Commit 5631feed authored by Souptick Joarder's avatar Souptick Joarder Committed by Greg Kroah-Hartman
Browse files

staging: gasket: Convert get_user_pages*() --> pin_user_pages*() 

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: default avatarSouptick Joarder <jrdr.linux@gmail.com>
Acked-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>

Link: https://lore.kernel.org/r/1592361930-3813-1-git-send-email-jrdr.linux@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 98fe05e2

drivers/staging/gasket/gasket_page_table.c

+3 −3
Original line number Diff line number Diff line
@@ -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;

			}