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io_uring: use io_file_from_index in io_msg_grab_file

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Use io_file_from_index instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230620113235.920399-8-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-06-20 13:32:34 +02:00 committed by Jens Axboe
parent 60a666f097
commit f432c8c8c1
1 changed files with 1 additions and 3 deletions
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4
io_uring/msg_ring.c
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@ -162,14 +162,12 @@ static struct file *io_msg_grab_file(struct io_kiocb *req, unsigned int issue_fl
struct io_msg *msg = io_kiocb_to_cmd(req, struct io_msg);
struct io_ring_ctx *ctx = req->ctx;
struct file *file = NULL;
unsigned long file_ptr;
int idx = msg->src_fd;
io_ring_submit_lock(ctx, issue_flags);
if (likely(idx < ctx->nr_user_files)) {
idx = array_index_nospec(idx, ctx->nr_user_files);
file_ptr = io_fixed_file_slot(&ctx->file_table, idx)->file_ptr;
file = (struct file *) (file_ptr & FFS_MASK);
file = io_file_from_index(&ctx->file_table, idx);
if (file)
get_file(file);
}