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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 172B0C35642 for ; Fri, 21 Feb 2020 10:09:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA6BF20722 for ; Fri, 21 Feb 2020 10:09:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728536AbgBUKJi (ORCPT ); Fri, 21 Feb 2020 05:09:38 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:55790 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728438AbgBUKJg (ORCPT ); Fri, 21 Feb 2020 05:09:36 -0500 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 85D1C5816F81FCDBA610; Fri, 21 Feb 2020 18:09:34 +0800 (CST) Received: from szvp000203569.huawei.com (10.120.216.130) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.439.0; Fri, 21 Feb 2020 18:09:25 +0800 From: Chao Yu To: CC: , , , Chao Yu Subject: [RFC PATCH 1/2] f2fs: introduce F2FS_IOC_GET_COMPRESS_BLOCKS Date: Fri, 21 Feb 2020 18:09:21 +0800 Message-ID: <20200221100922.16781-1-yuchao0@huawei.com> X-Mailer: git-send-email 2.18.0.rc1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.120.216.130] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With this newly introduced interface, user can get block number compression saved in target inode. Signed-off-by: Chao Yu --- fs/f2fs/f2fs.h | 1 + fs/f2fs/file.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 5d047c0bbbbb..15199df5d40a 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -426,6 +426,7 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal, #define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32) #define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15) #define F2FS_IOC_RESIZE_FS _IOW(F2FS_IOCTL_MAGIC, 16, __u64) +#define F2FS_IOC_GET_COMPRESS_BLOCKS _IOR(F2FS_IOCTL_MAGIC, 17, __u64) #define F2FS_IOC_GET_VOLUME_NAME FS_IOC_GETFSLABEL #define F2FS_IOC_SET_VOLUME_NAME FS_IOC_SETFSLABEL diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index efca4ed17b7d..235708c892af 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3401,6 +3401,21 @@ static int f2fs_set_volume_name(struct file *filp, unsigned long arg) return err; } +static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg) +{ + struct inode *inode = file_inode(filp); + __u64 blocks; + + if (!f2fs_sb_has_compression(F2FS_I_SB(inode))) + return -EOPNOTSUPP; + + if (!f2fs_compressed_file(inode)) + return -EINVAL; + + blocks = F2FS_I(inode)->i_compr_blocks; + return put_user(blocks, (u64 __user *)arg); +} + long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp))))) @@ -3479,6 +3494,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return f2fs_get_volume_name(filp, arg); case F2FS_IOC_SET_VOLUME_NAME: return f2fs_set_volume_name(filp, arg); + case F2FS_IOC_GET_COMPRESS_BLOCKS: + return f2fs_get_compress_blocks(filp, arg); default: return -ENOTTY; } @@ -3636,6 +3653,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case FS_IOC_MEASURE_VERITY: case F2FS_IOC_GET_VOLUME_NAME: case F2FS_IOC_SET_VOLUME_NAME: + case F2FS_IOC_GET_COMPRESS_BLOCKS: break; default: return -ENOIOCTLCMD; -- 2.18.0.rc1