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authorOleg Nesterov <oleg@redhat.com>2009-07-10 05:48:23 +0400
committerJames Morris <jmorris@namei.org>2009-07-17 03:10:42 +0400
commit5bb459bb45d1ad3c177485dcf0af01580aa31125 (patch)
treefd6d11d424d222b97f56d8b870bdecbacaab8a17 /lib/is_single_threaded.c
parentd2e3ee9b29f5de5b01e611b04e6fb29760589b01 (diff)
downloadlinux-5bb459bb45d1ad3c177485dcf0af01580aa31125.tar.xz
kernel: rename is_single_threaded(task) to current_is_single_threaded(void)
- is_single_threaded(task) is not safe unless task == current, we can't use task->signal or task->mm. - it doesn't make sense unless task == current, the task can fork right after the check. Rename it to current_is_single_threaded() and kill the argument. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'lib/is_single_threaded.c')
-rw-r--r--lib/is_single_threaded.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/is_single_threaded.c b/lib/is_single_threaded.c
index 2762516e0a5e..434010980bdf 100644
--- a/lib/is_single_threaded.c
+++ b/lib/is_single_threaded.c
@@ -15,8 +15,9 @@
/*
* Returns true if the task does not share ->mm with another thread/process.
*/
-bool is_single_threaded(struct task_struct *task)
+bool current_is_single_threaded(void)
{
+ struct task_struct *task = current;
struct mm_struct *mm = task->mm;
struct task_struct *p, *t;
bool ret;