fs/hfs: return f_fsid for statfs(2)

Make hfs return f_fsid info for statfs(2).

Signed-off-by: Coly Li <coly.li@suse.de>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index c8b5acf4b0b7..a36bb749926d 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -82,6 +82,7 @@ static void hfs_put_super(struct super_block *sb)
 static int hfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
         struct super_block *sb = dentry->d_sb;
+        u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
 
         buf->f_type = HFS_SUPER_MAGIC;
         buf->f_bsize = sb->s_blocksize;
@@ -90,6 +91,8 @@ static int hfs_statfs(struct dentry *dentry, struct kstatfs *buf)
         buf->f_bavail = buf->f_bfree;
         buf->f_files = HFS_SB(sb)->fs_ablocks;
         buf->f_ffree = HFS_SB(sb)->free_ablocks;
+        buf->f_fsid.val[0] = (u32)id;
+        buf->f_fsid.val[1] = (u32)(id >> 32);
         buf->f_namelen = HFS_NAMELEN;
 
         return 0;