[PATCH v3 1/3] percpu: Fix wrong chunk hints update

Joonwon Kang
2026-04-10T17:44:27Z

Chunk end offset was set to a block end offset, which could prevent
chunk hints from being updated correctly. It was observed that the chunk
free size gets minus or shorter than the actual free size due to this.
This commit fixes it.

Signed-off-by: Joonwon Kang <joonwonkang@google.com>
---
v3: Initial version.

mm/percpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 81462ce5866e..3ecd86096641 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1054,7 +1054,7 @@ static void pcpu_block_update_hint_free(struct pcpu_chunk *chunk, int bit_off,
else
pcpu_block_update(&chunk->chunk_md,
pcpu_block_off_to_off(s_index, start),
- end);
+ pcpu_block_off_to_off(e_index, end));
}

/**
--
2.53.0.1213.gd9a14994de-goog