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io-wq: ensure work->task_pid is cleared on init 

We use ->task_pid for exit cancellation, but we need to ensure it's
cleared to zero for io_req_work_grab_env() to do the right thing. Take
a suggestion from Bart and clear the whole thing, just setting the
function passed in. This makes it more future proof as well.

Fixes: 36282881a7 ("io-wq: add io_wq_cancel_pid() to cancel based on a specific pid")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2020-02-25 11:52:56 -07:00
parent 3030fd4cb7
commit 2d141dd2ca
1 changed files with 4 additions and 10 deletions
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14
fs/io-wq.h
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@ -79,16 +79,10 @@ struct io_wq_work {
pid_t task_pid;
};
#define INIT_IO_WORK(work, _func) \
do { \
(work)->list.next = NULL; \
(work)->func = _func; \
(work)->files = NULL; \
(work)->mm = NULL; \
(work)->creds = NULL; \
(work)->fs = NULL; \
(work)->flags = 0; \
} while (0) \
#define INIT_IO_WORK(work, _func) \
do { \
*(work) = (struct io_wq_work){ .func = _func }; \
} while (0) \
typedef void (get_work_fn)(struct io_wq_work *);
typedef void (put_work_fn)(struct io_wq_work *);