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-rw-r--r--fs/proc/task_mmu.c42
1 files changed, 13 insertions, 29 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 5830b2e129ed..8a03759bda38 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -488,42 +488,16 @@ static void smaps_account(struct mem_size_stats *mss, struct page *page,
}
#ifdef CONFIG_SHMEM
-static unsigned long smaps_shmem_swap(struct vm_area_struct *vma,
- unsigned long addr)
-{
- struct page *page;
-
- page = find_get_entry(vma->vm_file->f_mapping,
- linear_page_index(vma, addr));
- if (!page)
- return 0;
-
- if (radix_tree_exceptional_entry(page))
- return PAGE_SIZE;
-
- page_cache_release(page);
- return 0;
-
-}
-
static int smaps_pte_hole(unsigned long addr, unsigned long end,
struct mm_walk *walk)
{
struct mem_size_stats *mss = walk->private;
- while (addr < end) {
- mss->swap += smaps_shmem_swap(walk->vma, addr);
- addr += PAGE_SIZE;
- }
+ mss->swap += shmem_partial_swap_usage(
+ walk->vma->vm_file->f_mapping, addr, end);
return 0;
}
-#else
-static unsigned long smaps_shmem_swap(struct vm_area_struct *vma,
- unsigned long addr)
-{
- return 0;
-}
#endif
static void smaps_pte_entry(pte_t *pte, unsigned long addr,
@@ -555,7 +529,17 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr,
page = migration_entry_to_page(swpent);
} else if (unlikely(IS_ENABLED(CONFIG_SHMEM) && mss->check_shmem_swap
&& pte_none(*pte))) {
- mss->swap += smaps_shmem_swap(vma, addr);
+ page = find_get_entry(vma->vm_file->f_mapping,
+ linear_page_index(vma, addr));
+ if (!page)
+ return;
+
+ if (radix_tree_exceptional_entry(page))
+ mss->swap += PAGE_SIZE;
+ else
+ page_cache_release(page);
+
+ return;
}
if (!page)