btrfs: move flush related definitions to space-info.h

This code is used in space-info.c, move the definitions to space-info.h.
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/ctree.h

@@ -2639,65 +2639,6 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
 
 void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
 
-/*
- * Different levels for to flush space when doing space reservations.
- *
- * The higher the level, the more methods we try to reclaim space.
- */
-enum btrfs_reserve_flush_enum {
-	/* If we are in the transaction, we can't flush anything.*/
-	BTRFS_RESERVE_NO_FLUSH,
-
-	/*
-	 * Flush space by:
-	 * - Running delayed inode items
-	 * - Allocating a new chunk
-	 */
-	BTRFS_RESERVE_FLUSH_LIMIT,
-
-	/*
-	 * Flush space by:
-	 * - Running delayed inode items
-	 * - Running delayed refs
-	 * - Running delalloc and waiting for ordered extents
-	 * - Allocating a new chunk
-	 */
-	BTRFS_RESERVE_FLUSH_EVICT,
-
-	/*
-	 * Flush space by above mentioned methods and by:
-	 * - Running delayed iputs
-	 * - Committing transaction
-	 *
-	 * Can be interrupted by a fatal signal.
-	 */
-	BTRFS_RESERVE_FLUSH_DATA,
-	BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE,
-	BTRFS_RESERVE_FLUSH_ALL,
-
-	/*
-	 * Pretty much the same as FLUSH_ALL, but can also steal space from
-	 * global rsv.
-	 *
-	 * Can be interrupted by a fatal signal.
-	 */
-	BTRFS_RESERVE_FLUSH_ALL_STEAL,
-};
-
-enum btrfs_flush_state {
-	FLUSH_DELAYED_ITEMS_NR	=	1,
-	FLUSH_DELAYED_ITEMS	=	2,
-	FLUSH_DELAYED_REFS_NR	=	3,
-	FLUSH_DELAYED_REFS	=	4,
-	FLUSH_DELALLOC		=	5,
-	FLUSH_DELALLOC_WAIT	=	6,
-	FLUSH_DELALLOC_FULL	=	7,
-	ALLOC_CHUNK		=	8,
-	ALLOC_CHUNK_FORCE	=	9,
-	RUN_DELAYED_IPUTS	=	10,
-	COMMIT_TRANS		=	11,
-};
-
 int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,
 				     struct btrfs_block_rsv *rsv,
 				     int nitems, bool use_global_rsv);

fs/btrfs/delayed-inode.c

@@ -14,6 +14,7 @@
 #include "qgroup.h"
 #include "locking.h"
 #include "inode-item.h"
+#include "space-info.h"
 
 #define BTRFS_DELAYED_WRITEBACK		512
 #define BTRFS_DELAYED_BACKGROUND	128

fs/btrfs/inode-item.c

@@ -8,6 +8,7 @@
 #include "disk-io.h"
 #include "transaction.h"
 #include "print-tree.h"
+#include "space-info.h"
 
 struct btrfs_inode_ref *btrfs_find_name_in_backref(struct extent_buffer *leaf,
 						   int slot, const char *name,

fs/btrfs/props.c

@@ -10,6 +10,7 @@
 #include "ctree.h"
 #include "xattr.h"
 #include "compression.h"
+#include "space-info.h"
 
 #define BTRFS_PROP_HANDLERS_HT_BITS 8
 static DEFINE_HASHTABLE(prop_handlers_ht, BTRFS_PROP_HANDLERS_HT_BITS);

fs/btrfs/relocation.c

@@ -27,6 +27,7 @@
 #include "subpage.h"
 #include "zoned.h"
 #include "inode-item.h"
+#include "space-info.h"
 
 /*
  * Relocation overview

fs/btrfs/space-info.h

@@ -5,6 +5,65 @@
 
 #include "volumes.h"
 
+/*
+ * Different levels for to flush space when doing space reservations.
+ *
+ * The higher the level, the more methods we try to reclaim space.
+ */
+enum btrfs_reserve_flush_enum {
+	/* If we are in the transaction, we can't flush anything.*/
+	BTRFS_RESERVE_NO_FLUSH,
+
+	/*
+	 * Flush space by:
+	 * - Running delayed inode items
+	 * - Allocating a new chunk
+	 */
+	BTRFS_RESERVE_FLUSH_LIMIT,
+
+	/*
+	 * Flush space by:
+	 * - Running delayed inode items
+	 * - Running delayed refs
+	 * - Running delalloc and waiting for ordered extents
+	 * - Allocating a new chunk
+	 */
+	BTRFS_RESERVE_FLUSH_EVICT,
+
+	/*
+	 * Flush space by above mentioned methods and by:
+	 * - Running delayed iputs
+	 * - Committing transaction
+	 *
+	 * Can be interrupted by a fatal signal.
+	 */
+	BTRFS_RESERVE_FLUSH_DATA,
+	BTRFS_RESERVE_FLUSH_FREE_SPACE_INODE,
+	BTRFS_RESERVE_FLUSH_ALL,
+
+	/*
+	 * Pretty much the same as FLUSH_ALL, but can also steal space from
+	 * global rsv.
+	 *
+	 * Can be interrupted by a fatal signal.
+	 */
+	BTRFS_RESERVE_FLUSH_ALL_STEAL,
+};
+
+enum btrfs_flush_state {
+	FLUSH_DELAYED_ITEMS_NR	= 1,
+	FLUSH_DELAYED_ITEMS	= 2,
+	FLUSH_DELAYED_REFS_NR	= 3,
+	FLUSH_DELAYED_REFS	= 4,
+	FLUSH_DELALLOC		= 5,
+	FLUSH_DELALLOC_WAIT	= 6,
+	FLUSH_DELALLOC_FULL	= 7,
+	ALLOC_CHUNK		= 8,
+	ALLOC_CHUNK_FORCE	= 9,
+	RUN_DELAYED_IPUTS	= 10,
+	COMMIT_TRANS		= 11,
+};
+
 struct btrfs_space_info {
 	spinlock_t lock;