+ mm-remove-wb_writeout_inc.patch added to mm-new branch

+ mm-remove-wb_writeout_inc.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: mm: remove wb_writeout_inc
has been added to the -mm mm-new branch.  Its filename is
     mm-remove-wb_writeout_inc.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-wb_writeout_inc.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

The mm-new branch of mm.git is not included in linux-next

If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next

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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

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branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there most days

------------------------------------------------------
From: Christoph Hellwig <hch@lst.de>
Subject: mm: remove wb_writeout_inc
Date: Fri, 10 Jul 2026 07:10:52 +0200

Remove this entirely unused but exported function.

Link: https://lore.kernel.org/20260710051052.1839523-1-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/backing-dev.h |    2 --
 mm/page-writeback.c         |   10 ----------
 2 files changed, 12 deletions(-)

--- a/include/linux/backing-dev.h~mm-remove-wb_writeout_inc
+++ a/include/linux/backing-dev.h
@@ -76,8 +76,6 @@ static inline s64 wb_stat_sum(struct bdi
 	return percpu_counter_sum_positive(&wb->stat[item]);
 }
 
-extern void wb_writeout_inc(struct bdi_writeback *wb);
-
 /*
  * maximal error of a stat counter.
  */
--- a/mm/page-writeback.c~mm-remove-wb_writeout_inc
+++ a/mm/page-writeback.c
@@ -584,16 +584,6 @@ static inline void __wb_writeout_add(str
 				       wb->bdi->max_prop_frac, nr);
 }
 
-void wb_writeout_inc(struct bdi_writeback *wb)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	__wb_writeout_add(wb, 1);
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL_GPL(wb_writeout_inc);
-
 /*
  * On idle system, we can be called long after we scheduled because we use
  * deferred timers so count with missed periods.
_

Patches currently in -mm which might be from hch@lst.de are

mm-remove-wb_writeout_inc.patch