The patch titled
Subject: buffer: use b_folio in end_buffer_async_write()
has been added to the -mm mm-unstable branch. Its filename is
buffer-use-b_folio-in-end_buffer_async_write.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/buffer-use-b_folio-in-end_buffer_async_write.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: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: buffer: use b_folio in end_buffer_async_write()
Date: Thu, 15 Dec 2022 21:43:55 +0000
Save 76 bytes from avoiding the call to compound_head() in SetPageError().
Also avoid the call to compound_head() in end_page_writeback().
Link: https://lkml.kernel.org/r/20221215214402.3522366-6-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/buffer.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/fs/buffer.c~buffer-use-b_folio-in-end_buffer_async_write
+++ a/fs/buffer.c
@@ -344,21 +344,21 @@ void end_buffer_async_write(struct buffe
unsigned long flags;
struct buffer_head *first;
struct buffer_head *tmp;
- struct page *page;
+ struct folio *folio;
BUG_ON(!buffer_async_write(bh));
- page = bh->b_page;
+ folio = bh->b_folio;
if (uptodate) {
set_buffer_uptodate(bh);
} else {
buffer_io_error(bh, ", lost async page write");
mark_buffer_write_io_error(bh);
clear_buffer_uptodate(bh);
- SetPageError(page);
+ folio_set_error(folio);
}
- first = page_buffers(page);
+ first = folio_buffers(folio);
spin_lock_irqsave(&first->b_uptodate_lock, flags);
clear_buffer_async_write(bh);
@@ -372,7 +372,7 @@ void end_buffer_async_write(struct buffe
tmp = tmp->b_this_page;
}
spin_unlock_irqrestore(&first->b_uptodate_lock, flags);
- end_page_writeback(page);
+ folio_end_writeback(folio);
return;
still_busy:
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
buffer-add-b_folio-as-an-alias-of-b_page.patch
buffer-replace-obvious-uses-of-b_page-with-b_folio.patch
buffer-use-b_folio-in-touch_buffer.patch
buffer-use-b_folio-in-end_buffer_async_read.patch
buffer-use-b_folio-in-end_buffer_async_write.patch
page_io-remove-buffer_head-include.patch
buffer-use-b_folio-in-mark_buffer_dirty.patch
gfs2-replace-obvious-uses-of-b_page-with-b_folio.patch
jbd2-replace-obvious-uses-of-b_page-with-b_folio.patch
nilfs2-replace-obvious-uses-of-b_page-with-b_folio.patch
reiserfs-replace-obvious-uses-of-b_page-with-b_folio.patch
mpage-use-b_folio-in-do_mpage_readpage.patch
