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 <[email protected]>
---
v3:
- rebase to commit 03a9a1a64a11 ("f2fs: relocate f2fs_precache_extents()")
in dev branch
fs/f2fs/super.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
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;
--
2.29.2