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| author | Pavel Begunkov <asml.silence@gmail.com> | 2021-03-25 18:32:42 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-03-27 14:09:11 -0600 |
| commit | 1ee4160c73b2102a52bc97a4128a89c34821414f (patch) | |
| tree | 6972412a96f6cb6c26a1b6d60200b758eca3d33d /fs/io_uring.c | |
| parent | 1e4cf0d3d072173ee70757ee4aec11b2839705f9 (diff) | |
| download | lwn-1ee4160c73b2102a52bc97a4128a89c34821414f.tar.gz lwn-1ee4160c73b2102a52bc97a4128a89c34821414f.zip | |
io_uring: fix timeout cancel return code
When we cancel a timeout we should emit a sensible return code, like
-ECANCELED but not 0, otherwise it may trick users.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/7b0ad1065e3bd1994722702bd0ba9e7bc9b0683b.1616696997.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 2d43f7b87083..229ab9bfb45b 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1247,7 +1247,7 @@ static void io_queue_async_work(struct io_kiocb *req) io_queue_linked_timeout(link); } -static void io_kill_timeout(struct io_kiocb *req) +static void io_kill_timeout(struct io_kiocb *req, int status) { struct io_timeout_data *io = req->async_data; int ret; @@ -1257,7 +1257,7 @@ static void io_kill_timeout(struct io_kiocb *req) atomic_set(&req->ctx->cq_timeouts, atomic_read(&req->ctx->cq_timeouts) + 1); list_del_init(&req->timeout.list); - io_cqring_fill_event(req, 0); + io_cqring_fill_event(req, status); io_put_req_deferred(req, 1); } } @@ -1274,7 +1274,7 @@ static bool io_kill_timeouts(struct io_ring_ctx *ctx, struct task_struct *tsk, spin_lock_irq(&ctx->completion_lock); list_for_each_entry_safe(req, tmp, &ctx->timeout_list, timeout.list) { if (io_match_task(req, tsk, files)) { - io_kill_timeout(req); + io_kill_timeout(req, -ECANCELED); canceled++; } } @@ -1326,7 +1326,7 @@ static void io_flush_timeouts(struct io_ring_ctx *ctx) break; list_del_init(&req->timeout.list); - io_kill_timeout(req); + io_kill_timeout(req, 0); } while (!list_empty(&ctx->timeout_list)); ctx->cq_last_tm_flush = seq; |