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f2fs: compress: deny setting unsupported compress algorithm

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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>
This commit is contained in:
Chao Yu 2021-01-22 17:40:13 +08:00 • committed by Jaegeuk Kim
parent 0b979f1bde
commit 32be0e97c7
1 changed files with 16 additions and 0 deletions
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16
fs/f2fs/super.c
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@ -882,17 +882,33 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
if (!name) if (!name)
return -ENOMEM; return -ENOMEM;
if (!strcmp(name, "lzo")) { if (!strcmp(name, "lzo")) {
#ifdef CONFIG_F2FS_FS_LZO
F2FS_OPTION(sbi).compress_algorithm = F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZO; COMPRESS_LZO;
#else
f2fs_info(sbi, "kernel doesn't support lzo compression");
#endif
} else if (!strcmp(name, "lz4")) { } else if (!strcmp(name, "lz4")) {
#ifdef CONFIG_F2FS_FS_LZ4
F2FS_OPTION(sbi).compress_algorithm = F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZ4; COMPRESS_LZ4;
#else
f2fs_info(sbi, "kernel doesn't support lz4 compression");
#endif
} else if (!strcmp(name, "zstd")) { } else if (!strcmp(name, "zstd")) {
#ifdef CONFIG_F2FS_FS_ZSTD
F2FS_OPTION(sbi).compress_algorithm = F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_ZSTD; COMPRESS_ZSTD;
#else
f2fs_info(sbi, "kernel doesn't support zstd compression");
#endif
} else if (!strcmp(name, "lzo-rle")) { } else if (!strcmp(name, "lzo-rle")) {
#ifdef CONFIG_F2FS_FS_LZORLE
F2FS_OPTION(sbi).compress_algorithm = F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZORLE; COMPRESS_LZORLE;
#else
f2fs_info(sbi, "kernel doesn't support lzorle compression");
#endif
} else { } else {
kfree(name); kfree(name);
return -EINVAL; return -EINVAL;