From 67c4d9e693e3bb7fb968af24e3584f821a78ba56 Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Mon, 15 Jun 2020 10:24:05 +0300 Subject: io_uring: batch cancel in io_uring_cancel_files() Instead of waiting for each request one by one, first try to cancel all of them in a batched manner, and then go over inflight_list/etc to reap leftovers. Signed-off-by: Pavel Begunkov Signed-off-by: Jens Axboe --- fs/io_uring.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'fs') diff --git a/fs/io_uring.c b/fs/io_uring.c index ad5128a40c14..b6bcd5a7f4bc 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -7366,9 +7366,22 @@ static int io_uring_release(struct inode *inode, struct file *file) return 0; } +static bool io_wq_files_match(struct io_wq_work *work, void *data) +{ + struct files_struct *files = data; + + return work->files == files; +} + static void io_uring_cancel_files(struct io_ring_ctx *ctx, struct files_struct *files) { + if (list_empty_careful(&ctx->inflight_list)) + return; + + /* cancel all at once, should be faster than doing it one by one*/ + io_wq_cancel_cb(ctx->io_wq, io_wq_files_match, files, true); + while (!list_empty_careful(&ctx->inflight_list)) { struct io_kiocb *cancel_req = NULL, *req; DEFINE_WAIT(wait); -- cgit v1.2.3