Added text to note that start and size are both rounded downwards.

1 files changed, 14 insertions, 0 deletions

diff --git a/man2/remap_file_pages.2 b/man2/remap_file_pages.2
index 5999fb7d..766e991a 100644
--- a/man2/remap_file_pages.2
+++ b/man2/remap_file_pages.2
@@ -88,6 +88,20 @@ and
 .I size
 will be placed.
 
+The values specified in
+.I start
+and
+.I size
+should be multiples of the system page size.
+If they are not, then the kernel rounds
+.I both 
+values 
+.I down
+to the nearest multiple of the page size.
+.\" This rounding is weird, and not consistent with the treatment of 
+.\" the analogous arguments for munmap()/mprotect() and for mlock().  
+.\" MTK, 14 Sep 2005
+
 The
 .I prot
 argument must be specified as 0.