btrfs: rename btrfs_block_group_cache

The type name is misleading, a single entry is named 'cache' while this
normally means a collection of objects. Rename that everywhere. Also the
identifier was quite long, making function prototypes harder to format.

Suggested-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 35 insertions, 36 deletions

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 279c41c4ba50..3283da419200 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -91,8 +91,7 @@ static struct inode *__lookup_free_space_inode(struct btrfs_root *root,
 	return inode;
 }
 
-struct inode *lookup_free_space_inode(
-		struct btrfs_block_group_cache *block_group,
+struct inode *lookup_free_space_inode(struct btrfs_block_group *block_group,
 		struct btrfs_path *path)
 {
 	struct btrfs_fs_info *fs_info = block_group->fs_info;
@@ -190,7 +189,7 @@ static int __create_free_space_inode(struct btrfs_root *root,
 }
 
 int create_free_space_inode(struct btrfs_trans_handle *trans,
-			    struct btrfs_block_group_cache *block_group,
+			    struct btrfs_block_group *block_group,
 			    struct btrfs_path *path)
 {
 	int ret;
@@ -224,7 +223,7 @@ int btrfs_check_trunc_cache_free_space(struct btrfs_fs_info *fs_info,
 }
 
 int btrfs_truncate_free_space_cache(struct btrfs_trans_handle *trans,
-				    struct btrfs_block_group_cache *block_group,
+				    struct btrfs_block_group *block_group,
 				    struct inode *inode)
 {
 	struct btrfs_root *root = BTRFS_I(inode)->root;
@@ -820,7 +819,7 @@ free_cache:
 	goto out;
 }
 
-int load_free_space_cache(struct btrfs_block_group_cache *block_group)
+int load_free_space_cache(struct btrfs_block_group *block_group)
 {
 	struct btrfs_fs_info *fs_info = block_group->fs_info;
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
@@ -919,7 +918,7 @@ out:
 static noinline_for_stack
 int write_cache_extent_entries(struct btrfs_io_ctl *io_ctl,
 			      struct btrfs_free_space_ctl *ctl,
-			      struct btrfs_block_group_cache *block_group,
+			      struct btrfs_block_group *block_group,
 			      int *entries, int *bitmaps,
 			      struct list_head *bitmap_list)
 {
@@ -1047,7 +1046,7 @@ fail:
 }
 
 static noinline_for_stack int write_pinned_extent_entries(
-			    struct btrfs_block_group_cache *block_group,
+			    struct btrfs_block_group *block_group,
 			    struct btrfs_io_ctl *io_ctl,
 			    int *entries)
 {
@@ -1146,7 +1145,7 @@ cleanup_write_cache_enospc(struct inode *inode,
 
 static int __btrfs_wait_cache_io(struct btrfs_root *root,
 				 struct btrfs_trans_handle *trans,
-				 struct btrfs_block_group_cache *block_group,
+				 struct btrfs_block_group *block_group,
 				 struct btrfs_io_ctl *io_ctl,
 				 struct btrfs_path *path, u64 offset)
 {
@@ -1215,7 +1214,7 @@ static int btrfs_wait_cache_io_root(struct btrfs_root *root,
 }
 
 int btrfs_wait_cache_io(struct btrfs_trans_handle *trans,
-			struct btrfs_block_group_cache *block_group,
+			struct btrfs_block_group *block_group,
 			struct btrfs_path *path)
 {
 	return __btrfs_wait_cache_io(block_group->fs_info->tree_root, trans,
@@ -1236,7 +1235,7 @@ int btrfs_wait_cache_io(struct btrfs_trans_handle *trans,
  */
 static int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode,
 				   struct btrfs_free_space_ctl *ctl,
-				   struct btrfs_block_group_cache *block_group,
+				   struct btrfs_block_group *block_group,
 				   struct btrfs_io_ctl *io_ctl,
 				   struct btrfs_trans_handle *trans)
 {
@@ -1374,7 +1373,7 @@ out_unlock:
 }
 
 int btrfs_write_out_cache(struct btrfs_trans_handle *trans,
-			  struct btrfs_block_group_cache *block_group,
+			  struct btrfs_block_group *block_group,
 			  struct btrfs_path *path)
 {
 	struct btrfs_fs_info *fs_info = trans->fs_info;
@@ -1652,7 +1651,7 @@ static int link_free_space(struct btrfs_free_space_ctl *ctl,
 
 static void recalculate_thresholds(struct btrfs_free_space_ctl *ctl)
 {
-	struct btrfs_block_group_cache *block_group = ctl->private;
+	struct btrfs_block_group *block_group = ctl->private;
 	u64 max_bytes;
 	u64 bitmap_bytes;
 	u64 extent_bytes;
@@ -1996,7 +1995,7 @@ static u64 add_bytes_to_bitmap(struct btrfs_free_space_ctl *ctl,
 static bool use_bitmap(struct btrfs_free_space_ctl *ctl,
 		      struct btrfs_free_space *info)
 {
-	struct btrfs_block_group_cache *block_group = ctl->private;
+	struct btrfs_block_group *block_group = ctl->private;
 	struct btrfs_fs_info *fs_info = block_group->fs_info;
 	bool forced = false;
 
@@ -2048,7 +2047,7 @@ static int insert_into_bitmap(struct btrfs_free_space_ctl *ctl,
 			      struct btrfs_free_space *info)
 {
 	struct btrfs_free_space *bitmap_info;
-	struct btrfs_block_group_cache *block_group = NULL;
+	struct btrfs_block_group *block_group = NULL;
 	int added = 0;
 	u64 bytes, offset, bytes_added;
 	int ret;
@@ -2385,7 +2384,7 @@ out:
 	return ret;
 }
 
-int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
+int btrfs_add_free_space(struct btrfs_block_group *block_group,
 			 u64 bytenr, u64 size)
 {
 	return __btrfs_add_free_space(block_group->fs_info,
@@ -2393,7 +2392,7 @@ int btrfs_add_free_space(struct btrfs_block_group_cache *block_group,
 				      bytenr, size);
 }
 
-int btrfs_remove_free_space(struct btrfs_block_group_cache *block_group,
+int btrfs_remove_free_space(struct btrfs_block_group *block_group,
 			    u64 offset, u64 bytes)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
@@ -2483,7 +2482,7 @@ out:
 	return ret;
 }
 
-void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
+void btrfs_dump_free_space(struct btrfs_block_group *block_group,
 			   u64 bytes)
 {
 	struct btrfs_fs_info *fs_info = block_group->fs_info;
@@ -2508,7 +2507,7 @@ void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
 		   "%d blocks of free space at or bigger than bytes is", count);
 }
 
-void btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group)
+void btrfs_init_free_space_ctl(struct btrfs_block_group *block_group)
 {
 	struct btrfs_fs_info *fs_info = block_group->fs_info;
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
@@ -2537,7 +2536,7 @@ void btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group)
  */
 static int
 __btrfs_return_cluster_to_free_space(
-			     struct btrfs_block_group_cache *block_group,
+			     struct btrfs_block_group *block_group,
 			     struct btrfs_free_cluster *cluster)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
@@ -2603,7 +2602,7 @@ void __btrfs_remove_free_space_cache(struct btrfs_free_space_ctl *ctl)
 	spin_unlock(&ctl->tree_lock);
 }
 
-void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group)
+void btrfs_remove_free_space_cache(struct btrfs_block_group *block_group)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
 	struct btrfs_free_cluster *cluster;
@@ -2625,7 +2624,7 @@ void btrfs_remove_free_space_cache(struct btrfs_block_group_cache *block_group)
 
 }
 
-u64 btrfs_find_space_for_alloc(struct btrfs_block_group_cache *block_group,
+u64 btrfs_find_space_for_alloc(struct btrfs_block_group *block_group,
 			       u64 offset, u64 bytes, u64 empty_size,
 			       u64 *max_extent_size)
 {
@@ -2679,7 +2678,7 @@ out:
  * cluster and remove the cluster from it.
  */
 int btrfs_return_cluster_to_free_space(
-			       struct btrfs_block_group_cache *block_group,
+			       struct btrfs_block_group *block_group,
 			       struct btrfs_free_cluster *cluster)
 {
 	struct btrfs_free_space_ctl *ctl;
@@ -2713,7 +2712,7 @@ int btrfs_return_cluster_to_free_space(
 	return ret;
 }
 
-static u64 btrfs_alloc_from_bitmap(struct btrfs_block_group_cache *block_group,
+static u64 btrfs_alloc_from_bitmap(struct btrfs_block_group *block_group,
 				   struct btrfs_free_cluster *cluster,
 				   struct btrfs_free_space *entry,
 				   u64 bytes, u64 min_start,
@@ -2746,7 +2745,7 @@ static u64 btrfs_alloc_from_bitmap(struct btrfs_block_group_cache *block_group,
  * if it couldn't find anything suitably large, or a logical disk offset
  * if things worked out
  */
-u64 btrfs_alloc_from_cluster(struct btrfs_block_group_cache *block_group,
+u64 btrfs_alloc_from_cluster(struct btrfs_block_group *block_group,
 			     struct btrfs_free_cluster *cluster, u64 bytes,
 			     u64 min_start, u64 *max_extent_size)
 {
@@ -2832,7 +2831,7 @@ out:
 	return ret;
 }
 
-static int btrfs_bitmap_cluster(struct btrfs_block_group_cache *block_group,
+static int btrfs_bitmap_cluster(struct btrfs_block_group *block_group,
 				struct btrfs_free_space *entry,
 				struct btrfs_free_cluster *cluster,
 				u64 offset, u64 bytes,
@@ -2914,7 +2913,7 @@ again:
  * extent of cont1_bytes, and other clusters of at least min_bytes.
  */
 static noinline int
-setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
+setup_cluster_no_bitmap(struct btrfs_block_group *block_group,
 			struct btrfs_free_cluster *cluster,
 			struct list_head *bitmaps, u64 offset, u64 bytes,
 			u64 cont1_bytes, u64 min_bytes)
@@ -3005,7 +3004,7 @@ setup_cluster_no_bitmap(struct btrfs_block_group_cache *block_group,
  * that we have already failed to find extents that will work.
  */
 static noinline int
-setup_cluster_bitmap(struct btrfs_block_group_cache *block_group,
+setup_cluster_bitmap(struct btrfs_block_group *block_group,
 		     struct btrfs_free_cluster *cluster,
 		     struct list_head *bitmaps, u64 offset, u64 bytes,
 		     u64 cont1_bytes, u64 min_bytes)
@@ -3055,7 +3054,7 @@ setup_cluster_bitmap(struct btrfs_block_group_cache *block_group,
  * returns zero and sets up cluster if things worked out, otherwise
  * it returns -enospc
  */
-int btrfs_find_space_cluster(struct btrfs_block_group_cache *block_group,
+int btrfs_find_space_cluster(struct btrfs_block_group *block_group,
 			     struct btrfs_free_cluster *cluster,
 			     u64 offset, u64 bytes, u64 empty_size)
 {
@@ -3146,7 +3145,7 @@ void btrfs_init_free_cluster(struct btrfs_free_cluster *cluster)
 	cluster->block_group = NULL;
 }
 
-static int do_trimming(struct btrfs_block_group_cache *block_group,
+static int do_trimming(struct btrfs_block_group *block_group,
 		       u64 *total_trimmed, u64 start, u64 bytes,
 		       u64 reserved_start, u64 reserved_bytes,
 		       struct btrfs_trim_range *trim_entry)
@@ -3191,7 +3190,7 @@ static int do_trimming(struct btrfs_block_group_cache *block_group,
 	return ret;
 }
 
-static int trim_no_bitmap(struct btrfs_block_group_cache *block_group,
+static int trim_no_bitmap(struct btrfs_block_group *block_group,
 			  u64 *total_trimmed, u64 start, u64 end, u64 minlen)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
@@ -3276,7 +3275,7 @@ out:
 	return ret;
 }
 
-static int trim_bitmaps(struct btrfs_block_group_cache *block_group,
+static int trim_bitmaps(struct btrfs_block_group *block_group,
 			u64 *total_trimmed, u64 start, u64 end, u64 minlen)
 {
 	struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl;
@@ -3357,12 +3356,12 @@ next:
 	return ret;
 }
 
-void btrfs_get_block_group_trimming(struct btrfs_block_group_cache *cache)
+void btrfs_get_block_group_trimming(struct btrfs_block_group *cache)
 {
 	atomic_inc(&cache->trimming);
 }
 
-void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *block_group)
+void btrfs_put_block_group_trimming(struct btrfs_block_group *block_group)
 {
 	struct btrfs_fs_info *fs_info = block_group->fs_info;
 	struct extent_map_tree *em_tree;
@@ -3397,7 +3396,7 @@ void btrfs_put_block_group_trimming(struct btrfs_block_group_cache *block_group)
 	}
 }
 
-int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
+int btrfs_trim_block_group(struct btrfs_block_group *block_group,
 			   u64 *trimmed, u64 start, u64 end, u64 minlen)
 {
 	int ret;
@@ -3595,7 +3594,7 @@ int btrfs_write_out_ino_cache(struct btrfs_root *root,
  * how the free space cache loading stuff works, so you can get really weird
  * configurations.
  */
-int test_add_free_space_entry(struct btrfs_block_group_cache *cache,
+int test_add_free_space_entry(struct btrfs_block_group *cache,
 			      u64 offset, u64 bytes, bool bitmap)
 {
 	struct btrfs_free_space_ctl *ctl = cache->free_space_ctl;
@@ -3663,7 +3662,7 @@ again:
  * just used to check the absence of space, so if there is free space in the
  * range at all we will return 1.
  */
-int test_check_exists(struct btrfs_block_group_cache *cache,
+int test_check_exists(struct btrfs_block_group *cache,
 		      u64 offset, u64 bytes)
 {
 	struct btrfs_free_space_ctl *ctl = cache->free_space_ctl;