[merged mm-stable] userfaultfd-convert-mcontinue_atomic_pte-to-use-a-folio.patch removed from -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

The quilt patch titled
     Subject: userfaultfd: convert mcontinue_atomic_pte() to use a folio
has been removed from the -mm tree.  Its filename was
     userfaultfd-convert-mcontinue_atomic_pte-to-use-a-folio.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: userfaultfd: convert mcontinue_atomic_pte() to use a folio
Date: Fri, 2 Sep 2022 20:46:28 +0100

shmem_getpage() is being replaced by shmem_get_folio() so use a folio
throughout this function.  Saves several calls to compound_head().

Link: https://lkml.kernel.org/r/20220902194653.1739778-33-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/userfaultfd.c |   14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

--- a/mm/userfaultfd.c~userfaultfd-convert-mcontinue_atomic_pte-to-use-a-folio
+++ a/mm/userfaultfd.c
@@ -243,20 +243,22 @@ static int mcontinue_atomic_pte(struct m
 {
 	struct inode *inode = file_inode(dst_vma->vm_file);
 	pgoff_t pgoff = linear_page_index(dst_vma, dst_addr);
+	struct folio *folio;
 	struct page *page;
 	int ret;
 
-	ret = shmem_getpage(inode, pgoff, &page, SGP_NOALLOC);
-	/* Our caller expects us to return -EFAULT if we failed to find page. */
+	ret = shmem_get_folio(inode, pgoff, &folio, SGP_NOALLOC);
+	/* Our caller expects us to return -EFAULT if we failed to find folio */
 	if (ret == -ENOENT)
 		ret = -EFAULT;
 	if (ret)
 		goto out;
-	if (!page) {
+	if (!folio) {
 		ret = -EFAULT;
 		goto out;
 	}
 
+	page = folio_file_page(folio, pgoff);
 	if (PageHWPoison(page)) {
 		ret = -EIO;
 		goto out_release;
@@ -267,13 +269,13 @@ static int mcontinue_atomic_pte(struct m
 	if (ret)
 		goto out_release;
 
-	unlock_page(page);
+	folio_unlock(folio);
 	ret = 0;
 out:
 	return ret;
 out_release:
-	unlock_page(page);
-	put_page(page);
+	folio_unlock(folio);
+	folio_put(folio);
 	goto out;
 }
 
_

Patches currently in -mm which might be from willy@infradead.org are