If a file is not comprssed yet or does not have compressed data,
for example, its data has a very low compression ratio, do not
set FI_COMPRESS_RELEASED flag.

Signed-off-by: Sheng Yong <shengyong@oppo.com>
---
 fs/f2fs/file.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index b1a4de3b53e01..0f54c1ff02f71 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3510,13 +3510,15 @@ static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
 	if (ret)
 		goto out;
 
+	if (!atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
+		ret = -EPERM;
+		goto out;
+	}
+
 	set_inode_flag(inode, FI_COMPRESS_RELEASED);
 	inode->i_ctime = current_time(inode);
 	f2fs_mark_inode_dirty_sync(inode, true);
 
-	if (!atomic_read(&F2FS_I(inode)->i_compr_blocks))
-		goto out;
-
 	f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
 	filemap_invalidate_lock(inode->i_mapping);
 
-- 
2.40.1

On 2023/6/27 20:21, Sheng Yong wrote:
> If a file is not comprssed yet or does not have compressed data,
> for example, its data has a very low compression ratio, do not
> set FI_COMPRESS_RELEASED flag.
> 
> Signed-off-by: Sheng Yong <shengyong@oppo.com>

Reviewed-by: Chao Yu <chao@kernel.org>

Thanks,

Hello:

This patch was applied to jaegeuk/f2fs.git (dev)
by Jaegeuk Kim <jaegeuk@kernel.org>:

On Tue, 27 Jun 2023 20:21:53 +0800 you wrote:
> If a file is not comprssed yet or does not have compressed data,
> for example, its data has a very low compression ratio, do not
> set FI_COMPRESS_RELEASED flag.
> 
> Signed-off-by: Sheng Yong <shengyong@oppo.com>
> ---
>  fs/f2fs/file.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

Here is the summary with links:
  - [f2fs-dev,RFC] f2fs: only set release for file that has compressed data
    https://git.kernel.org/jaegeuk/f2fs/c/87a91a155902

You are awesome, thank you!
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