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
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------------------------------------------------------
From: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
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@xxxxxxxxxx
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Reviewed-by: ZhangPeng <zhangpeng362@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx 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
