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mm/hmm: remove hmm_range vma 

Since hmm_range_fault() doesn't use the struct hmm_range vma field, remove
it.

Link: https://lore.kernel.org/r/20190726005650.2566-8-rcampbell@nvidia.com
Suggested-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Ralph Campbell 2019-07-25 17:56:50 -07:00 committed by Jason Gunthorpe
parent f527688d5d
commit cc374377a1
3 changed files with 3 additions and 6 deletions
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7
drivers/gpu/drm/nouveau/nouveau_svm.c
View File

@ -496,12 +496,12 @@ nouveau_range_fault(struct hmm_mirror *mirror, struct hmm_range *range)
range->start, range->end,
PAGE_SHIFT);
if (ret) {
up_read(&range->vma->vm_mm->mmap_sem);
up_read(&range->hmm->mm->mmap_sem);
return (int)ret;
}
if (!hmm_range_wait_until_valid(range, HMM_RANGE_DEFAULT_TIMEOUT)) {
up_read(&range->vma->vm_mm->mmap_sem);
up_read(&range->hmm->mm->mmap_sem);
return -EBUSY;
}
@ -509,7 +509,7 @@ nouveau_range_fault(struct hmm_mirror *mirror, struct hmm_range *range)
if (ret <= 0) {
if (ret == 0)
ret = -EBUSY;
up_read(&range->vma->vm_mm->mmap_sem);
up_read(&range->hmm->mm->mmap_sem);
hmm_range_unregister(range);
return ret;
}
@ -682,7 +682,6 @@ nouveau_svm_fault(struct nvif_notify *notify)
args.i.p.addr + args.i.p.size, fn - fi);
/* Have HMM fault pages within the fault window to the GPU. */
range.vma = vma;
range.start = args.i.p.addr;
range.end = args.i.p.addr + args.i.p.size;
range.pfns = args.phys;

1
include/linux/hmm.h
View File

@ -164,7 +164,6 @@ enum hmm_pfn_value_e {
*/
struct hmm_range {
struct hmm *hmm;
struct vm_area_struct *vma;
struct list_head list;
unsigned long start;
unsigned long end;

1
mm/hmm.c
View File

@ -1002,7 +1002,6 @@ long hmm_range_fault(struct hmm_range *range, unsigned int flags)
return -EPERM;
}
range->vma = vma;
hmm_vma_walk.pgmap = NULL;
hmm_vma_walk.last = start;
hmm_vma_walk.flags = flags;