f2fs: set the default compress_level on ioctl

commit f5f3bd903a5d3e3b2ba89f11e0e29db25e60c048 upstream.

Otherwise, we'll get a broken inode.

 # touch $FILE
 # f2fs_io setflags compression $FILE
 # f2fs_io set_coption 2 8 $FILE

[  112.227612] F2FS-fs (dm-51): sanity_check_compress_inode: inode (ino=8d3fe) has unsupported compress level: 0, run fsck to fix

Cc: stable@vger.kernel.org
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index d034703..a06f03d 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4006,6 +4006,15 @@ static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
        F2FS_I(inode)->i_compress_algorithm = option.algorithm;
        F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
        F2FS_I(inode)->i_cluster_size = BIT(option.log_cluster_size);
+       /* Set default level */
+       if (F2FS_I(inode)->i_compress_algorithm == COMPRESS_ZSTD)
+               F2FS_I(inode)->i_compress_level = F2FS_ZSTD_DEFAULT_CLEVEL;
+       else
+               F2FS_I(inode)->i_compress_level = 0;
+       /* Adjust mount option level */
+       if (option.algorithm == F2FS_OPTION(sbi).compress_algorithm &&
+           F2FS_OPTION(sbi).compress_level)
+               F2FS_I(inode)->i_compress_level = F2FS_OPTION(sbi).compress_level;
        f2fs_mark_inode_dirty_sync(inode, true);
 
        if (!f2fs_is_compress_backend_ready(inode))