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Diffstat (limited to 'fs/btrfs/compression.h')
-rw-r--r--fs/btrfs/compression.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index 03bb9d143f..afd7e50d07 100644
--- a/fs/btrfs/compression.h
+++ b/fs/btrfs/compression.h
@@ -32,6 +32,8 @@ static_assert((BTRFS_MAX_COMPRESSED % PAGE_SIZE) == 0);
#define BTRFS_ZLIB_DEFAULT_LEVEL 3
+struct page;
+
struct compressed_bio {
/* Number of compressed pages in the array */
unsigned int nr_pages;
@@ -96,6 +98,9 @@ void btrfs_submit_compressed_read(struct btrfs_bio *bbio);
unsigned int btrfs_compress_str2level(unsigned int type, const char *str);
+struct page *btrfs_alloc_compr_page(void);
+void btrfs_free_compr_page(struct page *page);
+
enum btrfs_compression_type {
BTRFS_COMPRESS_NONE = 0,
BTRFS_COMPRESS_ZLIB = 1,
@@ -143,7 +148,7 @@ int zlib_compress_pages(struct list_head *ws, struct address_space *mapping,
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, const u8 *data_in,
- struct page *dest_page, unsigned long start_byte, size_t srclen,
+ struct page *dest_page, unsigned long dest_pgoff, size_t srclen,
size_t destlen);
struct list_head *zlib_alloc_workspace(unsigned int level);
void zlib_free_workspace(struct list_head *ws);
@@ -154,7 +159,7 @@ int lzo_compress_pages(struct list_head *ws, struct address_space *mapping,
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, const u8 *data_in,
- struct page *dest_page, unsigned long start_byte, size_t srclen,
+ struct page *dest_page, unsigned long dest_pgoff, size_t srclen,
size_t destlen);
struct list_head *lzo_alloc_workspace(unsigned int level);
void lzo_free_workspace(struct list_head *ws);