diff options
| author |   Oleg Nesterov <oleg@redhat.com> | 2015-11-06 16:32:25 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-06 17:50:42 -0800 |
| commit | 9a13049e83f346cb1cbd60c64e520a73c396af16 (patch) | |
| tree | 11a2ac2ac28dbfa477d5b4f1e14a2173b4867a8f /fs | |
| parent | signal: turn dequeue_signal_lock() into kernel_dequeue_signal() (diff) | |
| download | linux-dev-9a13049e83f346cb1cbd60c64e520a73c396af16.tar.xz linux-dev-9a13049e83f346cb1cbd60c64e520a73c396af16.zip | |
signal: introduce kernel_signal_stop() to fix jffs2_garbage_collect_thread()
jffs2_garbage_collect_thread() can race with SIGCONT and sleep in
TASK_STOPPED state after it was already sent. Add the new helper,
kernel_signal_stop(), which does this correctly.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jffs2/background.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c index f3145fd86d86..53cc7350af33 100644 --- a/fs/jffs2/background.c +++ b/fs/jffs2/background.c @@ -132,8 +132,7 @@ static int jffs2_garbage_collect_thread(void *_c) case SIGSTOP: jffs2_dbg(1, "%s(): SIGSTOP received\n", __func__); - set_current_state(TASK_STOPPED); - schedule(); + kernel_signal_stop(); break; case SIGKILL: |