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io_uring: Convert advanced XArray uses to the normal API 

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>
zero-sugar-mainline-defconfig
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);