X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fthreads.h;h=e646bcdf26142fd55998efd116089b11346deb3a;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=b59738ac619734fb8c077cef8c4c70ac03a3aebc;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/include/linux/threads.h b/include/linux/threads.h
index b59738ac6..e646bcdf2 100644
--- a/include/linux/threads.h
+++ b/include/linux/threads.h
@@ -28,7 +28,8 @@
 #define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)
 
 /*
- * A maximum of 4 million PIDs should be enough for a while:
+ * A maximum of 4 million PIDs should be enough for a while.
+ * [NOTE: PID/TIDs are limited to 2^29 ~= 500+ million, see futex.h.]
  */
 #define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
 	(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))