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io_uring: Convert advanced XArray uses to the normal API

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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) <willy@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-10-09 13:49:53 +01:00 committed by Jens Axboe
parent 236434c343
commit 5e2ed8c4f4
1 changed files with 2 additions and 12 deletions
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14
fs/io_uring.c
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@ -8615,27 +8615,17 @@ 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, &current->io_uring->xa, (unsigned long) file);
struct file *old;
rcu_read_lock();
old = xas_load(&xas);
rcu_read_unlock();
struct file *old = xa_load(&current->io_uring->xa, (unsigned long)file);
if (old == file)
io_uring_del_task_file(file);