+ mm-page_io-rename-bio_associate_blkg_from_page.patch added to mm-new branch

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

The patch titled
     Subject: mm/page_io: rename bio_associate_blkg_from_page()
has been added to the -mm mm-new branch.  Its filename is
     mm-page_io-rename-bio_associate_blkg_from_page.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_io-rename-bio_associate_blkg_from_page.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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------------------------------------------------------
From: Tal Zussman <tz2294@columbia.edu>
Subject: mm/page_io: rename bio_associate_blkg_from_page()
Date: Sat, 29 Aug 2026 15:09:03 -0400

This function takes a folio.  Rename it to bio_associate_blkg_from_folio()
accordingly.  While at it, convert the macro in the !CONFIG_MEMCG ||
!CONFIG_BLK_CGROUP case to a function.

Link: https://lore.kernel.org/20260829-b4-page_io-folios-v2-4-649728091117@columbia.edu
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_io.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/mm/page_io.c~mm-page_io-rename-bio_associate_blkg_from_page
+++ a/mm/page_io.c
@@ -277,7 +277,7 @@ static bool folio_blkg_can_merge(struct
 	return can_merge;
 }
 
-static void bio_associate_blkg_from_page(struct bio *bio, struct folio *folio)
+static void bio_associate_blkg_from_folio(struct bio *bio, struct folio *folio)
 {
 	struct cgroup_subsys_state *css;
 
@@ -298,7 +298,9 @@ static bool folio_blkg_can_merge(struct
 {
 	return true;
 }
-#define bio_associate_blkg_from_page(bio, folio)		do { } while (0)
+static void bio_associate_blkg_from_folio(struct bio *bio, struct folio *folio)
+{
+}
 #endif /* CONFIG_MEMCG && CONFIG_BLK_CGROUP */
 
 static mempool_t *sio_pool;
@@ -596,7 +598,7 @@ static void swap_bdev_submit_write(struc
 			REQ_OP_WRITE | REQ_SWAP);
 	bio->bi_iter.bi_size = sio->len;
 	bio->bi_iter.bi_sector = swap_folio_sector(bio_first_folio_all(bio));
-	bio_associate_blkg_from_page(bio, bio_first_folio_all(bio));
+	bio_associate_blkg_from_folio(bio, bio_first_folio_all(bio));
 
 	if (ctx->sis->flags & SWP_SYNCHRONOUS_IO) {
 		submit_bio_wait(bio);
_

Patches currently in -mm which might be from tz2294@columbia.edu are

mm-page_io-convert-write-completion-handlers-to-folios.patch
mm-remove-pagereclaim.patch
mm-page_io-use-swap-entries-directly-in-zeromap-helpers.patch
mm-page_io-rename-bio_associate_blkg_from_page.patch
mm-page_io-refer-to-folios-in-swap_writeout-comments.patch
mm-swap-rename-__swap_writepage-to-__swap_writeout.patch