From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 E1C3DC4708B for ; Thu, 27 May 2021 13:47:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C7310613BC for ; Thu, 27 May 2021 13:47:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236616AbhE0NtC (ORCPT ); Thu, 27 May 2021 09:49:02 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:2505 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236607AbhE0Ns4 (ORCPT ); Thu, 27 May 2021 09:48:56 -0400 Received: from dggeme752-chm.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4FrTZc2xJQzYrC5; Thu, 27 May 2021 21:44:40 +0800 (CST) Received: from huawei.com (10.175.127.227) by dggeme752-chm.china.huawei.com (10.3.19.98) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Thu, 27 May 2021 21:47:20 +0800 From: Zhang Yi To: CC: , , , , Subject: [RFC PATCH v3 8/8] fs: remove bdev_try_to_free_page callback Date: Thu, 27 May 2021 21:56:41 +0800 Message-ID: <20210527135641.420514-9-yi.zhang@huawei.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20210527135641.420514-1-yi.zhang@huawei.com> References: <20210527135641.420514-1-yi.zhang@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggeme752-chm.china.huawei.com (10.3.19.98) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org After remove the unique user of sop->bdev_try_to_free_page() callback, we could remove the callback and the corresponding blkdev_releasepage() at all. Signed-off-by: Zhang Yi --- fs/block_dev.c | 15 --------------- include/linux/fs.h | 1 - 2 files changed, 16 deletions(-) diff --git a/fs/block_dev.c b/fs/block_dev.c index 6cc4d4cfe0c2..e215da6d49b4 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1733,20 +1733,6 @@ ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to) } EXPORT_SYMBOL_GPL(blkdev_read_iter); -/* - * Try to release a page associated with block device when the system - * is under memory pressure. - */ -static int blkdev_releasepage(struct page *page, gfp_t wait) -{ - struct super_block *super = BDEV_I(page->mapping->host)->bdev.bd_super; - - if (super && super->s_op->bdev_try_to_free_page) - return super->s_op->bdev_try_to_free_page(super, page, wait); - - return try_to_free_buffers(page); -} - static int blkdev_writepages(struct address_space *mapping, struct writeback_control *wbc) { @@ -1760,7 +1746,6 @@ static const struct address_space_operations def_blk_aops = { .write_begin = blkdev_write_begin, .write_end = blkdev_write_end, .writepages = blkdev_writepages, - .releasepage = blkdev_releasepage, .direct_IO = blkdev_direct_IO, .migratepage = buffer_migrate_page_norefs, .is_dirty_writeback = buffer_check_dirty_writeback, diff --git a/include/linux/fs.h b/include/linux/fs.h index c3c88fdb9b2a..c3277b445f96 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2171,7 +2171,6 @@ struct super_operations { ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); struct dquot **(*get_dquots)(struct inode *); #endif - int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t); long (*nr_cached_objects)(struct super_block *, struct shrink_control *); long (*free_cached_objects)(struct super_block *, -- 2.25.4