From: Coly Li <coly.li@suse.de>
Date: Tue, 7 Apr 2009 02:01:12 +0000 (-0700)
Subject: fs/romfs: return f_fsid for statfs(2)
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8a59f5d2526593c6bc1a0754c3a16ccc9ed41ce3;p=deliverable%2Flinux.git

fs/romfs: return f_fsid for statfs(2)

Make romfs return f_fsid info for statfs(2).

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

diff --git a/fs/romfs/super.c b/fs/romfs/super.c
index 1e548a4975ba..10ca7d984a8b 100644
--- a/fs/romfs/super.c
+++ b/fs/romfs/super.c
@@ -408,12 +408,17 @@ static void romfs_destroy_inode(struct inode *inode)
  */
 static int romfs_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 = ROMFS_MAGIC;
 	buf->f_namelen = ROMFS_MAXFN;
 	buf->f_bsize = ROMBSIZE;
 	buf->f_bfree = buf->f_bavail = buf->f_ffree;
 	buf->f_blocks =
 		(romfs_maxsize(dentry->d_sb) + ROMBSIZE - 1) >> ROMBSBITS;
+	buf->f_fsid.val[0] = (u32)id;
+	buf->f_fsid.val[1] = (u32)(id >> 32);
 	return 0;
 }