linux-kernel - [PATCH 4/20] fs/cramfs: return f

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Date:	Tue, 20 Jan 2009 01:32:15 +0800
From:	Coly Li <coly.li@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 4/20] fs/cramfs: return f_fsid for statfs(2)

This patch makes cramfs return f_fsid info for statfs(2).

Signed-off-by: Coly Li <coly.li@...e.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 fs/cramfs/inode.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index a07338d..1cb64ac 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -318,6 +318,7 @@ out:
 static int cramfs_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 = CRAMFS_MAGIC;
 	buf->f_bsize = PAGE_CACHE_SIZE;
@@ -326,6 +327,8 @@ static int cramfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	buf->f_bavail = 0;
 	buf->f_files = CRAMFS_SB(sb)->files;
 	buf->f_ffree = 0;
+	buf->f_fsid.val[0] = (u32)id;
+	buf->f_fsid.val[1] = (u32)(id >> 32);
 	buf->f_namelen = CRAMFS_MAXPATHLEN;
 	return 0;
 }

-- 
Coly Li
SuSE Labs



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