From patchwork Mon Nov 16 21:20:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11910887 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D82ABC63697 for ; Mon, 16 Nov 2020 21:20:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 948D722240 for ; Mon, 16 Nov 2020 21:20:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="YIwSTpF5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727520AbgKPVUb (ORCPT ); Mon, 16 Nov 2020 16:20:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727054AbgKPVUb (ORCPT ); Mon, 16 Nov 2020 16:20:31 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D79EC0613D2 for ; Mon, 16 Nov 2020 13:20:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=q5VEN3b+/NuaC3nLa7Ob8T2zF/1/3On5f5TLNt/sEKk=; b=YIwSTpF5kzhKmmKiqpPGukWFxz A7aCWJI0852003AaLLOHw/IHeQWP55bg/FJeYU7F1xFZ7/HM7j7jYTjpDLsFWPQMR0bib6SYGn7C/ vhTa06Yge43BftvOPmcoivLExDjz/umIe7WPDefb33oPtpwcH0Vnc9gFZtvY3CpTCkrGy65G1tVfY dHQOu4sciUJGGudQ/Gi4syngn3bEgucV9cNFGPzlp0/v+rjCaENkvgv9or0710un00fi3lUogtZvd gGFQ4zsG+7Jr8jVTSWAQnZM1o9Z3rDCHzVQwrjug9KXZES2hRx5L3x79HjruhRVJ0N/gAcb5mItB3 yKXR8HVw==; Received: from [2001:4bb8:180:6600:255b:7def:a93:4a09] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kelvE-0007Ot-Jt; Mon, 16 Nov 2020 21:20:25 +0000 From: Christoph Hellwig To: Jens Axboe , Minchan Kim , Mike Snitzer Cc: dm-devel@redhat.com, linux-block@vger.kernel.org Subject: [PATCH 3/6] zram: do not call set_blocksize Date: Mon, 16 Nov 2020 22:20:17 +0100 Message-Id: <20201116212020.1099154-4-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201116212020.1099154-1-hch@lst.de> References: <20201116212020.1099154-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org set_blocksize is used by file systems to use their preferred buffer cache block size. Block drivers should not set it. Signed-off-by: Christoph Hellwig --- drivers/block/zram/zram_drv.c | 11 +---------- drivers/block/zram/zram_drv.h | 1 - 2 files changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 2e6d75ec1afddb..88baa6158eaee1 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -403,13 +403,10 @@ static void reset_bdev(struct zram *zram) return; bdev = zram->bdev; - if (zram->old_block_size) - set_blocksize(bdev, zram->old_block_size); blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); /* hope filp_close flush all of IO */ filp_close(zram->backing_dev, NULL); zram->backing_dev = NULL; - zram->old_block_size = 0; zram->bdev = NULL; zram->disk->fops = &zram_devops; kvfree(zram->bitmap); @@ -454,7 +451,7 @@ static ssize_t backing_dev_store(struct device *dev, struct file *backing_dev = NULL; struct inode *inode; struct address_space *mapping; - unsigned int bitmap_sz, old_block_size = 0; + unsigned int bitmap_sz; unsigned long nr_pages, *bitmap = NULL; struct block_device *bdev = NULL; int err; @@ -509,14 +506,8 @@ static ssize_t backing_dev_store(struct device *dev, goto out; } - old_block_size = block_size(bdev); - err = set_blocksize(bdev, PAGE_SIZE); - if (err) - goto out; - reset_bdev(zram); - zram->old_block_size = old_block_size; zram->bdev = bdev; zram->backing_dev = backing_dev; zram->bitmap = bitmap; diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h index f2fd46daa76045..712354a4207c77 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -118,7 +118,6 @@ struct zram { bool wb_limit_enable; u64 bd_wb_limit; struct block_device *bdev; - unsigned int old_block_size; unsigned long *bitmap; unsigned long nr_pages; #endif