+ fsdax-introduce-page-share-for-fsdax-in-reflink-mode-fix.patch added to mm-unstable branch

+ fsdax-introduce-page-share-for-fsdax-in-reflink-mode-fix.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: fsdax: introduce page->share for fsdax in reflink mode
has been added to the -mm mm-unstable branch.  Its filename is
     fsdax-introduce-page-share-for-fsdax-in-reflink-mode-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fsdax-introduce-page-share-for-fsdax-in-reflink-mode-fix.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: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Subject: fsdax: introduce page->share for fsdax in reflink mode
Date: Fri, 2 Dec 2022 09:23:11 +0000

rename several functions

Link: https://lkml.kernel.org/r/1669972991-246-1-git-send-email-ruansy.fnst@fujitsu.com
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Darrick J. Wong <djwong@kernel.org>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/dax.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/fs/dax.c~fsdax-introduce-page-share-for-fsdax-in-reflink-mode-fix
+++ a/fs/dax.c
@@ -334,7 +334,7 @@ static unsigned long dax_end_pfn(void *e
 	for (pfn = dax_to_pfn(entry); \
 			pfn < dax_end_pfn(entry); pfn++)
 
-static inline bool dax_mapping_is_shared(struct page *page)
+static inline bool dax_page_is_shared(struct page *page)
 {
 	return (unsigned long)page->mapping == PAGE_MAPPING_DAX_SHARED;
 }
@@ -343,7 +343,7 @@ static inline bool dax_mapping_is_shared
  * Set the page->mapping with PAGE_MAPPING_DAX_SHARED flag, increase the
  * refcount.
  */
-static inline void dax_mapping_set_shared(struct page *page)
+static inline void dax_page_bump_sharing(struct page *page)
 {
 	if ((uintptr_t)page->mapping != PAGE_MAPPING_DAX_SHARED) {
 		/*
@@ -357,7 +357,7 @@ static inline void dax_mapping_set_share
 	page->share++;
 }
 
-static inline unsigned long dax_mapping_decrease_shared(struct page *page)
+static inline unsigned long dax_page_drop_sharing(struct page *page)
 {
 	return --page->share;
 }
@@ -381,7 +381,7 @@ static void dax_associate_entry(void *en
 		struct page *page = pfn_to_page(pfn);
 
 		if (shared) {
-			dax_mapping_set_shared(page);
+			dax_page_bump_sharing(page);
 		} else {
 			WARN_ON_ONCE(page->mapping);
 			page->mapping = mapping;
@@ -402,9 +402,9 @@ static void dax_disassociate_entry(void
 		struct page *page = pfn_to_page(pfn);
 
 		WARN_ON_ONCE(trunc && page_ref_count(page) > 1);
-		if (dax_mapping_is_shared(page)) {
+		if (dax_page_is_shared(page)) {
 			/* keep the shared flag if this page is still shared */
-			if (dax_mapping_decrease_shared(page) > 0)
+			if (dax_page_drop_sharing(page) > 0)
 				continue;
 		} else
 			WARN_ON_ONCE(page->mapping && page->mapping != mapping);
_

Patches currently in -mm which might be from ruansy.fnst@fujitsu.com are

fsdax-introduce-page-share-for-fsdax-in-reflink-mode.patch
fsdax-introduce-page-share-for-fsdax-in-reflink-mode-fix.patch
fsdax-invalidate-pages-when-cow.patch
fsdax-zero-the-edges-if-source-is-hole-or-unwritten.patch
fsdaxxfs-set-the-shared-flag-when-file-extent-is-shared.patch
fsdax-dedupe-iter-two-files-at-the-same-time.patch
xfs-use-dax-ops-for-zero-and-truncate-in-fsdax-mode.patch
fsdaxxfs-port-unshare-to-fsdax.patch
xfs-remove-restrictions-for-fsdax-and-reflink.patch