The patch titled
Subject: ocfs2: use a folio in ocfs2_write_begin_inline()
has been added to the -mm mm-nonmm-unstable branch. Its filename is
ocfs2-use-a-folio-in-ocfs2_write_begin_inline.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/ocfs2-use-a-folio-in-ocfs2_write_begin_inline.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Mark Tinguely <mark.tinguely@xxxxxxxxxx>
Subject: ocfs2: use a folio in ocfs2_write_begin_inline()
Date: Thu, 5 Dec 2024 17:16:33 +0000
Retrieve a folio from the page cache instead of a page and use that
folio throught the function. Saves a couple of calls to compound_head().
Link: https://lkml.kernel.org/r/20241205171653.3179945-6-willy@xxxxxxxxxxxxx
Signed-off-by: Mark Tinguely <mark.tinguely@xxxxxxxxxx>
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Joseph Qi <joseph.qi@xxxxxxxxxxxxxxxxx>
Cc: Changwei Ge <gechangwei@xxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Jun Piao <piaojun@xxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Mark Fasheh <mark@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/aops.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)
--- a/fs/ocfs2/aops.c~ocfs2-use-a-folio-in-ocfs2_write_begin_inline
+++ a/fs/ocfs2/aops.c
@@ -1473,7 +1473,7 @@ static int ocfs2_write_begin_inline(stru
{
int ret;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct page *page;
+ struct folio *folio;
handle_t *handle;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;
@@ -1484,19 +1484,20 @@ static int ocfs2_write_begin_inline(stru
goto out;
}
- page = find_or_create_page(mapping, 0, GFP_NOFS);
- if (!page) {
+ folio = __filemap_get_folio(mapping, 0,
+ FGP_LOCK | FGP_ACCESSED | FGP_CREAT, GFP_NOFS);
+ if (IS_ERR(folio)) {
ocfs2_commit_trans(osb, handle);
- ret = -ENOMEM;
+ ret = PTR_ERR(folio);
mlog_errno(ret);
goto out;
}
/*
- * If we don't set w_num_pages then this page won't get unlocked
+ * If we don't set w_num_pages then this folio won't get unlocked
* and freed on cleanup of the write context.
*/
- wc->w_target_folio = page_folio(page);
- wc->w_pages[0] = page;
+ wc->w_target_folio = folio;
+ wc->w_pages[0] = &folio->page;
wc->w_num_pages = 1;
ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), wc->w_di_bh,
@@ -1511,8 +1512,8 @@ static int ocfs2_write_begin_inline(stru
if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL))
ocfs2_set_inode_data_inline(inode, di);
- if (!PageUptodate(page)) {
- ret = ocfs2_read_inline_data(inode, page, wc->w_di_bh);
+ if (!folio_test_uptodate(folio)) {
+ ret = ocfs2_read_inline_data(inode, &folio->page, wc->w_di_bh);
if (ret) {
ocfs2_commit_trans(osb, handle);
_
Patches currently in -mm which might be from mark.tinguely@xxxxxxxxxx are
ocfs2-convert-w_target_page-to-w_target_folio.patch
ocfs2-use-a-folio-in-ocfs2_zero_new_buffers.patch
ocfs2-use-a-folio-in-ocfs2_write_begin_inline.patch
ocfs2-convert-ocfs2_readpage_inline-to-take-a-folio.patch
ocfs2-convert-ocfs2_inode_lock_with_page-to-ocfs2_inode_lock_with_folio.patch
ocfs2-convert-w_pages-to-w_folios.patch
ocfs2-convert-ocfs2_write_failure-to-use-a-folio.patch
ocfs2-use-a-folio-in-ocfs2_write_end_nolock.patch
ocfs2-use-a-folio-in-ocfs2_prepare_page_for_write.patch
ocfs2-use-a-folio-in-ocfs2_map_and_dirty_page.patch
ocfs2-convert-ocfs2_map_page_blocks-to-ocfs2_map_folio_blocks.patch
ocfs2-convert-ocfs2_clear_page_regions-to-ocfs2_clear_folio_regions.patch
ocfs2-use-an-array-of-folios-instead-of-an-array-of-pages.patch
ocfs2-convert-ocfs2_duplicate_clusters_by_page-to-use-a-folio.patch
ocfs2-convert-ocfs2_map_and_dirty_page-to-ocfs2_map_and_dirty_folio.patch
ocfs2-support-large-folios-in-ocfs2_zero_cluster_folios.patch
ocfs2-support-large-folios-in-ocfs2_write_zero_page.patch
