linux-kernel - [PATCH 1/20] fs/adfs: return f

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Date:	Tue, 20 Jan 2009 01:31:19 +0800
From:	Coly Li <coly.li@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 1/20] fs/adfs: return f_fsid for statfs(2)

This patch makes adfs return f_fsid info for statfs(2), and does a little variable renaming in
adfs_statfs().

Signed-off-by: Coly Li <coly.li@...e.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 fs/adfs/super.c |   16 ++++++++++------
 1 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 7f83a46..dd9becc 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -219,16 +219,20 @@ static int adfs_remount(struct super_block *sb, int *flags, char *data)

 static int adfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
-	struct adfs_sb_info *asb = ADFS_SB(dentry->d_sb);
+	struct super_block *sb = dentry->d_sb;
+	struct adfs_sb_info *sbi = ADFS_SB(sb);
+	u64 id = huge_encode_dev(sb->s_bdev->bd_dev);

 	buf->f_type    = ADFS_SUPER_MAGIC;
-	buf->f_namelen = asb->s_namelen;
-	buf->f_bsize   = dentry->d_sb->s_blocksize;
-	buf->f_blocks  = asb->s_size;
-	buf->f_files   = asb->s_ids_per_zone * asb->s_map_size;
+	buf->f_namelen = sbi->s_namelen;
+	buf->f_bsize   = sb->s_blocksize;
+	buf->f_blocks  = sbi->s_size;
+	buf->f_files   = sbi->s_ids_per_zone * sbi->s_map_size;
 	buf->f_bavail  =
-	buf->f_bfree   = adfs_map_free(dentry->d_sb);
+	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);

 	return 0;
 }

-- 
Coly Li
SuSE Labs



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