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

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

[Andrew Morton]

The patch titled
     Subject: mm/memory: convert do_read_fault() to use folios
has been added to the -mm mm-unstable branch.  Its filename is
     mm-memory-convert-do_read_fault-to-use-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_read_fault-to-use-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_read_fault() to use folios
Date: Sun, 2 Jul 2023 22:58:50 -0700

Saves one implicit call to compound_head()

Link: https://lkml.kernel.org/r/20230703055850.227169-4-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 |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/mm/memory.c~mm-memory-convert-do_read_fault-to-use-folios
+++ a/mm/memory.c
@@ -4539,6 +4539,7 @@ static inline bool should_fault_around(s
 static vm_fault_t do_read_fault(struct vm_fault *vmf)
 {
 	vm_fault_t ret = 0;
+	struct folio *folio = page_folio(vmf->page);
 
 	/*
 	 * Let's call ->map_pages() first and use ->fault() as fallback
@@ -4556,9 +4557,9 @@ static vm_fault_t do_read_fault(struct v
 		return ret;
 
 	ret |= finish_fault(vmf);
-	unlock_page(vmf->page);
+	folio_unlock(folio);
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))
-		put_page(vmf->page);
+		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_read_fault-to-use-folios.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/memory: convert do_read_fault() to use folios
has been added to the -mm mm-unstable branch.  Its filename is
     mm-memory-convert-do_read_fault-to-use-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_read_fault-to-use-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_read_fault() to use folios
Date: Thu, 6 Jul 2023 09:38:47 -0700

Saves one implicit call to compound_head().

Link: https://lkml.kernel.org/r/20230706163847.403202-4-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 |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/mm/memory.c~mm-memory-convert-do_read_fault-to-use-folios
+++ a/mm/memory.c
@@ -4542,6 +4542,7 @@ static inline bool should_fault_around(s
 static vm_fault_t do_read_fault(struct vm_fault *vmf)
 {
 	vm_fault_t ret = 0;
+	struct folio *folio;
 
 	/*
 	 * Let's call ->map_pages() first and use ->fault() as fallback
@@ -4559,9 +4560,10 @@ static vm_fault_t do_read_fault(struct v
 		return ret;
 
 	ret |= finish_fault(vmf);
-	unlock_page(vmf->page);
+	folio = page_folio(vmf->page);
+	folio_unlock(folio);
 	if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))
-		put_page(vmf->page);
+		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