btrfs: compression: add helper for type to string conversion (e128f9c3) · Commits · 戴 / test

fs/btrfs/compression.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,21 @@
		#include "extent_io.h"
		#include "extent_map.h"

		static const char* const btrfs_compress_types[] = { "", "zlib", "lzo", "zstd" };

		const char* btrfs_compress_type2str(enum btrfs_compression_type type)
		{
		switch (type) {
		case BTRFS_COMPRESS_ZLIB:
		case BTRFS_COMPRESS_LZO:
		case BTRFS_COMPRESS_ZSTD:
		case BTRFS_COMPRESS_NONE:
		return btrfs_compress_types[type];
		}

		return NULL;
		}

		static int btrfs_decompress_bio(struct compressed_bio *cb);

		static inline int compressed_bio_size(struct btrfs_fs_info *fs_info,

+2 −0

Original line number	Diff line number	Diff line
		@@ -137,6 +137,8 @@ extern const struct btrfs_compress_op btrfs_zlib_compress;
		extern const struct btrfs_compress_op btrfs_lzo_compress;
		extern const struct btrfs_compress_op btrfs_zstd_compress;

		const char* btrfs_compress_type2str(enum btrfs_compression_type type);

		int btrfs_compress_heuristic(struct inode *inode, u64 start, u64 end);

		#endif