diff options
Diffstat (limited to 'fs/btrfs/compression.h')
| -rw-r--r-- | fs/btrfs/compression.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index da20755ebf21..677fa4aa0bd7 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -34,6 +34,8 @@ /* Maximum size of data before compression */ #define BTRFS_MAX_UNCOMPRESSED (SZ_128K) +#define BTRFS_ZLIB_DEFAULT_LEVEL 3 + struct compressed_bio { /* number of bios pending for this compressed extent */ refcount_t pending_bios; @@ -73,7 +75,7 @@ struct compressed_bio { u32 sums; }; -void btrfs_init_compress(void); +void __init btrfs_init_compress(void); void btrfs_exit_compress(void); int btrfs_compress_pages(unsigned int type_level, struct address_space *mapping, @@ -91,7 +93,8 @@ blk_status_t btrfs_submit_compressed_write(struct inode *inode, u64 start, unsigned long len, u64 disk_start, unsigned long compressed_len, struct page **compressed_pages, - unsigned long nr_pages); + unsigned long nr_pages, + unsigned int write_flags); blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags); @@ -134,6 +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 |