Commit f4ee2ccb authored by Jan Kara's avatar Jan Kara Committed by Greg Kroah-Hartman
Browse files

ced1401: Convert driver to use get_user_pages_fast() 



Signed-off-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d1a168ec

drivers/staging/ced1401/ced_ioc.c

+1 −4
Original line number Diff line number Diff line
@@ -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(&current->mm->mmap_sem);	/*  get memory map semaphore */

	nPages = get_user_pages(current, current->mm, ulStart, len, 1, 0,

				pPages, NULL);

	up_read(&current->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 */