From patchwork Mon Nov 27 06:21:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13469122 Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7014C113; Sun, 26 Nov 2023 22:21:59 -0800 (PST) Received: from mail.maildlp.com (unknown [172.19.163.235]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4SdwTt3KXzz4f3kFw; Mon, 27 Nov 2023 14:21:54 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id 436C01A0C09; Mon, 27 Nov 2023 14:21:56 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgDX2hB+NWRlrcU8CA--.57866S5; Mon, 27 Nov 2023 14:21:55 +0800 (CST) From: Yu Kuai To: hch@infradead.org, ming.lei@redhat.com, axboe@kernel.dk, roger.pau@citrix.com, colyli@suse.de, kent.overstreet@gmail.com, joern@lazybastard.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, sth@linux.ibm.com, hoeppner@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, jejb@linux.ibm.com, martin.petersen@oracle.com, clm@fb.com, josef@toxicpanda.com, dsterba@suse.com, viro@zeniv.linux.org.uk, brauner@kernel.org, nico@fluxnic.net, xiang@kernel.org, chao@kernel.org, tytso@mit.edu, adilger.kernel@dilger.ca, agruenba@redhat.com, jack@suse.com, konishi.ryusuke@gmail.com, dchinner@redhat.com, linux@weissschuh.net, min15.li@samsung.com, yukuai3@huawei.com, dlemoal@kernel.org, willy@infradead.org, akpm@linux-foundation.org, hare@suse.de, p.raghav@samsung.com Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-bcachefs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, gfs2@lists.linux.dev, linux-nilfs@vger.kernel.org, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH block/for-next v2 01/16] block: add a new helper to get inode from block_device Date: Mon, 27 Nov 2023 14:21:01 +0800 Message-Id: <20231127062116.2355129-2-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231127062116.2355129-1-yukuai1@huaweicloud.com> References: <20231127062116.2355129-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgDX2hB+NWRlrcU8CA--.57866S5 X-Coremail-Antispam: 1UD129KBjvJXoW7uF1kur1UZFWfWw45tr1rtFb_yoW8Aw4rpF nxGFy5GrWDWry2gF4vvw17Zry3K3W0k3y8JrZaqw4Y9ayUtr1IgF1ktr17Ary0vrZ3KF4j gF1Y9rW8urWUC3DanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPF14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kIc2 xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v2 6r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Wrv_Gr1UMIIYrx kI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v2 6r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r 4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjfUOR6z UUUUU X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai block_devcie is allocated from bdev_alloc() by bdev_alloc_inode(), and currently block_device contains a pointer that point to the address of inode, while such inode is allocated together: bdev_alloc inode = new_inode() // inode is &bdev_inode->vfs_inode bdev = I_BDEV(inode) // bdev is &bdev_inode->bdev bdev->inode = inode Add a new helper to get address of inode from bdev by add operation instead of memory access, which is more efficiency. Signed-off-by: Yu Kuai --- block/bdev.c | 5 ----- include/linux/blk_types.h | 12 ++++++++++++ 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/block/bdev.c b/block/bdev.c index e4cfb7adb645..7509389095b7 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -30,11 +30,6 @@ #include "../fs/internal.h" #include "blk.h" -struct bdev_inode { - struct block_device bdev; - struct inode vfs_inode; -}; - static inline struct bdev_inode *BDEV_I(struct inode *inode) { return container_of(inode, struct bdev_inode, vfs_inode); diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index d5c5e59ddbd2..06de8393dcd1 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -85,6 +85,18 @@ struct block_device { #define bdev_kobj(_bdev) \ (&((_bdev)->bd_device.kobj)) +struct bdev_inode { + struct block_device bdev; + struct inode vfs_inode; +}; + +static inline struct inode *bdev_inode(struct block_device *bdev) +{ + struct bdev_inode *bi = container_of(bdev, struct bdev_inode, bdev); + + return &bi->vfs_inode; +} + /* * Block error status values. See block/blk-core:blk_errors for the details. * Alpha cannot write a byte atomically, so we need to use 32-bit value.