Commit 32be0e97 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

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: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 0b979f1b

fs/f2fs/super.c

+16 −0
Original line number Diff line number Diff line
@@ -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;