Commit a0e136e5 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'work.get_user_pages_fast' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 

Pull get_user_pages_fast() conversion from Al Viro:
 "A bunch of places switched to get_user_pages_fast()"

* 'work.get_user_pages_fast' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ceph: use get_user_pages_fast()
  pvr2fs: use get_user_pages_fast()
  atomisp: use get_user_pages_fast()
  st: use get_user_pages_fast()
  via_dmablit(): use get_user_pages_fast()
  fsl_hypervisor: switch to get_user_pages_fast()
  rapidio: switch to get_user_pages_fast()
  vchiq_2835_arm: switch to get_user_pages_fast()
parents 16382e17 77478715

drivers/gpu/drm/via/via_dmablit.c

+3 −3
Original line number Diff line number Diff line
@@ -238,9 +238,9 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer) 
	vsg->pages = vzalloc(sizeof(struct page *) * vsg->num_pages);

	if (NULL == vsg->pages)

		return -ENOMEM;

	ret = get_user_pages_unlocked((unsigned long)xfer->mem_addr,

			vsg->num_pages, vsg->pages,

			(vsg->direction == DMA_FROM_DEVICE) ? FOLL_WRITE : 0);

	ret = get_user_pages_fast((unsigned long)xfer->mem_addr,

			vsg->num_pages, vsg->direction == DMA_FROM_DEVICE,

			vsg->pages);

	if (ret != vsg->num_pages) {

		if (ret < 0)

			return ret;

drivers/rapidio/devices/rio_mport_cdev.c

+2 −4
Original line number Diff line number Diff line
@@ -889,11 +889,9 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode, 
			goto err_req;

		}



		pinned = get_user_pages_unlocked(

		pinned = get_user_pages_fast(

				(unsigned long)xfer->loc_addr & PAGE_MASK,

				nr_pages,

				page_list,

				dir == DMA_FROM_DEVICE ? FOLL_WRITE : 0);

				nr_pages, dir == DMA_FROM_DEVICE, page_list);



		if (pinned != nr_pages) {

			if (pinned < 0) {

drivers/scsi/st.c

+1 −5
Original line number Diff line number Diff line
@@ -4920,11 +4920,7 @@ static int sgl_map_user_pages(struct st_buffer *STbp, 


        /* Try to fault in all of the necessary pages */

        /* rw==READ means read from drive, write into memory area */

	res = get_user_pages_unlocked(

		uaddr,

		nr_pages,

		pages,

		rw == READ ? FOLL_WRITE : 0); /* don't force */

	res = get_user_pages_fast(uaddr, nr_pages, rw == READ, pages);



	/* Errors and no page mapped should return here */

	if (res < nr_pages)

drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c

+2 −4
Original line number Diff line number Diff line
@@ -1020,10 +1020,8 @@ static int alloc_user_pages(struct hmm_buffer_object *bo, 
	} else {

		/*Handle frame buffer allocated in user space*/

		mutex_unlock(&bo->mutex);

		down_read(&current->mm->mmap_sem);

		page_nr = get_user_pages((unsigned long)userptr,

					 (int)(bo->pgnr), 1, pages, NULL);

		up_read(&current->mm->mmap_sem);

		page_nr = get_user_pages_fast((unsigned long)userptr,

					 (int)(bo->pgnr), 1, pages);

		mutex_lock(&bo->mutex);

		bo->mem_type = HMM_BO_MEM_TYPE_USER;

	}

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c

+7 −13
Original line number Diff line number Diff line
@@ -90,8 +90,7 @@ static irqreturn_t 
vchiq_doorbell_irq(int irq, void *dev_id);



static struct vchiq_pagelist_info *

create_pagelist(char __user *buf, size_t count, unsigned short type,

		struct task_struct *task);

create_pagelist(char __user *buf, size_t count, unsigned short type);



static void

free_pagelist(struct vchiq_pagelist_info *pagelistinfo,
@@ -255,8 +254,7 @@ vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle, 
	pagelistinfo = create_pagelist((char __user *)offset, size,

				       (dir == VCHIQ_BULK_RECEIVE)

				       ? PAGELIST_READ

				       : PAGELIST_WRITE,

				       current);

				       : PAGELIST_WRITE);



	if (!pagelistinfo)

		return VCHIQ_ERROR;
@@ -395,8 +393,7 @@ cleanup_pagelistinfo(struct vchiq_pagelist_info *pagelistinfo) 
 */



static struct vchiq_pagelist_info *

create_pagelist(char __user *buf, size_t count, unsigned short type,

		struct task_struct *task)

create_pagelist(char __user *buf, size_t count, unsigned short type)

{

	PAGELIST_T *pagelist;

	struct vchiq_pagelist_info *pagelistinfo;
@@ -476,14 +473,11 @@ create_pagelist(char __user *buf, size_t count, unsigned short type, 
		}

		/* do not try and release vmalloc pages */

	} else {

		down_read(&task->mm->mmap_sem);

		actual_pages = get_user_pages(

		actual_pages = get_user_pages_fast(

				          (unsigned long)buf & PAGE_MASK,

					  num_pages,

					  (type == PAGELIST_READ) ? FOLL_WRITE : 0,

					  pages,

					  NULL /*vmas */);

		up_read(&task->mm->mmap_sem);

					  type == PAGELIST_READ,

					  pages);



		if (actual_pages != num_pages) {

			vchiq_log_info(vchiq_arm_log_level,

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