From 6ea0c2de314fbaed8e10526c2284e992d145171d Mon Sep 17 00:00:00 2001 From: Ira Weiny Date: Tue, 7 Mar 2023 09:15:31 -0800 Subject: RDMA/qib: Remove deprecated kmap() call kmap() has been deprecated in favor of the kmap_local_page() call. kmap_local_page() is thread local. In the sdma coalesce case the page allocated is potentially free'ed in a different context through qib_sdma_get_complete() -> qib_user_sdma_make_progress(). The use of kmap_local_page() is inappropriate in this call path. However, the page is allocated using GFP_KERNEL and will never be from highmem. Remove the use of kmap calls and use page_address() in this case. Signed-off-by: Ira Weiny Link: https://lore.kernel.org/r/20230217-kmap-qib-v1-1-e5a6fde167e0@intel.com Acked-by: Dennis Dalessandro Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/qib/qib_user_sdma.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'drivers/infiniband/hw/qib') diff --git a/drivers/infiniband/hw/qib/qib_user_sdma.c b/drivers/infiniband/hw/qib/qib_user_sdma.c index 9fe03d6ffac1..336eb15a721f 100644 --- a/drivers/infiniband/hw/qib/qib_user_sdma.c +++ b/drivers/infiniband/hw/qib/qib_user_sdma.c @@ -320,7 +320,6 @@ static int qib_user_sdma_page_to_frags(const struct qib_devdata *dd, unpin_user_page(page); } else { /* coalesce case */ - kunmap(page); __free_page(page); } ret = -ENOMEM; @@ -572,7 +571,7 @@ static int qib_user_sdma_coalesce(const struct qib_devdata *dd, goto done; } - mpage = kmap(page); + mpage = page_address(page); mpage_save = mpage; for (i = 0; i < niov; i++) { int cfur; @@ -581,7 +580,7 @@ static int qib_user_sdma_coalesce(const struct qib_devdata *dd, iov[i].iov_base, iov[i].iov_len); if (cfur) { ret = -EFAULT; - goto free_unmap; + goto page_free; } mpage += iov[i].iov_len; @@ -592,8 +591,7 @@ static int qib_user_sdma_coalesce(const struct qib_devdata *dd, page, 0, 0, len, mpage_save); goto done; -free_unmap: - kunmap(page); +page_free: __free_page(page); done: return ret; @@ -627,9 +625,6 @@ static void qib_user_sdma_free_pkt_frag(struct device *dev, pkt->addr[i].dma_length, DMA_TO_DEVICE); - if (pkt->addr[i].kvaddr) - kunmap(pkt->addr[i].page); - if (pkt->addr[i].put_page) unpin_user_page(pkt->addr[i].page); else -- cgit v1.2.3