info, "reclaiming chunk %llu with %llu%% used", - bg->start, div64_u64(bg->used * 100, bg->length)); + btrfs_info(fs_info, + "reclaiming chunk %llu with %llu%% used %llu%% unusable", + bg->start, div_u64(bg->used * 100, bg->length), + div64_u64(zone_unusable * 100, bg->length)); trace_btrfs_reclaim_block_group(bg); ret = btrfs_relocate_chunk(fs_info, bg->start); if (ret) |