From f4ee2ccb6f9241c4bae2df66c296cf579d1487fb Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 2 Oct 2013 16:27:49 +0200 Subject: [PATCH] ced1401: Convert driver to use get_user_pages_fast() Signed-off-by: Jan Kara Signed-off-by: Greg Kroah-Hartman --- drivers/staging/ced1401/ced_ioc.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/staging/ced1401/ced_ioc.c b/drivers/staging/ced1401/ced_ioc.c index 2dbaf39e2fc2..62efd74b8c04 100644 --- a/drivers/staging/ced1401/ced_ioc.c +++ b/drivers/staging/ced1401/ced_ioc.c @@ -692,10 +692,7 @@ static int SetArea(DEVICE_EXTENSION *pdx, int nArea, char __user *puBuf, __func__, puBuf, dwLength, bCircular); /* To pin down user pages we must first acquire the mapping semaphore. */ - down_read(¤t->mm->mmap_sem); /* get memory map semaphore */ - nPages = get_user_pages(current, current->mm, ulStart, len, 1, 0, - pPages, NULL); - up_read(¤t->mm->mmap_sem); /* release the semaphore */ + nPages = get_user_pages_fast(ulStart, len, 1, pPages); dev_dbg(&pdx->interface->dev, "%s nPages = %d", __func__, nPages); if (nPages > 0) { /* if we succeeded */ -- 2.34.1