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btrfs: call functions that always use the same root with fs_info instead

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There are many functions that are always called with the same root
argument.  Rather than passing the same root every time, we can
pass an fs_info pointer instead and have the function get the root
pointer itself.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jeff Mahoney
2016-06-21 21:16:51 -04:00
committed by David Sterba
parent 5b4aacefb8
commit 6bccf3ab1e
14 changed files with 115 additions and 102 deletions
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13
fs/btrfs/super.c
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@@ -305,7 +305,7 @@ void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function,
static void btrfs_put_super(struct super_block *sb)
{
close_ctree(btrfs_sb(sb)->tree_root);
close_ctree(btrfs_sb(sb));
}
enum {
@@ -1173,7 +1173,7 @@ static int btrfs_fill_super(struct super_block *sb,
return 0;
fail_close:
close_ctree(fs_info->tree_root);
close_ctree(fs_info);
return err;
}
@@ -1784,7 +1784,7 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
btrfs_scrub_cancel(fs_info);
btrfs_pause_balance(fs_info);
ret = btrfs_commit_super(root);
ret = btrfs_commit_super(fs_info);
if (ret)
goto restore;
} else {
@@ -1901,9 +1901,10 @@ static inline void btrfs_descending_sort_devices(
* The helper to calc the free space on the devices that can be used to store
* file data.
*/
static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
u64 *free_bytes)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_root *root = fs_info->tree_root;
struct btrfs_device_info *devices_info;
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
@@ -2137,7 +2138,7 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
spin_unlock(&block_rsv->lock);
buf->f_bavail = div_u64(total_free_data, factor);
ret = btrfs_calc_avail_data_space(fs_info->tree_root, &total_free_data);
ret = btrfs_calc_avail_data_space(fs_info, &total_free_data);
if (ret)
return ret;
buf->f_bavail += div_u64(total_free_data, factor);