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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-05-23 22:57:26 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-24 05:14:11 +0200 |
| commit | 49b12d4f5e274517b8bc032d507abf31cc2f4150 (patch) | |
| tree | 4663d224a86ea848742716f6f4ec708e9a3c04b3 /kernel/power/process.c | |
| parent | freezer: fix vfork problem (diff) | |
| download | linux-49b12d4f5e274517b8bc032d507abf31cc2f4150.tar.xz linux-49b12d4f5e274517b8bc032d507abf31cc2f4150.zip | |
freezer: take kernel_execve into consideration
Kernel threads can become userland processes by calling kernel_execve().
In particular, this may happen right after the try_to_freeze_tasks()
called with FREEZER_USER_SPACE has returned, so try_to_freeze_tasks()
needs to take userspace processes into consideration even if it is
called with FREEZER_KERNEL_THREADS.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power/process.c')
| -rw-r--r-- | kernel/power/process.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/power/process.c b/kernel/power/process.c index eefca8581fa0..2cea2658e985 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -120,7 +120,7 @@ static unsigned int try_to_freeze_tasks(int freeze_user_space) cancel_freezing(p); continue; } - if (is_user_space(p) == !freeze_user_space) + if (freeze_user_space && !is_user_space(p)) continue; freeze_process(p); @@ -147,7 +147,7 @@ static unsigned int try_to_freeze_tasks(int freeze_user_space) TIMEOUT / HZ, todo); read_lock(&tasklist_lock); do_each_thread(g, p) { - if (is_user_space(p) == !freeze_user_space) + if (freeze_user_space && !is_user_space(p)) continue; task_lock(p); |