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f2fs: compress: disable compression mount option if compression is off 

If CONFIG_F2FS_FS_COMPRESSION is off, don't allow to configure or
show compression related mount option.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2020-07-29 21:21:36 +08:00 committed by Jaegeuk Kim
parent a86d27dd3d
commit 1f0b067b6e
1 changed files with 14 additions and 1 deletions
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15
fs/f2fs/super.c
View File

@ -460,9 +460,12 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
{
struct f2fs_sb_info *sbi = F2FS_SB(sb);
substring_t args[MAX_OPT_ARGS];
#ifdef CONFIG_F2FS_FS_COMPRESSION
unsigned char (*ext)[F2FS_EXTENSION_LEN];
int ext_cnt;
#endif
char *p, *name;
int arg = 0, ext_cnt;
int arg = 0;
kuid_t uid;
kgid_t gid;
int ret;
@ -853,6 +856,7 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
case Opt_checkpoint_enable:
clear_opt(sbi, DISABLE_CHECKPOINT);
break;
#ifdef CONFIG_F2FS_FS_COMPRESSION
case Opt_compress_algorithm:
if (!f2fs_sb_has_compression(sbi)) {
f2fs_err(sbi, "Compression feature if off");
@ -918,6 +922,13 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
F2FS_OPTION(sbi).compress_ext_cnt++;
kfree(name);
break;
#else
case Opt_compress_algorithm:
case Opt_compress_log_size:
case Opt_compress_extension:
f2fs_info(sbi, "compression options not supported");
break;
#endif
default:
f2fs_err(sbi, "Unrecognized mount option \"%s\" or missing value",
p);
@ -1608,7 +1619,9 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_NOBARRIER)
seq_printf(seq, ",fsync_mode=%s", "nobarrier");
#ifdef CONFIG_F2FS_FS_COMPRESSION
f2fs_show_compress_options(seq, sbi->sb);
#endif
return 0;
}