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memcg: use OFP_PEAK_UNSET instead of -1

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Patch series "Some cleanup for memcg", v4.


This patch (of 4):

The 'OFP_PEAK_UNSET' has been defined, use it instead of '-1'.

Link: https://lkml.kernel.org/r/20250124073514.2375622-1-chenridong@huaweicloud.com
Link: https://lkml.kernel.org/r/20250124073514.2375622-2-chenridong@huaweicloud.com
Signed-off-by: Chen Ridong <chenridong@huawei.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Acked-by: David Finkel <davidf@vimeo.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wang Weiyang <wangweiyang2@huawei.com>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Chen Ridong 2025-01-24 07:35:11 +00:00 committed by Andrew Morton
parent 6a36757715
commit 1c81f1a699
1 changed files with 1 additions and 1 deletions
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2
mm/memcontrol.c
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@ -4013,7 +4013,7 @@ static ssize_t peak_write(struct kernfs_open_file *of, char *buf, size_t nbytes,
WRITE_ONCE(peer_ctx->value, usage);
/* initial write, register watcher */
if (ofp->value == -1)
if (ofp->value == OFP_PEAK_UNSET)
list_add(&ofp->list, watchers);
WRITE_ONCE(ofp->value, usage);