From e6160e469f56a23cb69e1dc37aa0d895bf29ac24 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Mon, 9 Dec 2019 11:08:34 +0000
Subject: [PATCH] fs/adfs: map: rename adfs_map_free() to adfs_map_statfs()

adfs_map_free() is not obvious whether it is freeing the map or
returning the number of free blocks on the filesystem.  Rename it to
the more generic statfs() to make it clear that it's a statistic
function.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/adfs/adfs.h  |  2 +-
 fs/adfs/map.c   | 10 +++++++---
 fs/adfs/super.c |  7 ++-----
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index d23c84aeb6dd..45fd48fbd5e0 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -145,7 +145,7 @@ int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
 
 /* map.c */
 int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset);
-extern unsigned int adfs_map_free(struct super_block *sb);
+void adfs_map_statfs(struct super_block *sb, struct kstatfs *buf);
 struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_discrecord *dr);
 
 /* Misc */
diff --git a/fs/adfs/map.c b/fs/adfs/map.c
index 120e01451e75..c322d37e8f91 100644
--- a/fs/adfs/map.c
+++ b/fs/adfs/map.c
@@ -5,6 +5,7 @@
  *  Copyright (C) 1997-2002 Russell King
  */
 #include <linux/slab.h>
+#include <linux/statfs.h>
 #include <asm/unaligned.h>
 #include "adfs.h"
 
@@ -221,10 +222,10 @@ static int scan_map(struct adfs_sb_info *asb, unsigned int zone,
  *  total_free = E(free_in_zone_n)
  *              nzones
  */
-unsigned int
-adfs_map_free(struct super_block *sb)
+void adfs_map_statfs(struct super_block *sb, struct kstatfs *buf)
 {
 	struct adfs_sb_info *asb = ADFS_SB(sb);
+	struct adfs_discrecord *dr = adfs_map_discrecord(asb->s_map);
 	struct adfs_discmap *dm;
 	unsigned int total = 0;
 	unsigned int zone;
@@ -236,7 +237,10 @@ adfs_map_free(struct super_block *sb)
 		total += scan_free_map(asb, dm++);
 	} while (--zone > 0);
 
-	return signed_asl(total, asb->s_map2blk);
+	buf->f_blocks  = adfs_disc_size(dr) >> sb->s_blocksize_bits;
+	buf->f_files   = asb->s_ids_per_zone * asb->s_map_size;
+	buf->f_bavail  =
+	buf->f_bfree   = signed_asl(total, asb->s_map2blk);
 }
 
 int adfs_map_lookup(struct super_block *sb, u32 frag_id, unsigned int offset)
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 4091adb2c7ff..458824e0ca83 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -204,16 +204,13 @@ static int adfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
 	struct super_block *sb = dentry->d_sb;
 	struct adfs_sb_info *sbi = ADFS_SB(sb);
-	struct adfs_discrecord *dr = adfs_map_discrecord(sbi->s_map);
 	u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
 
+	adfs_map_statfs(sb, buf);
+
 	buf->f_type    = ADFS_SUPER_MAGIC;
 	buf->f_namelen = sbi->s_namelen;
 	buf->f_bsize   = sb->s_blocksize;
-	buf->f_blocks  = adfs_disc_size(dr) >> sb->s_blocksize_bits;
-	buf->f_files   = sbi->s_ids_per_zone * sbi->s_map_size;
-	buf->f_bavail  =
-	buf->f_bfree   = adfs_map_free(sb);
 	buf->f_ffree   = (long)(buf->f_bfree * buf->f_files) / (long)buf->f_blocks;
 	buf->f_fsid.val[0] = (u32)id;
 	buf->f_fsid.val[1] = (u32)(id >> 32);