From 854ff82ab085aed7509f6fb90f79ce6c41ee1fa4 Mon Sep 17 00:00:00 2001 From: Henrik Austad Date: Wed, 27 Nov 2013 23:18:00 +0100 Subject: [PATCH] Documentation/robust-futex-API: Count properly to 4 A strictly monotonically increasing sequence is normally used in numbered lists as they provide an intuitive ordering of the elements. However, in situations where race conditions can appear, this assumption breaks down and you can end up with unpredictable results, leading to a rather confusing list :-) This changes the numbered list 1,2,2,2 to the more intuitive 1,2,3,4. Introduced in: 2eec9ad91f71 [PATCH] lightweight robust futexes: docs Signed-off-by: Henrik Austad Link: http://lkml.kernel.org/r/1385590680-8110-1-git-send-email-henrik@austad.us Signed-off-by: Ingo Molnar --- Documentation/robust-futex-ABI.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/robust-futex-ABI.txt b/Documentation/robust-futex-ABI.txt index fd1cd8aae4eb..16eb314f56cc 100644 --- a/Documentation/robust-futex-ABI.txt +++ b/Documentation/robust-futex-ABI.txt @@ -146,8 +146,8 @@ On removal: 1) set the 'list_op_pending' word to the address of the 'lock entry' to be removed, 2) remove the lock entry for this lock from the 'head' list, - 2) release the futex lock, and - 2) clear the 'lock_op_pending' word. + 3) release the futex lock, and + 4) clear the 'lock_op_pending' word. On exit, the kernel will consider the address stored in 'list_op_pending' and the address of each 'lock word' found by walking -- 2.20.1