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IB/hfi1: check for user backed iterator, not specific iterator type 

In preparation for switching single segment iterators to using ITER_UBUF,
swap the check for whether we are user backed or not. While at it, move
it outside the srcu locking area to clean up the code a bit.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2023-03-28 14:32:38 -06:00
parent de4f5fed3f
commit 23ecdcd0c0
1 changed files with 2 additions and 5 deletions
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7
drivers/infiniband/hw/hfi1/file_ops.c
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@ -267,6 +267,8 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from)
if (!HFI1_CAP_IS_KSET(SDMA))
return -EINVAL;
if (!from->user_backed)
return -EINVAL;
idx = srcu_read_lock(&fd->pq_srcu);
pq = srcu_dereference(fd->pq, &fd->pq_srcu);
if (!cq || !pq) {
@ -274,11 +276,6 @@ static ssize_t hfi1_write_iter(struct kiocb *kiocb, struct iov_iter *from)
return -EIO;
}
if (!iter_is_iovec(from) || !dim) {
srcu_read_unlock(&fd->pq_srcu, idx);
return -EINVAL;
}
trace_hfi1_sdma_request(fd->dd, fd->uctxt->ctxt, fd->subctxt, dim);
if (atomic_read(&pq->n_reqs) == pq->n_max_reqs) {