From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F07FD91; Tue, 12 Dec 2023 17:09:20 -0800 (PST) Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4Sqcnm2cdhz4f3jZH; Wed, 13 Dec 2023 09:09:16 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id 86FC11A098C; Wed, 13 Dec 2023 09:09:17 +0800 (CST) Received: from [10.174.176.73] (unknown [10.174.176.73]) by APP1 (Coremail) with SMTP id cCh0CgBntQs5BHllRkz5DQ--.6696S3; Wed, 13 Dec 2023 09:09:16 +0800 (CST) Subject: Re: [PATCH RFC v2 for-6.8/block 01/18] block: add some bdev apis To: Christoph Hellwig , Yu Kuai Cc: 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, willy@infradead.org, akpm@linux-foundation.org, p.raghav@samsung.com, hare@suse.de, 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, yi.zhang@huawei.com, yangerkun@huawei.com, "yukuai (C)" References: <20231211140552.973290-1-yukuai1@huaweicloud.com> <20231211140552.973290-2-yukuai1@huaweicloud.com> From: Yu Kuai Message-ID: <893e2764-65a6-ef73-5ddf-95cd9f97cb19@huaweicloud.com> Date: Wed, 13 Dec 2023 09:09:13 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 Precedence: bulk X-Mailing-List: linux-bcache@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=gbk; format=flowed Content-Transfer-Encoding: 8bit X-CM-TRANSID:cCh0CgBntQs5BHllRkz5DQ--.6696S3 X-Coremail-Antispam: 1UD129KBjvdXoW7Gw4fJw1rAF1UKF4fJrWDJwb_yoWfurcEqr n7Cryv9w1jvws5Wr4UKFy5JrWrJFWYyr43Xay8ta4Iq3s8Xa18Ar92ka48uas8Ww47Z3ZI 9FsxuFy8uF4fujkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbaxFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j 6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oV Cq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcVAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kI c2xKxwCYjI0SjxkI62AI1cAE67vIY487MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4 AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE 17CEb7AF67AKxVWrXVW8Jr1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCw CI42IY6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWrZr1j 6s0DMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYx BIdaVFxhVjvjDU0xZFpf9x0JUd8n5UUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Hi, ÔÚ 2023/12/12 21:16, Christoph Hellwig дµÀ: >> +void invalidate_bdev_range(struct block_device *bdev, pgoff_t start, >> + pgoff_t end) >> +{ >> + invalidate_mapping_pages(bdev->bd_inode->i_mapping, start, end); >> +} >> +EXPORT_SYMBOL_GPL(invalidate_bdev_range); > > Can we have kerneldoc comments for the new helpers please? Of course, will definitely do this in v3. > >> +struct folio *__bdev_get_folio(struct block_device *bdev, loff_t pos, >> + fgf_t fgp_flags, gfp_t gfp) >> +{ >> + return __filemap_get_folio(bdev->bd_inode->i_mapping, pos >> PAGE_SHIFT, >> + fgp_flags, gfp); >> +} >> +EXPORT_SYMBOL_GPL(__bdev_get_folio); > > It's a bit silly to have a __-prefixed API without a version that > doesn't have the prefix, so I'd prefer to drop it. Unless willy has > a good argument for keeping it the same as the filemap API. Ok, I'll drop it if willy doesn't against this. Thanks, Kuai > > . >