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vfio iommu type1: Update arguments of vfio_lock_acct 

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

Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Neo Jia <cjia@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Kirti Wankhede 2016-11-17 02:16:18 +05:30 committed by Alex Williamson
parent 2169037dc3
commit 3624a2486c
1 changed files with 16 additions and 14 deletions
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30
drivers/vfio/vfio_iommu_type1.c
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@ -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)