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| author |   Jens Axboe <axboe@kernel.dk> | 2020-10-16 09:02:26 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-10-17 15:05:30 -0600 |
| commit | 91989c707884ecc7cd537281ab1a4b8fb7219da3 (patch) | |
| tree | 6233f38efc87d14b003fa217460378a4338b5a28 /fs/namespace.c | |
| parent | tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume() (diff) | |
| download | linux-dev-91989c707884ecc7cd537281ab1a4b8fb7219da3.tar.xz linux-dev-91989c707884ecc7cd537281ab1a4b8fb7219da3.zip | |
task_work: cleanup notification modes
A previous commit changed the notification mode from true/false to an
int, allowing notify-no, notify-yes, or signal-notify. This was
backwards compatible in the sense that any existing true/false user
would translate to either 0 (on notification sent) or 1, the latter
which mapped to TWA_RESUME. TWA_SIGNAL was assigned a value of 2.
Clean this up properly, and define a proper enum for the notification
mode. Now we have:
- TWA_NONE. This is 0, same as before the original change, meaning no
notification requested.
- TWA_RESUME. This is 1, same as before the original change, meaning
that we use TIF_NOTIFY_RESUME.
- TWA_SIGNAL. This uses TIF_SIGPENDING/JOBCTL_TASK_WORK for the
notification.
Clean up all the callers, switching their 0/1/false/true to using the
appropriate TWA_* mode for notifications.
Fixes: e91b48162332 ("task_work: teach task_work_add() to do signal_wake_up()")
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 294e05a13d17..1a75336668a3 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1191,7 +1191,7 @@ static void mntput_no_expire(struct mount *mnt) struct task_struct *task = current; if (likely(!(task->flags & PF_KTHREAD))) { init_task_work(&mnt->mnt_rcu, __cleanup_mnt); - if (!task_work_add(task, &mnt->mnt_rcu, true)) + if (!task_work_add(task, &mnt->mnt_rcu, TWA_RESUME)) return; } if (llist_add(&mnt->mnt_llist, &delayed_mntput_list)) |