[RFC,06/39] btrfs: relocation: Add backref_cache::fs_info member

Commit Message

Qu Wenruo March 17, 2020, 8:10 a.m. UTC

Add this member so that we can grab fs_info without the help from
reloc_control.

Signed-off-by: Qu Wenruo <[e-mail]>
---
 fs/btrfs/relocation.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

Comments

Josef Bacik March 19, 2020, 3:21 p.m. UTC | #1

On 3/17/20 4:10 AM, Qu Wenruo wrote:
> Add this member so that we can grab fs_info without the help from
> reloc_control.
> 
> Signed-off-by: Qu Wenruo <[e-mail]>

Reviewed-by: Josef Bacik <[e-mail]>

Thanks,

Josef

Patch

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 837a8a9a3434..560a144d5b95 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -163,6 +163,8 @@  struct backref_cache {
 
 	/* The list of useless backref nodes during backref cache build */
 	struct list_head useless_node;
+
+	struct btrfs_fs_info *fs_info;
 };
 
 /*
@@ -264,7 +266,8 @@  static void mapping_tree_init(struct mapping_tree *tree)
 	spin_lock_init(&tree->lock);
 }
 
-static void backref_cache_init(struct backref_cache *cache)
+static void backref_cache_init(struct btrfs_fs_info *fs_info,
+			       struct backref_cache *cache)
 {
 	int i;
 	cache->rb_root = RB_ROOT;
@@ -275,6 +278,7 @@  static void backref_cache_init(struct backref_cache *cache)
 	INIT_LIST_HEAD(&cache->leaves);
 	INIT_LIST_HEAD(&cache->pending_edge);
 	INIT_LIST_HEAD(&cache->useless_node);
+	cache->fs_info = fs_info;
 }
 
 static void backref_cache_cleanup(struct backref_cache *cache)
@@ -4303,7 +4307,7 @@  static struct reloc_control *alloc_reloc_control(struct btrfs_fs_info *fs_info)
 
 	INIT_LIST_HEAD(&rc->reloc_roots);
 	INIT_LIST_HEAD(&rc->dirty_subvol_roots);
-	backref_cache_init(&rc->backref_cache);
+	backref_cache_init(fs_info, &rc->backref_cache);
 	mapping_tree_init(&rc->reloc_root_tree);
 	extent_io_tree_init(fs_info, &rc->processed_blocks,
 			    IO_TREE_RELOC_BLOCKS, NULL);