Btrfs: kill free_space pointer from inode structure

Inodes always allocate free space with BTRFS_BLOCK_GROUP_DATA type,
which means every inode has the same BTRFS_I(inode)->free_space pointer.

This shrinks struct btrfs_inode by 4 bytes (or 8 bytes on 64 bits).

Signed-off-by: Li Zefan <lizefan@huawei.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 321c415dea7f..ee45ebf42192 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4082,7 +4082,6 @@ static int btrfs_init_locked_inode(struct inode *inode, void *p)
         struct btrfs_iget_args *args = p;
         inode->i_ino = args->ino;
         BTRFS_I(inode)->root = args->root;
-        btrfs_set_inode_space_info(args->root, inode);
         return 0;
 }
 
@@ -4667,7 +4666,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
         BTRFS_I(inode)->root = root;
         BTRFS_I(inode)->generation = trans->transid;
         inode->i_generation = BTRFS_I(inode)->generation;
-        btrfs_set_inode_space_info(root, inode);
 
         if (S_ISDIR(mode))
                 owner = 0;
@@ -6944,7 +6942,6 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
                 return NULL;
 
         ei->root = NULL;
-        ei->space_info = NULL;
         ei->generation = 0;
         ei->last_trans = 0;
         ei->last_sub_trans = 0;