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| author | Baoquan He <bhe@redhat.com> | 2022-10-24 10:14:30 +0200 |
|---|---|---|
| committer | Dennis Zhou <dennis@kernel.org> | 2022-11-08 07:59:06 +0100 |
| commit | e04cb6976340d5ebf2b28ad91bf6a13a285aa566 (patch) | |
| tree | 63bef7a09be17db1345adb1227d126d5f82d1d9e /mm | |
| parent | mm/percpu: use list_first_entry_or_null in pcpu_reclaim_populated() (diff) | |
| download | linux-e04cb6976340d5ebf2b28ad91bf6a13a285aa566.tar.xz linux-e04cb6976340d5ebf2b28ad91bf6a13a285aa566.zip | |
mm/percpu: Update the code comment when creating new chunk
The lock pcpu_alloc_mutex taking code has been moved to the beginning of
pcpu_allo() if it's non atomic allocation. So the code comment above
above pcpu_create_chunk() callsite need be updated.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/percpu.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index 841bb93aaae6..68d5ba61c935 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1817,16 +1817,12 @@ restart: spin_unlock_irqrestore(&pcpu_lock, flags); - /* - * No space left. Create a new chunk. We don't want multiple - * tasks to create chunks simultaneously. Serialize and create iff - * there's still no empty chunk after grabbing the mutex. - */ if (is_atomic) { err = "atomic alloc failed, no space left"; goto fail; } + /* No space left. Create a new chunk. */ if (list_empty(&pcpu_chunk_lists[pcpu_free_slot])) { chunk = pcpu_create_chunk(pcpu_gfp); if (!chunk) { |