diff options
| author | Dean Luick <dean.luick@cornelisnetworks.com> | 2023-01-09 20:04:08 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-01-31 15:52:35 +0100 |
| commit | f9c47b2caa7ffc903ec950b454b59c209afe3182 (patch) | |
| tree | b5c8fcf76c0b25a92d6b7e027e77a7f0cb705f79 /drivers/infiniband/hw/hfi1 | |
| parent | RDMA/umem: Use dma-buf locked API to solve deadlock (diff) | |
| download | linux-f9c47b2caa7ffc903ec950b454b59c209afe3182.tar.xz linux-f9c47b2caa7ffc903ec950b454b59c209afe3182.zip | |
IB/hfi1: Assign npages earlier
Improve code clarity and enable earlier use of
tidbuf->npages by moving its assignment to
structure creation time.
Signed-off-by: Dean Luick <dean.luick@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Link: https://lore.kernel.org/r/167329104884.1472990.4639750192433251493.stgit@awfm-02.cornelisnetworks.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/user_exp_rcv.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.c b/drivers/infiniband/hw/hfi1/user_exp_rcv.c index b02f2f0809c8..350884d5f089 100644 --- a/drivers/infiniband/hw/hfi1/user_exp_rcv.c +++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.c @@ -160,16 +160,11 @@ static void unpin_rcv_pages(struct hfi1_filedata *fd, static int pin_rcv_pages(struct hfi1_filedata *fd, struct tid_user_buf *tidbuf) { int pinned; - unsigned int npages; + unsigned int npages = tidbuf->npages; unsigned long vaddr = tidbuf->vaddr; struct page **pages = NULL; struct hfi1_devdata *dd = fd->uctxt->dd; - /* Get the number of pages the user buffer spans */ - npages = num_user_pages(vaddr, tidbuf->length); - if (!npages) - return -EINVAL; - if (npages > fd->uctxt->expected_count) { dd_dev_err(dd, "Expected buffer too big\n"); return -EINVAL; @@ -196,7 +191,6 @@ static int pin_rcv_pages(struct hfi1_filedata *fd, struct tid_user_buf *tidbuf) return pinned; } tidbuf->pages = pages; - tidbuf->npages = npages; fd->tid_n_pinned += pinned; return pinned; } @@ -274,6 +268,7 @@ int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd, mutex_init(&tidbuf->cover_mutex); tidbuf->vaddr = tinfo->vaddr; tidbuf->length = tinfo->length; + tidbuf->npages = num_user_pages(tidbuf->vaddr, tidbuf->length); tidbuf->psets = kcalloc(uctxt->expected_count, sizeof(*tidbuf->psets), GFP_KERNEL); if (!tidbuf->psets) { |