+ mm-memory-convert-do_shared_fault-to-folios.patch added to mm-unstable branch

+ mm-memory-convert-do_shared_fault-to-folios.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/memory: convert do_shared_fault() to folios
has been added to the -mm mm-unstable branch.  Its filename is
     mm-memory-convert-do_shared_fault-to-folios.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-convert-do_shared_fault-to-folios.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: mm/memory: convert do_shared_fault() to folios
Date: Thu, 6 Jul 2023 09:38:46 -0700

Saves three implicit calls to compound_head().

Link: https://lkml.kernel.org/r/20230706163847.403202-3-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: ZhangPeng <zhangpeng362@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

--- a/mm/memory.c~mm-memory-convert-do_shared_fault-to-folios
+++ a/mm/memory.c
@@ -4608,21 +4608,24 @@ static vm_fault_t do_shared_fault(struct
 {
 	struct vm_area_struct *vma = vmf->vma;
 	vm_fault_t ret, tmp;
+	struct folio *folio;
 
 	ret = __do_fault(vmf);
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))
 		return ret;
 
+	folio = page_folio(vmf->page);
+
 	/*
 	 * Check if the backing address space wants to know that the page is
 	 * about to become writable
 	 */
 	if (vma->vm_ops->page_mkwrite) {
-		unlock_page(vmf->page);
+		folio_unlock(folio);
 		tmp = do_page_mkwrite(vmf);
 		if (unlikely(!tmp ||
 				(tmp & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))) {
-			put_page(vmf->page);
+			folio_put(folio);
 			return tmp;
 		}
 	}
@@ -4630,8 +4633,8 @@ static vm_fault_t do_shared_fault(struct
 	ret |= finish_fault(vmf);
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE |
 					VM_FAULT_RETRY))) {
-		unlock_page(vmf->page);
-		put_page(vmf->page);
+		folio_unlock(folio);
+		folio_put(folio);
 		return ret;
 	}
 
_

Patches currently in -mm which might be from sidhartha.kumar@oracle.com are

mm-increase-usage-of-folio_next_index-helper.patch
mm-memory-convert-do_page_mkwrite-to-use-folios.patch
mm-memory-convert-wp_page_shared-to-use-folios.patch
mm-memory-convert-do_shared_fault-to-folios.patch
mm-memory-convert-do_read_fault-to-use-folios.patch

+ mm-memory-convert-do_shared_fault-to-folios.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/memory: convert do_shared_fault() to folios
has been added to the -mm mm-unstable branch.  Its filename is
     mm-memory-convert-do_shared_fault-to-folios.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-convert-do_shared_fault-to-folios.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Subject: mm/memory: convert do_shared_fault() to folios
Date: Sun, 2 Jul 2023 22:58:49 -0700

Saves three implicit calls to compound_head().

Link: https://lkml.kernel.org/r/20230703055850.227169-3-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: ZhangPeng <zhangpeng362@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/mm/memory.c~mm-memory-convert-do_shared_fault-to-folios
+++ a/mm/memory.c
@@ -4605,6 +4605,7 @@ static vm_fault_t do_shared_fault(struct
 {
 	struct vm_area_struct *vma = vmf->vma;
 	vm_fault_t ret, tmp;
+	struct folio *folio = page_folio(vmf->page);
 
 	ret = __do_fault(vmf);
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))
@@ -4615,11 +4616,11 @@ static vm_fault_t do_shared_fault(struct
 	 * about to become writable
 	 */
 	if (vma->vm_ops->page_mkwrite) {
-		unlock_page(vmf->page);
+		folio_unlock(folio);
 		tmp = do_page_mkwrite(vmf);
 		if (unlikely(!tmp ||
 				(tmp & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)))) {
-			put_page(vmf->page);
+			folio_put(folio);
 			return tmp;
 		}
 	}
@@ -4627,8 +4628,8 @@ static vm_fault_t do_shared_fault(struct
 	ret |= finish_fault(vmf);
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE |
 					VM_FAULT_RETRY))) {
-		unlock_page(vmf->page);
-		put_page(vmf->page);
+		folio_unlock(folio);
+		folio_put(folio);
 		return ret;
 	}
 
_

Patches currently in -mm which might be from sidhartha.kumar@oracle.com are

mm-increase-usage-of-folio_next_index-helper.patch
mm-memory-convert-do_page_mkwrite-to-use-folios.patch
mm-memory-convert-wp_page_shared-to-use-folios.patch
mm-memory-convert-do_shared_fault-to-folios.patch
mm-memory-convert-do_read_fault-to-use-folios.patch