udf: return f_fsid for statfs(2)

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

Signed-off-by: Coly Li <coly.li@suse.de>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 3c2d35d..4457da0 100644 (file)
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -2132,6 +2132,7 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
        struct super_block *sb = dentry->d_sb;
        struct udf_sb_info *sbi = UDF_SB(sb);
        struct logicalVolIntegrityDescImpUse *lvidiu;
+       u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
 
        if (sbi->s_lvid_bh != NULL)
                lvidiu = udf_sb_lvidiu(sbi);
@@ -2147,8 +2148,9 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
                                          le32_to_cpu(lvidiu->numDirs)) : 0)
                        + buf->f_bfree;
        buf->f_ffree = buf->f_bfree;
-       /* __kernel_fsid_t f_fsid */
        buf->f_namelen = UDF_NAME_LEN - 2;
+       buf->f_fsid.val[0] = (u32)id;
+       buf->f_fsid.val[1] = (u32)(id >> 32);
 
        return 0;
 }