inode_table: make the inode table resizable

[wimlib] / include / wimlib / bitops.h

diff --git a/include/wimlib/bitops.h b/include/wimlib/bitops.h
index 191e95a10f7d537eb215cddfa90914adbe94f334..14c73593521b8bbba6a5646058d7f21500b534af 100644 (file)
--- a/include/wimlib/bitops.h
+++ b/include/wimlib/bitops.h
@@ -89,4 +89,14 @@ ffsw(machine_word_t v)
                return ffs64(v);
 }
 
+/* Round up to nearest power of 2  */
+
+static inline size_t
+roundup_pow_of_2(size_t n)
+{
+       if (n <= 1)
+               return 1;
+       return (size_t)1 << (1 + flsw(n - 1));
+}
+
 #endif /* _WIMLIB_BITOPS_H */