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authorChao Yu <yuchao0@huawei.com>2021-01-22 12:40:13 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2021-01-28 02:20:02 +0300
commit32be0e97c71366a19d11d1965e3f0957ea0be609 (patch)
tree4ecb15d835514794c7a08ee8bd8ff58867c898f4 /fs/f2fs
parent0b979f1bded3e6808184842133e6afeba312a4ff (diff)
downloadlinux-32be0e97c71366a19d11d1965e3f0957ea0be609.tar.xz
f2fs: compress: deny setting unsupported compress algorithm
If kernel doesn't support certain kinds of compress algorithm, deny to set them as compress algorithm of f2fs via 'compress_algorithm=%s' mount option. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/super.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index b4a07fe62d1a..a275bd312ae5 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -882,17 +882,33 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
if (!name)
return -ENOMEM;
if (!strcmp(name, "lzo")) {
+#ifdef CONFIG_F2FS_FS_LZO
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZO;
+#else
+ f2fs_info(sbi, "kernel doesn't support lzo compression");
+#endif
} else if (!strcmp(name, "lz4")) {
+#ifdef CONFIG_F2FS_FS_LZ4
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZ4;
+#else
+ f2fs_info(sbi, "kernel doesn't support lz4 compression");
+#endif
} else if (!strcmp(name, "zstd")) {
+#ifdef CONFIG_F2FS_FS_ZSTD
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_ZSTD;
+#else
+ f2fs_info(sbi, "kernel doesn't support zstd compression");
+#endif
} else if (!strcmp(name, "lzo-rle")) {
+#ifdef CONFIG_F2FS_FS_LZORLE
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZORLE;
+#else
+ f2fs_info(sbi, "kernel doesn't support lzorle compression");
+#endif
} else {
kfree(name);
return -EINVAL;