From 5e956f2fe580b15d03da1febcadd180af1d87fb1 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Fri, 9 Oct 2020 13:49:53 +0100 Subject: [PATCH] io_uring: Convert advanced XArray uses to the normal API commit 5e2ed8c4f45093698855b1f45cdf43efbf6dd498 upstream. There are no bugs here that I've spotted, it's just easier to use the normal API and there are no performance advantages to using the more verbose advanced API. Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Jens Axboe --- fs/io_uring.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index 98f4c2789391..b27a8edde11f 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -7958,27 +7958,17 @@ static int io_uring_add_task_file(struct file *file) static void io_uring_del_task_file(struct file *file) { struct io_uring_task *tctx = current->io_uring; - XA_STATE(xas, &tctx->xa, (unsigned long) file); if (tctx->last == file) tctx->last = NULL; - - xas_lock(&xas); - file = xas_store(&xas, NULL); - xas_unlock(&xas); - + file = xa_erase(&tctx->xa, (unsigned long)file); if (file) fput(file); } static void __io_uring_attempt_task_drop(struct file *file) { - XA_STATE(xas, ¤t->io_uring->xa, (unsigned long) file); - struct file *old; - - rcu_read_lock(); - old = xas_load(&xas); - rcu_read_unlock(); + struct file *old = xa_load(¤t->io_uring->xa, (unsigned long)file); if (old == file) io_uring_del_task_file(file); -- 2.25.1