+ writeback-rename-nr_reclaimable-to-nr_dirty-in-balance_dirty_pages.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: writeback: rename nr_reclaimable to nr_dirty in balance_dirty_pages
has been added to the -mm mm-unstable branch.  Its filename is
     writeback-rename-nr_reclaimable-to-nr_dirty-in-balance_dirty_pages.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/writeback-rename-nr_reclaimable-to-nr_dirty-in-balance_dirty_pages.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: Kemeng Shi <shikemeng@huaweicloud.com>
Subject: writeback: rename nr_reclaimable to nr_dirty in balance_dirty_pages
Date: Tue, 23 Apr 2024 00:48:08 +0800

Commit 8d92890bd6b85 ("mm/writeback: discard NR_UNSTABLE_NFS, use
NR_WRITEBACK instead") removed NR_UNSTABLE_NFS and nr_reclaimable only
contains dirty page now.  Rename nr_reclaimable to nr_dirty properly.

Link: https://lkml.kernel.org/r/20240422164808.13627-5-shikemeng@huaweicloud.com
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Brian Foster <bfoster@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page-writeback.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/mm/page-writeback.c~writeback-rename-nr_reclaimable-to-nr_dirty-in-balance_dirty_pages
+++ a/mm/page-writeback.c
@@ -1694,7 +1694,7 @@ static int balance_dirty_pages(struct bd
 	struct dirty_throttle_control * const mdtc = mdtc_valid(&mdtc_stor) ?
 						     &mdtc_stor : NULL;
 	struct dirty_throttle_control *sdtc;
-	unsigned long nr_reclaimable;	/* = file_dirty */
+	unsigned long nr_dirty;
 	long period;
 	long pause;
 	long max_pause;
@@ -1715,9 +1715,9 @@ static int balance_dirty_pages(struct bd
 		unsigned long m_thresh = 0;
 		unsigned long m_bg_thresh = 0;
 
-		nr_reclaimable = global_node_page_state(NR_FILE_DIRTY);
+		nr_dirty = global_node_page_state(NR_FILE_DIRTY);
 		gdtc->avail = global_dirtyable_memory();
-		gdtc->dirty = nr_reclaimable + global_node_page_state(NR_WRITEBACK);
+		gdtc->dirty = nr_dirty + global_node_page_state(NR_WRITEBACK);
 
 		domain_dirty_limits(gdtc);
 
@@ -1768,7 +1768,7 @@ static int balance_dirty_pages(struct bd
 		 * In normal mode, we start background writeout at the lower
 		 * background_thresh, to keep the amount of dirty memory low.
 		 */
-		if (!laptop_mode && nr_reclaimable > gdtc->bg_thresh &&
+		if (!laptop_mode && nr_dirty > gdtc->bg_thresh &&
 		    !writeback_in_progress(wb))
 			wb_start_background_writeback(wb);
 
_

Patches currently in -mm which might be from shikemeng@huaweicloud.com are

writeback-collect-stats-of-all-wb-of-bdi-in-bdi_debug_stats_show.patch
writeback-support-retrieving-per-group-debug-writeback-stats-of-bdi.patch
writeback-add-wb_monitorpy-script-to-monitor-writeback-info-on-bdi.patch
writeback-rename-nr_reclaimable-to-nr_dirty-in-balance_dirty_pages.patch