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authorYan, Zheng <zheng.yan@oracle.com>2010-05-16 18:46:24 +0400
committerChris Mason <chris.mason@oracle.com>2010-05-25 18:34:47 +0400
commitb742bb82f1676d50103ade0ba89bfb79debabe73 (patch)
treeceac53988a3c158571fb91d54e3027403363fb47 /fs/btrfs/super.c
parente40152ee1e1c7a63f4777791863215e3faa37a86 (diff)
downloadlinux-b742bb82f1676d50103ade0ba89bfb79debabe73.tar.xz
Btrfs: Link block groups of different raid types
The size of reserved space is stored in space_info. If block groups of different raid types are linked to separate space_info, changing allocation profile will corrupt reserved space accounting. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c22
1 files changed, 3 insertions, 19 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 1866dff0538e..55265c24ab96 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -714,34 +714,18 @@ 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 data_used = 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) {
- if (found->flags & (BTRFS_BLOCK_GROUP_DUP|
- BTRFS_BLOCK_GROUP_RAID10|
- BTRFS_BLOCK_GROUP_RAID1)) {
- total_used += found->bytes_used;
- if (found->flags & BTRFS_BLOCK_GROUP_DATA)
- data_used += found->bytes_used;
- else
- data_used += found->total_bytes;
- }
-
- total_used += found->bytes_used;
- if (found->flags & BTRFS_BLOCK_GROUP_DATA)
- data_used += found->bytes_used;
- else
- data_used += found->total_bytes;
- }
+ list_for_each_entry_rcu(found, head, list)
+ 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_blocks - (data_used >> bits);
+ buf->f_bavail = buf->f_bfree;
buf->f_bsize = dentry->d_sb->s_blocksize;
buf->f_type = BTRFS_SUPER_MAGIC;