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Howlett" Cc: Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Alexander Potapenko , Marco Elver , Dmitry Vyukov , linux-mm@kvack.org, linux-kernel@vger.kernel.org, maple-tree@lists.infradead.org, kasan-dev@googlegroups.com X-Mailer: b4 0.12.4 X-Spamd-Bar: ++++++++++++ X-Spam-Score: 12.58 X-Rspamd-Server: rspamd1 Authentication-Results: smtp-out2.suse.de; dkim=none; spf=softfail (smtp-out2.suse.de: 2a07:de40:b281:104:10:150:64:97 is neither permitted nor denied by domain of vbabka@suse.cz) smtp.mailfrom=vbabka@suse.cz; dmarc=none X-Rspamd-Queue-Id: EE57F1F8BB X-Spamd-Result: default: False [12.58 / 50.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_DN_SOME(0.00)[]; R_SPF_SOFTFAIL(4.60)[~all:c]; R_RATELIMIT(0.00)[to_ip_from(RLhc4kaujr6ihojcnjq7c1jwbi)]; RCVD_COUNT_THREE(0.00)[3]; MX_GOOD(-0.01)[]; NEURAL_HAM_SHORT(-0.20)[-0.999]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(2.20)[]; MIME_TRACE(0.00)[0:+]; MID_RHS_MATCH_FROM(0.00)[]; BAYES_HAM(-0.00)[28.50%]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(1.20)[suse.cz]; NEURAL_SPAM_LONG(3.39)[0.969]; RCPT_COUNT_TWELVE(0.00)[16]; FUZZY_BLOCKED(0.00)[rspamd.com]; FREEMAIL_CC(0.00)[linux-foundation.org,linux.dev,gmail.com,google.com,kvack.org,vger.kernel.org,lists.infradead.org,googlegroups.com]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[] X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on howler.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Wed, 29 Nov 2023 01:54:18 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783891662163296673 X-GMAIL-MSGID: 1783891662163296673 Just make sure the maple_node_cache has a percpu array of size 32. Will break with CONFIG_SLAB. --- lib/maple_tree.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index bb24d84a4922..d9e7088fd9a7 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -6213,9 +6213,16 @@ bool mas_nomem(struct ma_state *mas, gfp_t gfp) void __init maple_tree_init(void) { + int ret; + maple_node_cache = kmem_cache_create("maple_node", sizeof(struct maple_node), sizeof(struct maple_node), - SLAB_PANIC, NULL); + SLAB_PANIC | SLAB_NO_MERGE, NULL); + + ret = kmem_cache_setup_percpu_array(maple_node_cache, 32); + + if (ret) + pr_warn("error %d creating percpu_array for maple_node_cache\n", ret); } /**