linux-kernel - [PATCH] f2fs: do not allow to defragment files have FI_COMPRESS

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Date:   Tue, 25 Apr 2023 23:11:25 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <chao@...nel.org>,
        Daeho Jeong <daehojeong@...gle.com>
Cc:     Yangtao Li <frank.li@...o.com>, Qi Han <hanqi@...o.com>,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Subject: [PATCH] f2fs: do not allow to defragment files have FI_COMPRESS_RELEASED

If a file has FI_COMPRESS_RELEASED, all writes for it should not be
allowed.

Fixes: 5fdb322ff2c2 ("f2fs: add F2FS_IOC_DECOMPRESS_FILE and F2FS_IOC_COMPRESS_FILE")
Signed-off-by: Qi Han <hanqi@...o.com>
Signed-off-by: Yangtao Li <frank.li@...o.com>
---
 fs/f2fs/file.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9c9c3f660e01..c21d6a829c4a 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2734,6 +2734,9 @@ static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
 	if (f2fs_readonly(sbi->sb))
 		return -EROFS;
 
+	if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
+		return -EINVAL;
+
 	if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
 							sizeof(range)))
 		return -EFAULT;
-- 
2.39.0