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RDMA/umem: Remove hugetlb flag 

The drivers i40iw and bnxt_re no longer dependent on the hugetlb flag. So
remove this flag from ib_umem structure.

Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Shiraz Saleem 2019-05-06 08:53:36 -05:00 committed by Jason Gunthorpe
parent d85582517e
commit db6c6774af
3 changed files with 1 additions and 29 deletions
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26
drivers/infiniband/core/umem.c
View File

@ -37,7 +37,6 @@
#include <linux/sched/signal.h>
#include <linux/sched/mm.h>
#include <linux/export.h>
#include <linux/hugetlb.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
#include <rdma/ib_umem_odp.h>
@ -199,14 +198,12 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr,
struct ib_ucontext *context;
struct ib_umem *umem;
struct page **page_list;
struct vm_area_struct **vma_list;
unsigned long lock_limit;
unsigned long new_pinned;
unsigned long cur_base;
struct mm_struct *mm;
unsigned long npages;
int ret;
int i;
unsigned long dma_attrs = 0;
struct scatterlist *sg;
unsigned int gup_flags = FOLL_WRITE;
@ -264,23 +261,12 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr,
return umem;
}
/* We assume the memory is from hugetlb until proved otherwise */
umem->hugetlb = 1;
page_list = (struct page **) __get_free_page(GFP_KERNEL);
if (!page_list) {
ret = -ENOMEM;
goto umem_kfree;
}
/*
* if we can't alloc the vma_list, it's not so bad;
* just assume the memory is not hugetlb memory
*/
vma_list = (struct vm_area_struct **) __get_free_page(GFP_KERNEL);
if (!vma_list)
umem->hugetlb = 0;
npages = ib_umem_num_pages(umem);
if (npages == 0 || npages > UINT_MAX) {
ret = -EINVAL;
@ -312,7 +298,7 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr,
ret = get_user_pages_longterm(cur_base,
min_t(unsigned long, npages,
PAGE_SIZE / sizeof (struct page *)),
gup_flags, page_list, vma_list);
gup_flags, page_list, NULL);
if (ret < 0) {
up_read(&mm->mmap_sem);
goto umem_release;
@ -325,14 +311,6 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr,
dma_get_max_seg_size(context->device->dma_device),
&umem->sg_nents);
/* Continue to hold the mmap_sem as vma_list access
* needs to be protected.
*/
for (i = 0; i < ret && umem->hugetlb; i++) {
if (vma_list && !is_vm_hugetlb_page(vma_list[i]))
umem->hugetlb = 0;
}
up_read(&mm->mmap_sem);
}
@ -357,8 +335,6 @@ umem_release:
vma:
atomic64_sub(ib_umem_num_pages(umem), &mm->pinned_vm);
out:
if (vma_list)
free_page((unsigned long) vma_list);
free_page((unsigned long) page_list);
umem_kfree:
if (ret) {

3
drivers/infiniband/core/umem_odp.c
View File

@ -417,9 +417,6 @@ int ib_umem_odp_get(struct ib_umem_odp *umem_odp, int access)
h = hstate_vma(vma);
umem->page_shift = huge_page_shift(h);
up_read(&mm->mmap_sem);
umem->hugetlb = 1;
} else {
umem->hugetlb = 0;
}
mutex_init(&umem_odp->umem_mutex);

1
include/rdma/ib_umem.h
View File

@ -48,7 +48,6 @@ struct ib_umem {
unsigned long address;
int page_shift;
u32 writable : 1;
u32 hugetlb : 1;
u32 is_odp : 1;
struct work_struct work;
struct sg_table sg_head;