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-rw-r--r--libc/sysdeps/linux/common/mmap64.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/mmap64.c b/libc/sysdeps/linux/common/mmap64.c
index 9f7ae75f3..152e7296b 100644
--- a/libc/sysdeps/linux/common/mmap64.c
+++ b/libc/sysdeps/linux/common/mmap64.c
@@ -53,7 +53,10 @@ __ptr_t mmap64(__ptr_t addr, size_t len, int prot, int flags, int fd, __off64_t
static inline _syscall6(__ptr_t, __syscall_mmap2, __ptr_t, addr,
size_t, len, int, prot, int, flags, int, fd, off_t, offset);
-/* This is always 12, even on architectures where PAGE_SHIFT != 12. */
+/* Some architectures always use 12 as page shift for mmap2() eventhough the
+ * real PAGE_SHIFT != 12. Other architectures use the same value as
+ * PAGE_SHIFT...
+ */
# ifndef MMAP2_PAGE_SHIFT
# define MMAP2_PAGE_SHIFT 12
# endif