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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2017-02-27 14:27:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-27 18:43:45 -0800
commite3b5a342ab9643b4079c8d417d90519388469341 (patch)
treedf7915864309651c20887fe3f9d7cf20fb9b8ada /include/linux/pid.h
parent369f2679f7e73996bf29ecd3ec79df3cce1be27d (diff)
include/linux/pid.h: use for_each_thread() in do_each_pid_thread()
while_each_pid_thread() is using while_each_thread(), which is unsafe under RCU lock according to commit 0c740d0afc3b ("introduce for_each_thread() to replace the buggy while_each_thread()"). Use for_each_thread() in do_each_pid_thread() which is safe under RCU lock. Link: http://lkml.kernel.org/r/201702011947.DBD56740.OMVHOLOtSJFFFQ@I-love.SAKURA.ne.jp Link: http://lkml.kernel.org/r/1486041779-4401-2-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/pid.h')
-rw-r--r--include/linux/pid.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/pid.h b/include/linux/pid.h
index 23705a53abba..298ead5512e5 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -191,10 +191,10 @@ pid_t pid_vnr(struct pid *pid);
#define do_each_pid_thread(pid, type, task) \
do_each_pid_task(pid, type, task) { \
struct task_struct *tg___ = task; \
- do {
+ for_each_thread(tg___, task) {
#define while_each_pid_thread(pid, type, task) \
- } while_each_thread(tg___, task); \
+ } \
task = tg___; \
} while_each_pid_task(pid, type, task)
#endif /* _LINUX_PID_H */