+ xarray-honor-xa_flags_account-in-xas_split_alloc.patch added to mm-unstable branch

The patch titled
     Subject: xarray: honor XA_FLAGS_ACCOUNT in xas_split_alloc()
has been added to the -mm mm-unstable branch.  Its filename is
     xarray-honor-xa_flags_account-in-xas_split_alloc.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/xarray-honor-xa_flags_account-in-xas_split_alloc.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: Zi Yan <[email protected]>
Subject: xarray: honor XA_FLAGS_ACCOUNT in xas_split_alloc()
Date: Tue, 04 Aug 2026 17:04:28 -0400

XArray operations that allocate xa_nodes, such as xas_nomem() and
xas_alloc(), add __GFP_ACCOUNT when the array has XA_FLAGS_ACCOUNT set. 
This charges the allocated memory and avoids the workingset convergence
issue described by commit 7b785645e8f13 ("mm: fix page cache convergence
regression").

xas_split_alloc() does not add _GFP_ACCOUNT when XA_FLAGS_ACCOUNT is
present.  Fix it.

Link: https://lore.kernel.org/20260804-add-gfp_account-to-xas_split_alloc-v3-2-38cb3ff325c5@nvidia.com
Fixes: 6b24ca4a1a8d4 ("mm: Use multi-index entries in the page cache")
Signed-off-by: Zi Yan <[email protected]>
Reviewed-by: Lorenzo Stoakes (ARM) <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Cc: Baolin Wang <[email protected]>
Cc: Barry Song <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Dev Jain <[email protected]>
Cc: Lance Yang <[email protected]>
Cc: Liam R. Howlett <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: William Kucharski <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 lib/xarray.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/lib/xarray.c~xarray-honor-xa_flags_account-in-xas_split_alloc
+++ a/lib/xarray.c
@@ -1053,6 +1053,9 @@ void xas_split_alloc(struct xa_state *xa
 	if (xas->xa_shift + XA_CHUNK_SHIFT > order)
 		return;
 
+	if (xas->xa->xa_flags & XA_FLAGS_ACCOUNT)
+		gfp |= __GFP_ACCOUNT;
+
 	do {
 		struct xa_node *node;
 
_

Patches currently in -mm which might be from [email protected] are

mm-percpu-km-clear-page-private-before-free-them.patch
mm-compaction-stop-recording-free-page-order-in-page-private.patch
mm-huge_memory-add-page-private-check-back-in-__split_folio_to_order.patch
mm-page_alloc-make-sure-tail_page-private-is-zero-at-page-free-time.patch
mm-page_alloc-remove-set_page_private-in-prep_compound_tail.patch
mm-huge_memory-use-folios-memcg-inside-__folio_split.patch
xarray-honor-xa_flags_account-in-xas_split_alloc.patch