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Commit 3624a248 authored by Kirti Wankhede's avatar Kirti Wankhede Committed by Alex Williamson
Browse files

vfio iommu type1: Update arguments of vfio_lock_acct 



Added task structure as input argument to vfio_lock_acct() function.

Signed-off-by: default avatarKirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: default avatarNeo Jia <cjia@nvidia.com>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent 2169037d

drivers/vfio/vfio_iommu_type1.c

+16 −14
Original line number Diff line number Diff line
@@ -150,17 +150,22 @@ static void vfio_lock_acct_bg(struct work_struct *work) 
	kfree(vwork);

}



static void vfio_lock_acct(long npage)

static void vfio_lock_acct(struct task_struct *task, long npage)

{

	struct vwork *vwork;

	struct mm_struct *mm;



	if (!current->mm || !npage)

	if (!npage)

		return;



	mm = get_task_mm(task);

	if (!mm)

		return; /* process exited or nothing to do */



	if (down_write_trylock(&current->mm->mmap_sem)) {

		current->mm->locked_vm += npage;

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

	if (down_write_trylock(&mm->mmap_sem)) {

		mm->locked_vm += npage;

		up_write(&mm->mmap_sem);

		mmput(mm);

		return;

	}
@@ -170,11 +175,8 @@ static void vfio_lock_acct(long npage) 
	 * wouldn't need this silliness

	 */

	vwork = kmalloc(sizeof(struct vwork), GFP_KERNEL);

	if (!vwork)

		return;

	mm = get_task_mm(current);

	if (!mm) {

		kfree(vwork);

	if (!vwork) {

		mmput(mm);

		return;

	}

	INIT_WORK(&vwork->work, vfio_lock_acct_bg);
@@ -285,7 +287,7 @@ static long vfio_pin_pages_remote(unsigned long vaddr, long npage, 


	if (unlikely(disable_hugepages)) {

		if (!rsvd)

			vfio_lock_acct(1);

			vfio_lock_acct(current, 1);

		return 1;

	}
@@ -313,7 +315,7 @@ static long vfio_pin_pages_remote(unsigned long vaddr, long npage, 
	}



	if (!rsvd)

		vfio_lock_acct(i);

		vfio_lock_acct(current, i);



	return i;

}
@@ -328,7 +330,7 @@ static long vfio_unpin_pages_remote(unsigned long pfn, long npage, 
		unlocked += put_pfn(pfn++, prot);



	if (do_accounting)

		vfio_lock_acct(-unlocked);

		vfio_lock_acct(current, -unlocked);



	return unlocked;

}
@@ -390,7 +392,7 @@ static void vfio_unmap_unpin(struct vfio_iommu *iommu, struct vfio_dma *dma) 
		cond_resched();

	}



	vfio_lock_acct(-unlocked);

	vfio_lock_acct(current, -unlocked);

}



static void vfio_remove_dma(struct vfio_iommu *iommu, struct vfio_dma *dma)