memcg: introduce memcg_uncharge

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At multiple places in memcontrol.c, the memory and memsw page counters are
being uncharged.  This is error-prone.  Let's move the functionality to a
newly introduced memcg_uncharge and call it from all those places.

Link: https://lkml.kernel.org/r/20250404013913.1663035-4-shakeel.butt@linux.dev
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

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Shakeel Butt 2025-04-03 18:39:07 -07:00 • committed by Andrew Morton

parent 65d2d15f41

commit 89f342af66

1 changed files with 12 additions and 16 deletions

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mm/memcontrol.c

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