The patch titled
Subject: memcg: replace memcg ID idr with xarray
has been added to the -mm mm-unstable branch. Its filename is
memcg-replace-memcg-id-idr-with-xarray-v2.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memcg-replace-memcg-id-idr-with-xarray-v2.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: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Subject: memcg: replace memcg ID idr with xarray
Date: Thu, 15 Aug 2024 08:54:02 -0700
fix error path in mem_cgroup_alloc(), per Dan
Link: https://lkml.kernel.org/r/20240815155402.3630804-1-shakeel.butt@xxxxxxxxx
Signed-off-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Suggested-by: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Reviewed-by: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/mm/memcontrol.c~memcg-replace-memcg-id-idr-with-xarray-v2
+++ a/mm/memcontrol.c
@@ -3496,16 +3496,17 @@ static struct mem_cgroup *mem_cgroup_all
struct mem_cgroup *memcg;
int node, cpu;
int __maybe_unused i;
- long error = -ENOMEM;
+ long error;
memcg = kzalloc(struct_size(memcg, nodeinfo, nr_node_ids), GFP_KERNEL);
if (!memcg)
- return ERR_PTR(error);
+ return ERR_PTR(-ENOMEM);
error = xa_alloc(&mem_cgroup_ids, &memcg->id.id, NULL,
XA_LIMIT(1, MEM_CGROUP_ID_MAX), GFP_KERNEL);
if (error)
goto fail;
+ error = -ENOMEM;
memcg->vmstats = kzalloc(sizeof(struct memcg_vmstats),
GFP_KERNEL_ACCOUNT);
_
Patches currently in -mm which might be from shakeel.butt@xxxxxxxxx are
memcg-increase-the-valid-index-range-for-memcg-stats.patch
memcg-replace-memcg-id-idr-with-xarray.patch
memcg-replace-memcg-id-idr-with-xarray-v2.patch
memcg-use-ratelimited-stats-flush-in-the-reclaim.patch
