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| author |   David Sterba <dsterba@suse.com> | 2019-10-01 22:38:34 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-11-18 12:46:56 +0100 |
| commit | c4bf665a3197554a696121d20f3bf11d084a6961 (patch) | |
| tree | f2f22990a01d918ee4b4a2ecf9f47c52a80389f3 /fs/btrfs/compression.c | |
| parent | btrfs: use btrfs_block_group_cache_done in update_block_group (diff) | |
| download | linux-dev-c4bf665a3197554a696121d20f3bf11d084a6961.tar.xz linux-dev-c4bf665a3197554a696121d20f3bf11d084a6961.zip | |
btrfs: export compression and decompression callbacks
Export compress_pages, decompress_bio and decompress callbacks for all
compression algos. The indirect calls will be replaced by a switch.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/compression.c')
| -rw-r--r-- | fs/btrfs/compression.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 93deaf0cc2b8..8611a8b3321a 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -29,6 +29,30 @@ #include "extent_io.h" #include "extent_map.h" +int zlib_compress_pages(struct list_head *ws, struct address_space *mapping, + u64 start, struct page **pages, unsigned long *out_pages, + unsigned long *total_in, unsigned long *total_out); +int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb); +int zlib_decompress(struct list_head *ws, unsigned char *data_in, + struct page *dest_page, unsigned long start_byte, size_t srclen, + size_t destlen); + +int lzo_compress_pages(struct list_head *ws, struct address_space *mapping, + u64 start, struct page **pages, unsigned long *out_pages, + unsigned long *total_in, unsigned long *total_out); +int lzo_decompress_bio(struct list_head *ws, struct compressed_bio *cb); +int lzo_decompress(struct list_head *ws, unsigned char *data_in, + struct page *dest_page, unsigned long start_byte, size_t srclen, + size_t destlen); + +int zstd_compress_pages(struct list_head *ws, struct address_space *mapping, + u64 start, struct page **pages, unsigned long *out_pages, + unsigned long *total_in, unsigned long *total_out); +int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb); +int zstd_decompress(struct list_head *ws, unsigned char *data_in, + struct page *dest_page, unsigned long start_byte, size_t srclen, + size_t destlen); + static const char* const btrfs_compress_types[] = { "", "zlib", "lzo", "zstd" }; const char* btrfs_compress_type2str(enum btrfs_compression_type type) |