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@xxxxxxxxxxx>
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@xxxxxxxxxxx
Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx>
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Darrick J. Wong <djwong@xxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxx 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
