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Tue, 25 Oct 2022 19:15:24 -0700 (PDT) Date: Wed, 26 Oct 2022 11:15:20 +0900 From: Sergey Senozhatsky To: Alexey Romanov Cc: minchan@kernel.org, senozhatsky@chromium.org, ngupta@vflare.org, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel@sberdevices.ru Subject: Re: [PATCH v2] zram: add size class equals check into recompression Message-ID: References: <20221025162638.7853-1-avromanov@sberdevices.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221025162638.7853-1-avromanov@sberdevices.ru> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1666750526; a=rsa-sha256; cv=none; b=zc5g3Mab+45O9pTH9o81l33uzICeHOSfsglnUHkVTyty/kDVEAb3JhRtUfJUgvREmgEJps gbwtc/QdbSrq/kb+wR8KDYgIAca6T90hie7y3qlTFiAd5542suHhz+3C6tUD2mCI+WzHda CtdJB3wWywN+70Vc3RKW03cr4fTMnto= ARC-Authentication-Results: i=1; imf30.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=bXgpMeMQ; dmarc=pass (policy=none) header.from=chromium.org; spf=pass (imf30.hostedemail.com: domain of senozhatsky@chromium.org designates 209.85.216.47 as permitted sender) smtp.mailfrom=senozhatsky@chromium.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1666750526; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=7l/phVh9ff32IB3giZcQ3ydhEdMONedR6Fn9Kqfzr3o=; b=PfL6ienGjYUTlShuYZYto2fG9dMiZxl2qIzr/tcNmD8TclmT9tFKZ+0uzUe4Xb/M6miG5y 8aOo64CUOzIFuaqwKIJY25YHYzD8rKJpIiAtdUV+Kv9M4UaBfY/z5xYUyM4U7yk1Jqo1c1 /QxoNclFzy8hg+tE+qfVSbBYOJBlZ0I= X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: B8ABB80015 X-Rspam-User: Authentication-Results: imf30.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=bXgpMeMQ; dmarc=pass (policy=none) header.from=chromium.org; spf=pass (imf30.hostedemail.com: domain of senozhatsky@chromium.org designates 209.85.216.47 as permitted sender) smtp.mailfrom=senozhatsky@chromium.org X-Stat-Signature: dc68z8um1az8og3s7fzshmy4s5tdnnbm X-HE-Tag: 1666750526-829220 X-Bogosity: Ham, tests=bogofilter, spamicity=0.001501, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On (22/10/25 19:26), Alexey Romanov wrote: > +/** > + * zs_lookup_class_index() - Returns index of the zsmalloc &size_class > + * that hold objects of the provided size. > + * @pool: zsmalloc pool to use > + * @size: object size > + * > + * Context: Any context. > + * > + * Return: the index of the zsmalloc &size_class that hold objects of the > + * provided size. > + */ > +unsigned int zs_lookup_class_index(struct zs_pool *pool, unsigned int size) > +{ > + struct size_class *class; > + > + class = pool->size_class[get_size_class_index(pool, size)]; > + > + return class->index; > +} > +EXPORT_SYMBOL_GPL(zs_lookup_class_index); I cherry-picked it with one tiny tweak: I want this to be ahead of my series (break dependency on my series). So I removed pool parameter from `get_size_class_index(pool, size)` in this patch and add it back in my series (when I change get_size_class_index() prototype).