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authorOleg Nesterov <oleg@tv-sign.ru>2008-07-25 01:47:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:39 -0700
commit7b34e4283c685f5cc6ba6d30e939906eee0d4bcf (patch)
tree6822edd5c63db79e97b8c5379a18a058bc5405ff /include/linux/init_task.h
parent3d749b9e676b26584a47e75c235aa6f69d0697ae (diff)
downloadop-kernel-dev-7b34e4283c685f5cc6ba6d30e939906eee0d4bcf.zip
op-kernel-dev-7b34e4283c685f5cc6ba6d30e939906eee0d4bcf.tar.gz
introduce PF_KTHREAD flag
Introduce the new PF_KTHREAD flag to mark the kernel threads. It is set by INIT_TASK() and copied to the forked childs (we could set it in kthreadd() along with PF_NOFREEZE instead). daemonize() was changed as well. In that case testing of PF_KTHREAD is racy, but daemonize() is hopeless anyway. This flag is cleared in do_execve(), before search_binary_handler(). Probably not the best place, we can do this in exec_mmap() or in start_thread(), or clear it along with PF_FORKNOEXEC. But I think this doesn't matter in practice, and if do_execve() fails kthread should die soon. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@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/init_task.h')
-rw-r--r--include/linux/init_task.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 93c45ac..021d8e7 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -122,7 +122,7 @@ extern struct group_info init_groups;
.state = 0, \
.stack = &init_thread_info, \
.usage = ATOMIC_INIT(2), \
- .flags = 0, \
+ .flags = PF_KTHREAD, \
.lock_depth = -1, \
.prio = MAX_PRIO-20, \
.static_prio = MAX_PRIO-20, \
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