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authorEugene Teo <eugeneteo@kernel.sg>2007-10-18 23:40:38 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-19 11:53:42 -0700
commit270f722d4d5f94b02fd48eed47e57917ab00a858 (patch)
treef6f58a0730c8968d2b4b983965b4409761616ab2 /kernel/fork.c
parentd85f50d5e1aa99ab082035f94265847521819e58 (diff)
downloadlwn-270f722d4d5f94b02fd48eed47e57917ab00a858.tar.gz
lwn-270f722d4d5f94b02fd48eed47e57917ab00a858.zip
Fix tsk->exit_state usage
tsk->exit_state can only be 0, EXIT_ZOMBIE, or EXIT_DEAD. A non-zero test is the same as tsk->exit_state & (EXIT_ZOMBIE | EXIT_DEAD), so just testing tsk->exit_state is sufficient. Signed-off-by: Eugene Teo <eugeneteo@kernel.sg> Cc: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index a794bfcf6003..240aa6601f5b 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -117,7 +117,7 @@ EXPORT_SYMBOL(free_task);
void __put_task_struct(struct task_struct *tsk)
{
- WARN_ON(!(tsk->exit_state & (EXIT_DEAD | EXIT_ZOMBIE)));
+ WARN_ON(!tsk->exit_state);
WARN_ON(atomic_read(&tsk->usage));
WARN_ON(tsk == current);