btrfs: separate superblock items out of fs_info

fs_info has now ~9kb, more than fits into one page. This will cause
mount failure when memory is too fragmented. Top space consumers are
super block structures super_copy and super_for_commit, ~2.8kb each.
Allocate them dynamically. fs_info will be ~3.5kb. (measured on x86_64)

Add a wrapper for freeing fs_info and all of it's dynamically allocated
members.

Signed-off-by: David Sterba <dsterba@suse.cz>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 8ca1b6b83bd1..f4d81c06d48f 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2118,9 +2118,9 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
         BUG_ON(ret);
         btrfs_wait_marked_extents(log, &log->dirty_log_pages, mark);
 
-        btrfs_set_super_log_root(&root->fs_info->super_for_commit,
+        btrfs_set_super_log_root(root->fs_info->super_for_commit,
                                 log_root_tree->node->start);
-        btrfs_set_super_log_root_level(&root->fs_info->super_for_commit,
+        btrfs_set_super_log_root_level(root->fs_info->super_for_commit,
                                 btrfs_header_level(log_root_tree->node));
 
         log_root_tree->log_batch = 0;