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 <yuch...@huawei.com>
---
fs/f2fs/super.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 8637196dec7c..d128b5cb763d 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -936,9 +936,14 @@ 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 (!strncmp(name, "lz4", 3)) {
+#ifdef CONFIG_F2FS_FS_LZ4
ret = f2fs_compress_set_level(sbi, name,
COMPRESS_LZ4);
if (ret) {
@@ -947,7 +952,11 @@ static int parse_options(struct super_block *sb, char
*options, bool is_remount)
}
F2FS_OPTION(sbi).compress_algorithm =
COMPRESS_LZ4;
+#else
+ f2fs_info(sbi, "kernel doesn't support lz4
compression");
+#endif
} else if (!strncmp(name, "zstd", 4)) {
+#ifdef CONFIG_F2FS_FS_ZSTD
ret = f2fs_compress_set_level(sbi, name,
COMPRESS_ZSTD);
if (ret) {
@@ -956,9 +965,16 @@ static int parse_options(struct super_block *sb, char
*options, bool is_remount)
}
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;
--
2.29.2
