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authorPaul Mackerras <paulus@samba.org>2006-03-29 13:24:50 +1100
committerPaul Mackerras <paulus@samba.org>2006-03-29 13:24:50 +1100
commitbac30d1a78d0f11c613968fc8b351a91ed465386 (patch)
treee52f3c876522a2f6047a6ec1c27df2e8a79486b8 /include/linux/threads.h
parente8222502ee6157e2713da9e0792c21f4ad458d50 (diff)
parentca9ba4471c1203bb6e759b76e83167fec54fe590 (diff)
Merge ../linux-2.6
Diffstat (limited to 'include/linux/threads.h')
-rw-r--r--include/linux/threads.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/threads.h b/include/linux/threads.h
index b59738ac6197..e646bcdf2614 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))