LU-2904 llite: return valid fsid for statfs

[fs/lustre-release.git] / lustre / llite / llite_nfs.c

diff --git a/lustre/llite/llite_nfs.c b/lustre/llite/llite_nfs.c
index f840e23..fe1a90c 100644 (file)
--- a/lustre/llite/llite_nfs.c
+++ b/lustre/llite/llite_nfs.c
@@ -60,6 +60,22 @@ __u32 get_uuid2int(const char *name, int len)
         return (key0 << 1);
 }
 
+void get_uuid2fsid(const char *name, int len, __kernel_fsid_t *fsid)
+{
+       __u64 key = 0, key0 = 0x12a3fe2d, key1 = 0x37abe8f9;
+
+       while (len--) {
+               key = key1 + (key0 ^ (*name++ * 7152373));
+               if (key & 0x8000000000000000ULL)
+                       key -= 0x7fffffffffffffffULL;
+               key1 = key0;
+               key0 = key;
+       }
+
+       fsid->val[0] = key;
+       fsid->val[1] = key >> 32;
+}
+
 static int ll_nfs_test_inode(struct inode *inode, void *opaque)
 {
         return lu_fid_eq(&ll_i2info(inode)->lli_fid,