From patchwork Wed Aug 23 10:48:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 13362090 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3300EEE49B8 for ; Wed, 23 Aug 2023 10:50:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234197AbjHWKuY (ORCPT ); Wed, 23 Aug 2023 06:50:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233789AbjHWKtg (ORCPT ); Wed, 23 Aug 2023 06:49:36 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70D53CFE; Wed, 23 Aug 2023 03:49:25 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 57A0721EE9; Wed, 23 Aug 2023 10:48:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1692787738; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5s9tef63uXp7Cu9e1OLj6+YD/eKKzIvpOoyUWBFd9hk=; b=uqHAPU+zpWOqO73QMtZ5dHj8XiWzcxZV/vDYMcPNxwf6SoR/9JK5eUHBuU6HmhVE1kLohn S/WGl/JuLQL2T5lcOBGRxEi+63LPqs19u0WOdQiOF8mDQdX/ZbzIQzKqfv262O5P6DqX66 335kHKkL4nH4sh8ehaknY0axk7215Mo= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1692787738; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5s9tef63uXp7Cu9e1OLj6+YD/eKKzIvpOoyUWBFd9hk=; b=707OUHV+nBcJ1RUPwoCnNlAg5vc8ef12Sp0BtjXBGK1gWcWPk01OyJZ5odqMiz11adgm7+ CoEOmvkXy9eDIYBA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 48804139D0; Wed, 23 Aug 2023 10:48:58 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id KSuFERrk5WQ6IAAAMHmgww (envelope-from ); Wed, 23 Aug 2023 10:48:58 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id 39846A0782; Wed, 23 Aug 2023 12:48:57 +0200 (CEST) From: Jan Kara To: Christian Brauner Cc: Jens Axboe , , , Christoph Hellwig , Jan Kara , Minchan Kim , Sergey Senozhatsky , Christoph Hellwig Subject: [PATCH 08/29] zram: Convert to use bdev_open_by_dev() Date: Wed, 23 Aug 2023 12:48:19 +0200 Message-Id: <20230823104857.11437-8-jack@suse.cz> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230818123232.2269-1-jack@suse.cz> References: <20230818123232.2269-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=4019; i=jack@suse.cz; h=from:subject; bh=JLZRaOcUzs1CeWC4QBrmAW+ZuHqJPQx8hA0R9uvVbMo=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBk5eP1DGDykqGvuqR48NK/HIl362WeY6d8AwIy/5V/ cGhznbaJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCZOXj9QAKCRCcnaoHP2RA2Rz9CA CNTbD1+EkPvWBjqwvBdBXt8UGXOWwEeg+Jr9u5uewFmJvVD8FxjAQLMAGtTMWzCpS+sKw+3sv8Oc3C jlmu5Zne0Pe6q3SGw/RAv+oa9p71A3TLkI/QZAGWFT0toEzeZwrU/rD5qSXNUjuKfdmyYu3YYMCZSk Lo946J4Je+c6qC9HrupQsYOy9so/fnDU3me7Kqx+jvhM9r7rXJLn92tdDRD446A6xoTpreHm6/wMck cw+EeOUAdhfhJeFl4dXYCQF8noHhQq4h8DKt/kV7TvBO6t+ie9lBWoH43hB9+d3WWgHwjnX4++xd3G vu3GWEgqLsITm+4g/a5xHVqEh/atOs X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Convert zram to use bdev_open_by_dev() and pass the handle around. CC: Minchan Kim CC: Sergey Senozhatsky Acked-by: Christoph Hellwig Reviewed-by: Sergey Senozhatsky Signed-off-by: Jan Kara Acked-by: Christian Brauner --- drivers/block/zram/zram_drv.c | 31 ++++++++++++++----------------- drivers/block/zram/zram_drv.h | 2 +- 2 files changed, 15 insertions(+), 18 deletions(-) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 5676e6dd5b16..dfbb102d9c79 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -414,17 +414,14 @@ static ssize_t writeback_limit_show(struct device *dev, static void reset_bdev(struct zram *zram) { - struct block_device *bdev; - if (!zram->backing_dev) return; - bdev = zram->bdev; - blkdev_put(bdev, zram); + bdev_release(zram->bdev_handle); /* hope filp_close flush all of IO */ filp_close(zram->backing_dev, NULL); zram->backing_dev = NULL; - zram->bdev = NULL; + zram->bdev_handle = NULL; zram->disk->fops = &zram_devops; kvfree(zram->bitmap); zram->bitmap = NULL; @@ -470,7 +467,7 @@ static ssize_t backing_dev_store(struct device *dev, struct address_space *mapping; unsigned int bitmap_sz; unsigned long nr_pages, *bitmap = NULL; - struct block_device *bdev = NULL; + struct bdev_handle *bdev_handle = NULL; int err; struct zram *zram = dev_to_zram(dev); @@ -507,11 +504,11 @@ static ssize_t backing_dev_store(struct device *dev, goto out; } - bdev = blkdev_get_by_dev(inode->i_rdev, BLK_OPEN_READ | BLK_OPEN_WRITE, - zram, NULL); - if (IS_ERR(bdev)) { - err = PTR_ERR(bdev); - bdev = NULL; + bdev_handle = bdev_open_by_dev(inode->i_rdev, + BLK_OPEN_READ | BLK_OPEN_WRITE, zram, NULL); + if (IS_ERR(bdev_handle)) { + err = PTR_ERR(bdev_handle); + bdev_handle = NULL; goto out; } @@ -525,7 +522,7 @@ static ssize_t backing_dev_store(struct device *dev, reset_bdev(zram); - zram->bdev = bdev; + zram->bdev_handle = bdev_handle; zram->backing_dev = backing_dev; zram->bitmap = bitmap; zram->nr_pages = nr_pages; @@ -538,8 +535,8 @@ static ssize_t backing_dev_store(struct device *dev, out: kvfree(bitmap); - if (bdev) - blkdev_put(bdev, zram); + if (bdev_handle) + bdev_release(bdev_handle); if (backing_dev) filp_close(backing_dev, NULL); @@ -581,7 +578,7 @@ static void read_from_bdev_async(struct zram *zram, struct page *page, { struct bio *bio; - bio = bio_alloc(zram->bdev, 1, parent->bi_opf, GFP_NOIO); + bio = bio_alloc(zram->bdev_handle->bdev, 1, parent->bi_opf, GFP_NOIO); bio->bi_iter.bi_sector = entry * (PAGE_SIZE >> 9); __bio_add_page(bio, page, PAGE_SIZE, 0); bio_chain(bio, parent); @@ -697,7 +694,7 @@ static ssize_t writeback_store(struct device *dev, continue; } - bio_init(&bio, zram->bdev, &bio_vec, 1, + bio_init(&bio, zram->bdev_handle->bdev, &bio_vec, 1, REQ_OP_WRITE | REQ_SYNC); bio.bi_iter.bi_sector = blk_idx * (PAGE_SIZE >> 9); __bio_add_page(&bio, page, PAGE_SIZE, 0); @@ -779,7 +776,7 @@ static void zram_sync_read(struct work_struct *work) struct bio_vec bv; struct bio bio; - bio_init(&bio, zw->zram->bdev, &bv, 1, REQ_OP_READ); + bio_init(&bio, zw->zram->bdev_handle->bdev, &bv, 1, REQ_OP_READ); bio.bi_iter.bi_sector = zw->entry * (PAGE_SIZE >> 9); __bio_add_page(&bio, zw->page, PAGE_SIZE, 0); zw->error = submit_bio_wait(&bio); diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h index ca7a15bd4845..d090753f97be 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -132,7 +132,7 @@ struct zram { spinlock_t wb_limit_lock; bool wb_limit_enable; u64 bd_wb_limit; - struct block_device *bdev; + struct bdev_handle *bdev_handle; unsigned long *bitmap; unsigned long nr_pages; #endif