Messages in this thread Patch in this message | | | From | Souptick Joarder <> | Subject | [PATCH] staging: gasket: Convert get_user_pages*() --> pin_user_pages*() | Date | Sun, 31 May 2020 12:53:11 +0530 |
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In 2019, we introduced pin_user_pages*() and now we are converting get_user_pages*() to the new API as appropriate. [1] & [2] could be referred for more information.
[1] Documentation/core-api/pin_user_pages.rst
[2] "Explicit pinning of user-space pages": https://lwn.net/Articles/807108/
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Dan Carpenter <dan.carpenter@oracle.com>
--- Hi,
I'm compile tested this, but unable to run-time test, so any testing help is much appriciated.
drivers/staging/gasket/gasket_page_table.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c index f6d7157..d712ad4 100644 --- a/drivers/staging/gasket/gasket_page_table.c +++ b/drivers/staging/gasket/gasket_page_table.c @@ -449,7 +449,7 @@ static bool gasket_release_page(struct page *page) if (!PageReserved(page)) SetPageDirty(page); - put_page(page); + unpin_user_page(page); return true; } @@ -486,12 +486,12 @@ static int gasket_perform_mapping(struct gasket_page_table *pg_tbl, ptes[i].dma_addr = pg_tbl->coherent_pages[0].paddr + off + i * PAGE_SIZE; } else { - ret = get_user_pages_fast(page_addr - offset, 1, + ret = pin_user_pages_fast(page_addr - offset, 1, FOLL_WRITE, &page); if (ret <= 0) { dev_err(pg_tbl->device, - "get user pages failed for addr=0x%lx, offset=0x%lx [ret=%d]\n", + "pin user pages failed for addr=0x%lx, offset=0x%lx [ret=%d]\n", page_addr, offset, ret); return ret ? ret : -ENOMEM; } -- 1.9.1
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