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| author | Eric W. Biederman <ebiederm@xmission.com> | 2007-02-13 14:38:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-13 16:07:36 -0800 |
| commit | 7f1f86a0d04e79f8165e6f50d329a520b8cd11e5 (patch) | |
| tree | b65a460c04a2086baf5c7970c4c4808a93f0c3bf /drivers/char/tty_io.c | |
| parent | 552ce544edfbe9bce79952a8c0f8d65b7f2d16bb (diff) | |
| download | lwn-7f1f86a0d04e79f8165e6f50d329a520b8cd11e5.tar.gz lwn-7f1f86a0d04e79f8165e6f50d329a520b8cd11e5.zip | |
[PATCH] Fix SAK_work workqueue initialization.
Somewhere in the rewrite of the work queues my cleanup of SAK handling
got broken. Maybe I didn't retest it properly or possibly the API
was changing so fast I missed something. Regardless currently
triggering a SAK now generates an ugly BUG_ON and kills the kernel.
Thanks to Alexey Dobriyan <adobriyan@openvz.org> for spotting this.
This modifies the use of SAK_work to initialize it when the data
structure it resides in is initialized, and to simply call
schedule_work when we need to generate a SAK. I update both
data structures that have a SAK_work member for consistency.
All of the old PREPARE_WORK calls that are now gone.
If we call schedule_work again before it has processed it
has generated the first SAK it will simply ignore the duplicate
schedule_work request.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/tty_io.c')
| -rw-r--r-- | drivers/char/tty_io.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 65672c57470b..5289254e7ab3 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -3442,7 +3442,6 @@ void do_SAK(struct tty_struct *tty) { if (!tty) return; - PREPARE_WORK(&tty->SAK_work, do_SAK_work); schedule_work(&tty->SAK_work); } @@ -3568,7 +3567,7 @@ static void initialize_tty_struct(struct tty_struct *tty) mutex_init(&tty->atomic_write_lock); spin_lock_init(&tty->read_lock); INIT_LIST_HEAD(&tty->tty_files); - INIT_WORK(&tty->SAK_work, NULL); + INIT_WORK(&tty->SAK_work, do_SAK_work); } /* |