The patch titled
Subject: mm/writeback: move __set_page_dirty() to core mm
has been added to the -mm tree. Its filename is
mm-writeback-move-__set_page_dirty-to-core-mm.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-writeback-move-__set_page_dirty-to-core-mm.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-writeback-move-__set_page_dirty-to-core-mm.patch
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/writeback: move __set_page_dirty() to core mm
Patch series "Further set_page_dirty cleanups".
Prompted by Christoph's recent patches, here are some more patches to
improve the state of set_page_dirty(). They're all from the folio tree,
so they've been tested to a certain extent.
This patch (of 6):
Nothing in __set_page_dirty() is specific to buffer_head, so move it to
mm/page-writeback.c. That removes the only caller of
account_page_dirtied() outside of page-writeback.c, so make it static.
Link: https://lkml.kernel.org/r/20210615162342.1669332-1-willy@xxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20210615162342.1669332-2-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/buffer.c | 24 ------------------------
include/linux/mm.h | 1 -
mm/page-writeback.c | 27 ++++++++++++++++++++++++++-
3 files changed, 26 insertions(+), 26 deletions(-)
--- a/fs/buffer.c~mm-writeback-move-__set_page_dirty-to-core-mm
+++ a/fs/buffer.c
@@ -589,30 +589,6 @@ void mark_buffer_dirty_inode(struct buff
EXPORT_SYMBOL(mark_buffer_dirty_inode);
/*
- * Mark the page dirty, and set it dirty in the page cache, and mark the inode
- * dirty.
- *
- * If warn is true, then emit a warning if the page is not uptodate and has
- * not been truncated.
- *
- * The caller must hold lock_page_memcg().
- */
-void __set_page_dirty(struct page *page, struct address_space *mapping,
- int warn)
-{
- unsigned long flags;
-
- xa_lock_irqsave(&mapping->i_pages, flags);
- if (page->mapping) { /* Race with truncate? */
- WARN_ON_ONCE(warn && !PageUptodate(page));
- account_page_dirtied(page, mapping);
- __xa_set_mark(&mapping->i_pages, page_index(page),
- PAGECACHE_TAG_DIRTY);
- }
- xa_unlock_irqrestore(&mapping->i_pages, flags);
-}
-
-/*
* Add a page to the dirty page list.
*
* It is a sad fact of life that this function is called from several places
--- a/include/linux/mm.h~mm-writeback-move-__set_page_dirty-to-core-mm
+++ a/include/linux/mm.h
@@ -1855,7 +1855,6 @@ int __set_page_dirty_nobuffers(struct pa
int __set_page_dirty_no_writeback(struct page *page);
int redirty_page_for_writepage(struct writeback_control *wbc,
struct page *page);
-void account_page_dirtied(struct page *page, struct address_space *mapping);
void account_page_cleaned(struct page *page, struct address_space *mapping,
struct bdi_writeback *wb);
int set_page_dirty(struct page *page);
--- a/mm/page-writeback.c~mm-writeback-move-__set_page_dirty-to-core-mm
+++ a/mm/page-writeback.c
@@ -2425,7 +2425,8 @@ int __set_page_dirty_no_writeback(struct
*
* NOTE: This relies on being atomic wrt interrupts.
*/
-void account_page_dirtied(struct page *page, struct address_space *mapping)
+static void account_page_dirtied(struct page *page,
+ struct address_space *mapping)
{
struct inode *inode = mapping->host;
@@ -2467,6 +2468,30 @@ void account_page_cleaned(struct page *p
}
/*
+ * Mark the page dirty, and set it dirty in the page cache, and mark the inode
+ * dirty.
+ *
+ * If warn is true, then emit a warning if the page is not uptodate and has
+ * not been truncated.
+ *
+ * The caller must hold lock_page_memcg().
+ */
+void __set_page_dirty(struct page *page, struct address_space *mapping,
+ int warn)
+{
+ unsigned long flags;
+
+ xa_lock_irqsave(&mapping->i_pages, flags);
+ if (page->mapping) { /* Race with truncate? */
+ WARN_ON_ONCE(warn && !PageUptodate(page));
+ account_page_dirtied(page, mapping);
+ __xa_set_mark(&mapping->i_pages, page_index(page),
+ PAGECACHE_TAG_DIRTY);
+ }
+ xa_unlock_irqrestore(&mapping->i_pages, flags);
+}
+
+/*
* For address_spaces which do not use buffers. Just tag the page as dirty in
* the xarray.
*
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-mark-idle-page-tracking-as-broken.patch
writeback-cgroup-release-dying-cgwbs-by-switching-attached-inodes-fix-3.patch
mm-writeback-move-__set_page_dirty-to-core-mm.patch
mm-writeback-use-__set_page_dirty-in-__set_page_dirty_nobuffers.patch
iomap-use-__set_page_dirty_nobuffers.patch
fs-remove-anon_set_page_dirty.patch
fs-remove-noop_set_page_dirty.patch
mm-move-page-dirtying-prototypes-from-mmh.patch
mm-make-__dump_page-static.patch
mm-debug-factor-pagepoisoned-out-of-__dump_page.patch
mm-page_owner-constify-dump_page_owner.patch
mm-make-compound_head-const-preserving.patch
mm-constify-get_pfnblock_flags_mask-and-get_pfnblock_migratetype.patch
mm-constify-page_count-and-page_ref_count.patch
mm-optimise-nth_page-for-contiguous-memmap.patch
mm-hugetlb-free-the-vmemmap-pages-associated-with-each-hugetlb-page-fix.patch
mm-hugetlb-alloc-the-vmemmap-pages-associated-with-each-hugetlb-page-fix-2.patch
mm-thp-fix-strncpy-warning.patch
