X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Documentation%2Fnommu-mmap.txt;h=7714f57caad5b4312e7289761c0561c68b822049;hb=9780eb6cfaf7d2d5ccc061eaf94e7aec6a17791e;hp=4db7c18bf68c4e79fcfdcbc8f760bca9482706df;hpb=0112c4c6461fed12ed9bcb249f967bc17a23f6c4;p=linux-2.6

diff --git a/Documentation/nommu-mmap.txt b/Documentation/nommu-mmap.txt
index 4db7c18bf6..7714f57caa 100644
--- a/Documentation/nommu-mmap.txt
+++ b/Documentation/nommu-mmap.txt
@@ -138,6 +138,16 @@ mode.  The former through the usual mechanism, the latter through files created
 on ramfs or tmpfs mounts.
 
 
+=======
+FUTEXES
+=======
+
+Futexes are supported in NOMMU mode if the arch supports them.  An error will
+be given if an address passed to the futex system call lies outside the
+mappings made by a process or if the mapping in which the address lies does not
+support futexes (such as an I/O chardev mapping).
+
+
 =============
 NO-MMU MREMAP
 =============