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

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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>
Acked-by: Dan 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Souptick Joarder 2020-06-17 08:15:30 +05:30 committed by Greg Kroah-Hartman
parent 98fe05e21a
commit 5631feed39
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/gasket/gasket_page_table.c
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@ -449,7 +449,7 @@ static bool gasket_release_page(struct page *page)
if (!PageReserved(page)) if (!PageReserved(page))
SetPageDirty(page); SetPageDirty(page);
put_page(page); unpin_user_page(page);
return true; 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 + ptes[i].dma_addr = pg_tbl->coherent_pages[0].paddr +
off + i * PAGE_SIZE; off + i * PAGE_SIZE;
} else { } else {
ret = get_user_pages_fast(page_addr - offset, 1, ret = pin_user_pages_fast(page_addr - offset, 1,
FOLL_WRITE, &page); FOLL_WRITE, &page);
if (ret <= 0) { if (ret <= 0) {
dev_err(pg_tbl->device, 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); page_addr, offset, ret);
return ret ? ret : -ENOMEM; return ret ? ret : -ENOMEM;
} }