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Tue, 03 Sep 2019 02:06:44 +0000 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 2BC6DC61656970BAF950; Tue, 3 Sep 2019 10:06:35 +0800 (CST) Received: from szvp000203569.huawei.com (10.120.216.130) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.439.0; Tue, 3 Sep 2019 10:06:30 +0800 From: Chao Yu To: Date: Tue, 3 Sep 2019 10:06:26 +0800 Message-ID: <20190903020626.93020-2-yuchao0@huawei.com> X-Mailer: git-send-email 2.18.0.rc1 In-Reply-To: <20190903020626.93020-1-yuchao0@huawei.com> References: <20190903020626.93020-1-yuchao0@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.120.216.130] X-CFilter-Loop: Reflected X-Headers-End: 1i4yDS-007qdz-OW Subject: [f2fs-dev] [PATCH v2 2/2] f2fs: convert inline_data in prior to i_size_write X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Jaegeuk Kim In below call path, we change i_size before inline conversion, however, if we failed to convert inline inode, the inode may have wrong i_size which is larger than max inline size, result inline inode corruption. - f2fs_setattr - truncate_setsize - f2fs_convert_inline_inode This patch reorders truncate_setsize() and f2fs_convert_inline_inode() to guarantee inline_data has valid i_size. Fixes: 0cab80ee0c9e ("f2fs: fix to convert inline inode in ->setattr") Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/file.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 6528216ab832..10927a0b8df3 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -814,14 +814,24 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) } if (attr->ia_valid & ATTR_SIZE) { - bool to_smaller = (attr->ia_size <= i_size_read(inode)); + loff_t old_size = i_size_read(inode); + + if (attr->ia_size > MAX_INLINE_DATA(inode)) { + /* + * should convert inline inode before i_size_write to + * keep smaller than inline_data size with inline flag. + */ + err = f2fs_convert_inline_inode(inode); + if (err) + return err; + } down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); down_write(&F2FS_I(inode)->i_mmap_sem); truncate_setsize(inode, attr->ia_size); - if (to_smaller) + if (attr->ia_size <= old_size) err = f2fs_truncate(inode); /* * do not trim all blocks after i_size if target size is @@ -829,21 +839,11 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) */ up_write(&F2FS_I(inode)->i_mmap_sem); up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); - if (err) return err; - if (!to_smaller) { - /* should convert inline inode here */ - if (!f2fs_may_inline_data(inode)) { - err = f2fs_convert_inline_inode(inode); - if (err) - return err; - } - inode->i_mtime = inode->i_ctime = current_time(inode); - } - down_write(&F2FS_I(inode)->i_sem); + inode->i_mtime = inode->i_ctime = current_time(inode); F2FS_I(inode)->last_disk_size = i_size_read(inode); up_write(&F2FS_I(inode)->i_sem); } -- 2.18.0.rc1 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel