btrfs: move math functions to misc.h

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/block-group.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include "misc.h"
 #include "ctree.h"
 #include "block-group.h"
 #include "space-info.h"
@@ -13,7 +14,6 @@
 #include "sysfs.h"
 #include "tree-log.h"
 #include "delalloc-space.h"
-#include "math.h"
 
 /*
  * Return target flags in extended format or 0 if restripe for this chunk_type

fs/btrfs/block-rsv.c

@@ -1,9 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include "misc.h"
 #include "ctree.h"
 #include "block-rsv.h"
 #include "space-info.h"
-#include "math.h"
 #include "transaction.h"
 
 static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,

fs/btrfs/extent-tree.c

@@ -25,7 +25,6 @@
 #include "locking.h"
 #include "free-space-cache.h"
 #include "free-space-tree.h"
-#include "math.h"
 #include "sysfs.h"
 #include "qgroup.h"
 #include "ref-verify.h"

fs/btrfs/math.h

@@ -1,28 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2012 Fujitsu.  All rights reserved.
- * Written by Miao Xie <miaox@cn.fujitsu.com>
- */
-
-#ifndef BTRFS_MATH_H
-#define BTRFS_MATH_H
-
-#include <asm/div64.h>
-
-static inline u64 div_factor(u64 num, int factor)
-{
-	if (factor == 10)
-		return num;
-	num *= factor;
-	return div_u64(num, 10);
-}
-
-static inline u64 div_factor_fine(u64 num, int factor)
-{
-	if (factor == 100)
-		return num;
-	num *= factor;
-	return div_u64(num, 100);
-}
-
-#endif

fs/btrfs/misc.h

@@ -5,6 +5,7 @@
 
 #include <linux/sched.h>
 #include <linux/wait.h>
+#include <asm/div64.h>
 
 #define in_range(b, first, len) ((b) >= (first) && (b) < (first) + (len))
 
@@ -30,4 +31,20 @@ static inline void cond_wake_up_nomb(struct wait_queue_head *wq)
 		wake_up(wq);
 }
 
+static inline u64 div_factor(u64 num, int factor)
+{
+	if (factor == 10)
+		return num;
+	num *= factor;
+	return div_u64(num, 10);
+}
+
+static inline u64 div_factor_fine(u64 num, int factor)
+{
+	if (factor == 100)
+		return num;
+	num *= factor;
+	return div_u64(num, 100);
+}
+
 #endif

fs/btrfs/space-info.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#include "misc.h"
 #include "ctree.h"
 #include "space-info.h"
 #include "sysfs.h"
@@ -7,7 +8,6 @@
 #include "free-space-cache.h"
 #include "ordered-data.h"
 #include "transaction.h"
-#include "math.h"
 #include "block-group.h"
 
 u64 btrfs_space_info_used(struct btrfs_space_info *s_info,

fs/btrfs/volumes.c

@@ -14,6 +14,7 @@
 #include <linux/semaphore.h>
 #include <linux/uuid.h>
 #include <linux/list_sort.h>
+#include "misc.h"
 #include "ctree.h"
 #include "extent_map.h"
 #include "disk-io.h"
@@ -24,7 +25,6 @@
 #include "async-thread.h"
 #include "check-integrity.h"
 #include "rcu-string.h"
-#include "math.h"
 #include "dev-replace.h"
 #include "sysfs.h"
 #include "tree-checker.h"