From: Chao Yu <chao@kernel.org>
To: jaegeuk@kernel.org
Cc: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH 2/2] f2fs: compress: disable compression mount option if compression is off
Date: Wed, 29 Jul 2020 21:21:36 +0800 [thread overview]
Message-ID: <20200729132136.11134-2-chao@kernel.org> (raw)
In-Reply-To: <20200729132136.11134-1-chao@kernel.org>
From: Chao Yu <yuchao0@huawei.com>
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>
---
fs/f2fs/super.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 5e0a3eeb8ca4..cdca2087dba0 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -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;
}
--
2.22.0
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prev parent reply other threads:[~2020-07-29 13:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 13:21 [f2fs-dev] [PATCH 1/2] f2fs: compress: add sanity check during compressed cluster read Chao Yu
2020-07-29 13:21 ` Chao Yu [this message]
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