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mm/hmm: convert various hmm_pfn_* to device_entry which is a better name

Kaynağa Gözat 
Convert hmm_pfn_* to device_entry_* as here we are dealing with device
driver specific entry format and hmm provide helpers to allow differents
components (including HMM) to create/parse device entry.

We keep wrapper with the old name so that we can convert driver to use the
new API in stages in each device driver tree.  This will get remove once
all driver are converted.

Link: http://lkml.kernel.org/r/20190403193318.16478-13-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bu işleme şunda yer alıyor:
Jérôme Glisse
2019-05-13 17:20:31 -07:00
işlemeyi yapan: Linus Torvalds
ebeveyn 55c0ece82a
işleme 391aab11e9
2 değiştirilmiş dosya ile 75 ekleme ve 37 silme
Yama Dosyasını İndir Diff Dosyasını İndir Tüm dosyaları genişlet Tüm dosyaları daralt

19
mm/hmm.c
Dosyayı Görüntüle

@@ -543,7 +543,7 @@ static int hmm_vma_handle_pmd(struct mm_walk *walk,
if (unlikely(!hmm_vma_walk->pgmap))
return -EBUSY;
}
pfns[i] = hmm_pfn_from_pfn(range, pfn) | cpu_flags;
pfns[i] = hmm_device_entry_from_pfn(range, pfn) | cpu_flags;
}
if (hmm_vma_walk->pgmap) {
put_dev_pagemap(hmm_vma_walk->pgmap);
@@ -611,7 +611,8 @@ static int hmm_vma_handle_pte(struct mm_walk *walk, unsigned long addr,
&fault, &write_fault);
if (fault || write_fault)
goto fault;
*pfn = hmm_pfn_from_pfn(range, swp_offset(entry));
*pfn = hmm_device_entry_from_pfn(range,
swp_offset(entry));
*pfn |= cpu_flags;
return 0;
}
@@ -649,7 +650,7 @@ static int hmm_vma_handle_pte(struct mm_walk *walk, unsigned long addr,
return -EFAULT;
}
*pfn = hmm_pfn_from_pfn(range, pte_pfn(pte)) | cpu_flags;
*pfn = hmm_device_entry_from_pfn(range, pte_pfn(pte)) | cpu_flags;
return 0;
fault:
@@ -803,7 +804,8 @@ again:
hmm_vma_walk->pgmap);
if (unlikely(!hmm_vma_walk->pgmap))
return -EBUSY;
pfns[i] = hmm_pfn_from_pfn(range, pfn) | cpu_flags;
pfns[i] = hmm_device_entry_from_pfn(range, pfn) |
cpu_flags;
}
if (hmm_vma_walk->pgmap) {
put_dev_pagemap(hmm_vma_walk->pgmap);
@@ -879,7 +881,8 @@ static int hmm_vma_walk_hugetlb_entry(pte_t *pte, unsigned long hmask,
pfn = pte_pfn(entry) + ((start & mask) >> range->page_shift);
for (; addr < end; addr += size, i++, pfn += pfn_inc)
range->pfns[i] = hmm_pfn_from_pfn(range, pfn) | cpu_flags;
range->pfns[i] = hmm_device_entry_from_pfn(range, pfn) |
cpu_flags;
hmm_vma_walk->last = end;
unlock:
@@ -1222,7 +1225,7 @@ long hmm_range_dma_map(struct hmm_range *range,
*/
daddrs[i] = 0;
page = hmm_pfn_to_page(range, range->pfns[i]);
page = hmm_device_entry_to_page(range, range->pfns[i]);
if (page == NULL)
continue;
@@ -1252,7 +1255,7 @@ unmap:
enum dma_data_direction dir = DMA_TO_DEVICE;
struct page *page;
page = hmm_pfn_to_page(range, range->pfns[i]);
page = hmm_device_entry_to_page(range, range->pfns[i]);
if (page == NULL)
continue;
@@ -1307,7 +1310,7 @@ long hmm_range_dma_unmap(struct hmm_range *range,
enum dma_data_direction dir = DMA_TO_DEVICE;
struct page *page;
page = hmm_pfn_to_page(range, range->pfns[i]);
page = hmm_device_entry_to_page(range, range->pfns[i]);
if (page == NULL)
continue;