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-rw-r--r--fs/btrfs/ctree.h5
-rw-r--r--fs/btrfs/extent-tree.c10
-rw-r--r--fs/btrfs/super.c11
3 files changed, 23 insertions, 3 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 29c20092847e..014fd52c01bf 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -675,7 +675,8 @@ struct btrfs_block_group_item {
struct btrfs_space_info {
u64 flags;
- u64 total_bytes; /* total bytes in the space */
+ u64 total_bytes; /* total bytes in the space,
+ this doesn't take mirrors into account */
u64 bytes_used; /* total bytes used,
this does't take mirrors into account */
u64 bytes_pinned; /* total bytes pinned, will be freed when the
@@ -687,6 +688,8 @@ struct btrfs_space_info {
u64 bytes_may_use; /* number of bytes that may be used for
delalloc/allocations */
u64 disk_used; /* total bytes used on disk */
+ u64 disk_total; /* total bytes on disk, takes mirrors into
+ account */
int full; /* indicates that we cannot allocate any more
chunks for this space */
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index c6a5d9095d5f..4669c6f8a44d 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2763,6 +2763,7 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
if (found) {
spin_lock(&found->lock);
found->total_bytes += total_bytes;
+ found->disk_total += total_bytes * factor;
found->bytes_used += bytes_used;
found->disk_used += bytes_used * factor;
found->full = 0;
@@ -2782,6 +2783,7 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
BTRFS_BLOCK_GROUP_SYSTEM |
BTRFS_BLOCK_GROUP_METADATA);
found->total_bytes = total_bytes;
+ found->disk_total = total_bytes * factor;
found->bytes_used = bytes_used;
found->disk_used = bytes_used * factor;
found->bytes_pinned = 0;
@@ -8095,6 +8097,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
struct btrfs_free_cluster *cluster;
struct btrfs_key key;
int ret;
+ int factor;
root = root->fs_info->extent_root;
@@ -8103,6 +8106,12 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
BUG_ON(!block_group->ro);
memcpy(&key, &block_group->key, sizeof(key));
+ if (block_group->flags & (BTRFS_BLOCK_GROUP_DUP |
+ BTRFS_BLOCK_GROUP_RAID1 |
+ BTRFS_BLOCK_GROUP_RAID10))
+ factor = 2;
+ else
+ factor = 1;
/* make sure this block group isn't part of an allocation cluster */
cluster = &root->fs_info->data_alloc_cluster;
@@ -8143,6 +8152,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
spin_lock(&block_group->space_info->lock);
block_group->space_info->total_bytes -= block_group->key.offset;
block_group->space_info->bytes_readonly -= block_group->key.offset;
+ block_group->space_info->disk_total -= block_group->key.offset * factor;
spin_unlock(&block_group->space_info->lock);
btrfs_clear_space_info_full(root->fs_info);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index f2393b390318..afab6ca14d03 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -716,18 +716,25 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
struct list_head *head = &root->fs_info->space_info;
struct btrfs_space_info *found;
u64 total_used = 0;
+ u64 total_used_data = 0;
int bits = dentry->d_sb->s_blocksize_bits;
__be32 *fsid = (__be32 *)root->fs_info->fsid;
rcu_read_lock();
- list_for_each_entry_rcu(found, head, list)
+ list_for_each_entry_rcu(found, head, list) {
+ if (found->flags & (BTRFS_BLOCK_GROUP_METADATA |
+ BTRFS_BLOCK_GROUP_SYSTEM))
+ total_used_data += found->disk_total;
+ else
+ total_used_data += found->disk_used;
total_used += found->disk_used;
+ }
rcu_read_unlock();
buf->f_namelen = BTRFS_NAME_LEN;
buf->f_blocks = btrfs_super_total_bytes(disk_super) >> bits;
buf->f_bfree = buf->f_blocks - (total_used >> bits);
- buf->f_bavail = buf->f_bfree;
+ buf->f_bavail = buf->f_blocks - (total_used_data >> bits);
buf->f_bsize = dentry->d_sb->s_blocksize;
buf->f_type = BTRFS_SUPER_MAGIC;