UBIFS: amend f_fsid

David Woodhouse suggested to be consistent with other FSes
and xor the beginning and the end of the UUID.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 0dee404..7562464 100644 (file)
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -370,6 +370,7 @@ static int ubifs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
        struct ubifs_info *c = dentry->d_sb->s_fs_info;
        unsigned long long free;
+       __le32 *uuid = (__le32 *)c->uuid;
 
        free = ubifs_get_free_space(c);
        dbg_gen("free space %lld bytes (%lld blocks)",
@@ -386,8 +387,8 @@ static int ubifs_statfs(struct dentry *dentry, struct kstatfs *buf)
        buf->f_files = 0;
        buf->f_ffree = 0;
        buf->f_namelen = UBIFS_MAX_NLEN;
-       memcpy(&buf->f_fsid, c->uuid, sizeof(__kernel_fsid_t));
-
+       buf->f_fsid.val[0] = le32_to_cpu(uuid[0]) ^ le32_to_cpu(uuid[2]);
+       buf->f_fsid.val[1] = le32_to_cpu(uuid[1]) ^ le32_to_cpu(uuid[3]);
        return 0;
 }