btrfs: move the space info update macro to space-info.h

Also rename it to btrfs_space_info_update_* so it's clear what we're
updating.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/extent-tree.c

@@ -32,26 +32,6 @@
 
 #undef SCRAMBLE_DELAYED_REFS
 
-/*
- * Declare a helper function to detect underflow of various space info members
- */
-#define DECLARE_SPACE_INFO_UPDATE(name)					\
-static inline void update_##name(struct btrfs_fs_info *fs_info,		\
-				 struct btrfs_space_info *sinfo,	\
-				 s64 bytes)				\
-{									\
-	lockdep_assert_held(&sinfo->lock);				\
-	trace_update_##name(fs_info, sinfo, sinfo->name, bytes);	\
-	if (bytes < 0 && sinfo->name < -bytes) {			\
-		WARN_ON(1);						\
-		sinfo->name = 0;					\
-		return;							\
-	}								\
-	sinfo->name += bytes;						\
-}
-
-DECLARE_SPACE_INFO_UPDATE(bytes_may_use);
-DECLARE_SPACE_INFO_UPDATE(bytes_pinned);
 
 static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
 			       struct btrfs_delayed_ref_node *node, u64 parent,
@@ -4054,7 +4034,7 @@ int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes)
 					      data_sinfo->flags, bytes, 1);
 		return -ENOSPC;
 	}
-	update_bytes_may_use(fs_info, data_sinfo, bytes);
+	btrfs_space_info_update_bytes_may_use(fs_info, data_sinfo, bytes);
 	trace_btrfs_space_reservation(fs_info, "space_info",
 				      data_sinfo->flags, bytes, 1);
 	spin_unlock(&data_sinfo->lock);
@@ -4107,7 +4087,7 @@ void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start,
 
 	data_sinfo = fs_info->data_sinfo;
 	spin_lock(&data_sinfo->lock);
-	update_bytes_may_use(fs_info, data_sinfo, -len);
+	btrfs_space_info_update_bytes_may_use(fs_info, data_sinfo, -len);
 	trace_btrfs_space_reservation(fs_info, "space_info",
 				      data_sinfo->flags, len, 0);
 	spin_unlock(&data_sinfo->lock);
@@ -4947,13 +4927,15 @@ static int __reserve_metadata_bytes(struct btrfs_fs_info *fs_info,
 	 * If not things get more complicated.
 	 */
 	if (used + orig_bytes <= space_info->total_bytes) {
-		update_bytes_may_use(fs_info, space_info, orig_bytes);
+		btrfs_space_info_update_bytes_may_use(fs_info, space_info,
+						      orig_bytes);
 		trace_btrfs_space_reservation(fs_info, "space_info",
 					      space_info->flags, orig_bytes, 1);
 		ret = 0;
 	} else if (btrfs_can_overcommit(fs_info, space_info, orig_bytes, flush,
 					system_chunk)) {
-		update_bytes_may_use(fs_info, space_info, orig_bytes);
+		btrfs_space_info_update_bytes_may_use(fs_info, space_info,
+						      orig_bytes);
 		trace_btrfs_space_reservation(fs_info, "space_info",
 					      space_info->flags, orig_bytes, 1);
 		ret = 0;
@@ -5282,7 +5264,7 @@ void btrfs_space_info_add_old_bytes(struct btrfs_fs_info *fs_info,
 		flush = BTRFS_RESERVE_FLUSH_ALL;
 		goto again;
 	}
-	update_bytes_may_use(fs_info, space_info, -num_bytes);
+	btrfs_space_info_update_bytes_may_use(fs_info, space_info, -num_bytes);
 	trace_btrfs_space_reservation(fs_info, "space_info",
 				      space_info->flags, num_bytes, 0);
 	spin_unlock(&space_info->lock);
@@ -5310,8 +5292,8 @@ void btrfs_space_info_add_new_bytes(struct btrfs_fs_info *fs_info,
 						      ticket->bytes, 1);
 			list_del_init(&ticket->list);
 			num_bytes -= ticket->bytes;
-			update_bytes_may_use(fs_info, space_info,
-					     ticket->bytes);
+			btrfs_space_info_update_bytes_may_use(fs_info,
+					space_info, ticket->bytes);
 			ticket->bytes = 0;
 			space_info->tickets_id++;
 			wake_up(&ticket->wait);
@@ -5319,7 +5301,8 @@ void btrfs_space_info_add_new_bytes(struct btrfs_fs_info *fs_info,
 			trace_btrfs_space_reservation(fs_info, "space_info",
 						      space_info->flags,
 						      num_bytes, 1);
-			update_bytes_may_use(fs_info, space_info, num_bytes);
+			btrfs_space_info_update_bytes_may_use(fs_info,
+					space_info, num_bytes);
 			ticket->bytes -= num_bytes;
 			num_bytes = 0;
 		}
@@ -5612,14 +5595,16 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
 			num_bytes = min(num_bytes,
 					block_rsv->size - block_rsv->reserved);
 			block_rsv->reserved += num_bytes;
-			update_bytes_may_use(fs_info, sinfo, num_bytes);
+			btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
+							      num_bytes);
 			trace_btrfs_space_reservation(fs_info, "space_info",
 						      sinfo->flags, num_bytes,
 						      1);
 		}
 	} else if (block_rsv->reserved > block_rsv->size) {
 		num_bytes = block_rsv->reserved - block_rsv->size;
-		update_bytes_may_use(fs_info, sinfo, -num_bytes);
+		btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
+						      -num_bytes);
 		trace_btrfs_space_reservation(fs_info, "space_info",
 				      sinfo->flags, num_bytes, 0);
 		block_rsv->reserved = block_rsv->size;
@@ -6082,7 +6067,8 @@ static int update_block_group(struct btrfs_trans_handle *trans,
 			old_val -= num_bytes;
 			btrfs_set_block_group_used(&cache->item, old_val);
 			cache->pinned += num_bytes;
-			update_bytes_pinned(info, cache->space_info, num_bytes);
+			btrfs_space_info_update_bytes_pinned(info,
+					cache->space_info, num_bytes);
 			cache->space_info->bytes_used -= num_bytes;
 			cache->space_info->disk_used -= num_bytes * factor;
 			spin_unlock(&cache->lock);
@@ -6157,7 +6143,8 @@ static int pin_down_extent(struct btrfs_block_group_cache *cache,
 	spin_lock(&cache->space_info->lock);
 	spin_lock(&cache->lock);
 	cache->pinned += num_bytes;
-	update_bytes_pinned(fs_info, cache->space_info, num_bytes);
+	btrfs_space_info_update_bytes_pinned(fs_info, cache->space_info,
+					     num_bytes);
 	if (reserved) {
 		cache->reserved -= num_bytes;
 		cache->space_info->bytes_reserved -= num_bytes;
@@ -6366,7 +6353,8 @@ static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache,
 	} else {
 		cache->reserved += num_bytes;
 		space_info->bytes_reserved += num_bytes;
-		update_bytes_may_use(cache->fs_info, space_info, -ram_bytes);
+		btrfs_space_info_update_bytes_may_use(cache->fs_info,
+						      space_info, -ram_bytes);
 		if (delalloc)
 			cache->delalloc_bytes += num_bytes;
 	}
@@ -6522,7 +6510,7 @@ static int unpin_extent_range(struct btrfs_fs_info *fs_info,
 		spin_lock(&space_info->lock);
 		spin_lock(&cache->lock);
 		cache->pinned -= len;
-		update_bytes_pinned(fs_info, space_info, -len);
+		btrfs_space_info_update_bytes_pinned(fs_info, space_info, -len);
 
 		trace_btrfs_space_reservation(fs_info, "pinned",
 					      space_info->flags, len, 0);
@@ -6543,8 +6531,8 @@ static int unpin_extent_range(struct btrfs_fs_info *fs_info,
 				to_add = min(len, global_rsv->size -
 					     global_rsv->reserved);
 				global_rsv->reserved += to_add;
-				update_bytes_may_use(fs_info, space_info,
-						     to_add);
+				btrfs_space_info_update_bytes_may_use(fs_info,
+						space_info, to_add);
 				if (global_rsv->reserved >= global_rsv->size)
 					global_rsv->full = 1;
 				trace_btrfs_space_reservation(fs_info,
@@ -10831,7 +10819,8 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info)
 		spin_lock(&space_info->lock);
 		spin_lock(&block_group->lock);
 
-		update_bytes_pinned(fs_info, space_info, -block_group->pinned);
+		btrfs_space_info_update_bytes_pinned(fs_info, space_info,
+						     -block_group->pinned);
 		space_info->bytes_readonly += block_group->pinned;
 		percpu_counter_add_batch(&space_info->total_bytes_pinned,
 				   -block_group->pinned,

fs/btrfs/space-info.h

@@ -75,6 +75,29 @@ static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
 		(space_info->flags & BTRFS_BLOCK_GROUP_DATA));
 }
 
+/*
+ *
+ * Declare a helper function to detect underflow of various space info members
+ */
+#define DECLARE_SPACE_INFO_UPDATE(name)					\
+static inline void							\
+btrfs_space_info_update_##name(struct btrfs_fs_info *fs_info,		\
+			       struct btrfs_space_info *sinfo,		\
+			       s64 bytes)				\
+{									\
+	lockdep_assert_held(&sinfo->lock);				\
+	trace_update_##name(fs_info, sinfo, sinfo->name, bytes);	\
+	if (bytes < 0 && sinfo->name < -bytes) {			\
+		WARN_ON(1);						\
+		sinfo->name = 0;					\
+		return;							\
+	}								\
+	sinfo->name += bytes;						\
+}
+
+DECLARE_SPACE_INFO_UPDATE(bytes_may_use);
+DECLARE_SPACE_INFO_UPDATE(bytes_pinned);
+
 void btrfs_space_info_add_new_bytes(struct btrfs_fs_info *fs_info,
 				    struct btrfs_space_info *space_info,
 				    u64 num_bytes);