[PATCH 5.10 04/54] io_uring: pass files into kill timeouts/poll

Greg Kroah-Hartman
2021-02-11T16:26:48Z

From: Pavel Begunkov <asml.silence@gmail.com>

[ Upstream commit 6b81928d4ca8668513251f9c04cdcb9d38ef51c7 ]

Make io_poll_remove_all() and io_kill_timeouts() to match against files
as well. A preparation patch, effectively not used by now.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/io_uring.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)

--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1508,14 +1508,15 @@ static bool io_task_match(struct io_kioc
/*
* Returns true if we found and killed one or more timeouts
*/
-static bool io_kill_timeouts(struct io_ring_ctx *ctx, struct task_struct *tsk)
+static bool io_kill_timeouts(struct io_ring_ctx *ctx, struct task_struct *tsk,
+ struct files_struct *files)
{
struct io_kiocb *req, *tmp;
int canceled = 0;

spin_lock_irq(&ctx->completion_lock);
list_for_each_entry_safe(req, tmp, &ctx->timeout_list, timeout.list) {
- if (io_task_match(req, tsk)) {
+ if (io_match_task(req, tsk, files)) {
io_kill_timeout(req);
canceled++;
}
@@ -5312,7 +5313,8 @@ static bool io_poll_remove_one(struct io
/*
* Returns true if we found and killed one or more poll requests
*/
-static bool io_poll_remove_all(struct io_ring_ctx *ctx, struct task_struct *tsk)
+static bool io_poll_remove_all(struct io_ring_ctx *ctx, struct task_struct *tsk,
+ struct files_struct *files)
{
struct hlist_node *tmp;
struct io_kiocb *req;
@@ -5324,7 +5326,7 @@ static bool io_poll_remove_all(struct io

list = &ctx->cancel_hash[i];
hlist_for_each_entry_safe(req, tmp, list, hash_node) {
- if (io_task_match(req, tsk))
+ if (io_match_task(req, tsk, files))
posted += io_poll_remove_one(req);
}
}
@@ -8485,8 +8487,8 @@ static void io_ring_ctx_wait_and_kill(st
__io_cqring_overflow_flush(ctx, true, NULL, NULL);
mutex_unlock(&ctx->uring_lock);

- io_kill_timeouts(ctx, NULL);
- io_poll_remove_all(ctx, NULL);
+ io_kill_timeouts(ctx, NULL, NULL);
+ io_poll_remove_all(ctx, NULL, NULL);

if (ctx->io_wq)
io_wq_cancel_cb(ctx->io_wq, io_cancel_ctx_cb, ctx, true);
@@ -8721,8 +8723,8 @@ static void __io_uring_cancel_task_reque
}
}

- ret |= io_poll_remove_all(ctx, task);
- ret |= io_kill_timeouts(ctx, task);
+ ret |= io_poll_remove_all(ctx, task, NULL);
+ ret |= io_kill_timeouts(ctx, task, NULL);
if (!ret)
break;
io_run_task_work();