From e65b9ad222c280c031bc8d3642cc38dd3026fe06 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Tue, 15 Jan 2013 20:12:37 +0100 Subject: [PATCH] lockdep, rwsem: fix down_write_nest_lock() if !CONFIG_DEBUG_LOCK_ALLOC Commit 1b963c81b145 ("lockdep, rwsem: provide down_write_nest_lock()") contains a bug in a codepath when CONFIG_DEBUG_LOCK_ALLOC is disabled, which causes down_read() to be called instead of down_write() by mistake on such configurations. Fix that. Reported-and-tested-by: Andrew Clayton Reported-and-tested-by: Zlatko Calusic Signed-off-by: Jiri Kosina Reviewed-by: Rik van Riel Signed-off-by: Linus Torvalds --- include/linux/rwsem.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 413cc11e414a..8da67d625e13 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -135,7 +135,7 @@ do { \ #else # define down_read_nested(sem, subclass) down_read(sem) -# define down_write_nest_lock(sem, nest_lock) down_read(sem) +# define down_write_nest_lock(sem, nest_lock) down_write(sem) # define down_write_nested(sem, subclass) down_write(sem) #endif -- 2.20.1