From 72827e5c2bcb86d56f8a8aa78fde0085d8535567 Mon Sep 17 00:00:00 2001
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: Thu, 12 May 2022 20:23:04 -0700
Subject: [PATCH] mm/shmem: convert shmem_alloc_and_acct_page to use a folio
Convert shmem_alloc_hugepage() to return the folio that it uses and use a
folio throughout shmem_alloc_and_acct_page(). Continue to return a page
from shmem_alloc_and_acct_page() for now.
Link: https://lkml.kernel.org/r/20220504182857.4013401-22-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/shmem.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 668d054728bc..d5b23932357d 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1523,7 +1523,7 @@ static gfp_t limit_gfp_mask(gfp_t huge_gfp, gfp_t limit_gfp)
return result;
}
-static struct page *shmem_alloc_hugepage(gfp_t gfp,
+static struct folio *shmem_alloc_hugefolio(gfp_t gfp,
struct shmem_inode_info *info, pgoff_t index)
{
struct vm_area_struct pvma;
@@ -1541,7 +1541,7 @@ static struct page *shmem_alloc_hugepage(gfp_t gfp,
shmem_pseudo_vma_destroy(&pvma);
if (!folio)
count_vm_event(THP_FILE_FALLBACK);
- return &folio->page;
+ return folio;
}
static struct folio *shmem_alloc_folio(gfp_t gfp,
@@ -1568,7 +1568,7 @@ static struct page *shmem_alloc_and_acct_page(gfp_t gfp,
pgoff_t index, bool huge)
{
struct shmem_inode_info *info = SHMEM_I(inode);
- struct page *page;
+ struct folio *folio;
int nr;
int err = -ENOSPC;
@@ -1580,13 +1580,13 @@ static struct page *shmem_alloc_and_acct_page(gfp_t gfp,
goto failed;
if (huge)
- page = shmem_alloc_hugepage(gfp, info, index);
+ folio = shmem_alloc_hugefolio(gfp, info, index);
else
- page = shmem_alloc_page(gfp, info, index);
- if (page) {
- __SetPageLocked(page);
- __SetPageSwapBacked(page);
- return page;
+ folio = shmem_alloc_folio(gfp, info, index);
+ if (folio) {
+ __folio_set_locked(folio);
+ __folio_set_swapbacked(folio);
+ return &folio->page;
}
err = -ENOMEM;