mm: check that we haven't used more than 32 bits in address_space.flags

[deliverable/linux.git] / include / linux / pagemap.h

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 2f5a65ddbebfeba28e0768d82427621db1a58bd9..08937bd2c11bba0a3da8b852e326e5a7133bda48 100644 (file)
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -27,6 +27,8 @@ enum mapping_flags {
        AS_EXITING      = __GFP_BITS_SHIFT + 4, /* final truncate in progress */
        /* writeback related tags are not used */
        AS_NO_WRITEBACK_TAGS = __GFP_BITS_SHIFT + 5,
+
+       AS_LAST_FLAG,
 };
 
 static inline void mapping_set_error(struct address_space *mapping, int error)