From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CAED5190664; Mon, 25 Aug 2025 09:21:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756113665; cv=none; b=YhxlNqrFqwaKWLIvBcnIoLTdGc/Hl+w7FGrg1JMeGwoQZcvYDC0GonezybYp75R/YaiqvtKJ9qzJC7JOC/Uq4m3bH4wtTjboyfajvi6YrDVZV2Da19J1skP01vudqX4JMy2kBLGdyW1LwjnFvICejrzMwmy23sJd5QEhgZr9ano= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756113665; c=relaxed/simple; bh=lbwwu9GkccV8IALX4pZOCD5WicHbuX6iwVCs1iocpkU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=sr4u4ffJbCgYnxgVC2dGt0gMBKetyhGDXAWfB7RdLecpDB4YJ1LMGZChuLT1MERhyIlK2bVuq6a9eb9IPLmw069pGoQMj8EssSrYZV/qUg5+3ET8f3GTdrT09OiK2Y/G0873wqjepLcGTNE8K/xW/PvoZSaIrI1MzGlmOvq4C9k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=Y+miYzet; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Y+miYzet" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Sc+4JMWsbFGBBm8p/kWO4ggW989b86QDhZeWOOAn3rI=; b=Y+miYzetmddZoPUtzWBaeCZ++j gcJOULlYnYuqAoIHehypEMijuD1lpgjTMuqg7+MAkipyyhC/N6SRqQgjM9haj7OTmUHEap5pkutun l1/wfld0HBTRJdL1Bt6/ZGyPs6HZ8xGWu1v3Ru+vHSF5mJaUNAY6KVwMHC0/i7Z6sXJIrd5p9bdFQ qE0MITL9C/h5nQjh7TFTRsQqY7H0/x7lRfo2MRKlFRtbSgwgdSW5b1K3bumHRV1m0tFkcIW2rZHvr 9drEcleajm8VQ2k2TrI/xxq6ishDtVUbPUd9yyAK4ScTTHkehWj9q3PUFLDzykIEBZWL1Chedf+Ze zIFG2wPw==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uqTNt-00000007Tvp-3p1b; Mon, 25 Aug 2025 09:21:01 +0000 Date: Mon, 25 Aug 2025 02:21:01 -0700 From: Christoph Hellwig To: Fengnan Chang Cc: Ritesh Harjani , Matthew Wilcox , "Darrick J. Wong" , brauner@kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , linux-block@vger.kernel.org Subject: Re: [PATCH] iomap: allow iomap using the per-cpu bio cache Message-ID: References: <20250822082606.66375-1-changfengnan@bytedance.com> <20250822150550.GP7942@frogsfrogsfrogs> <877byv9w6z.fsf@gmail.com> <874ityad1d.fsf@gmail.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Mon, Aug 25, 2025 at 04:51:27PM +0800, Fengnan Chang wrote: > No restrictions for now, I think we can enable this by default. > Maybe better solution is modify in bio.c? Let me do some test first. Any kind of numbers you see where this makes a different, including the workloads would also be very valuable here.