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Diffstat (limited to 'fs/btrfs/compression.h')
-rw-r--r--fs/btrfs/compression.h46
1 files changed, 7 insertions, 39 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index 4cb8be9ff88b..d253f7aa8ed5 100644
--- a/fs/btrfs/compression.h
+++ b/fs/btrfs/compression.h
@@ -93,7 +93,8 @@ blk_status_t btrfs_submit_compressed_write(struct inode *inode, u64 start,
unsigned long compressed_len,
struct page **compressed_pages,
unsigned long nr_pages,
- unsigned int write_flags);
+ unsigned int write_flags,
+ struct cgroup_subsys_state *blkcg_css);
blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags);
@@ -104,11 +105,10 @@ enum btrfs_compression_type {
BTRFS_COMPRESS_ZLIB = 1,
BTRFS_COMPRESS_LZO = 2,
BTRFS_COMPRESS_ZSTD = 3,
- BTRFS_COMPRESS_TYPES = 3,
+ BTRFS_NR_COMPRESS_TYPES = 4,
};
struct workspace_manager {
- const struct btrfs_compress_op *ops;
struct list_head idle_ws;
spinlock_t ws_lock;
/* Number of free workspaces */
@@ -119,50 +119,18 @@ struct workspace_manager {
wait_queue_head_t ws_wait;
};
-void btrfs_init_workspace_manager(struct workspace_manager *wsm,
- const struct btrfs_compress_op *ops);
-struct list_head *btrfs_get_workspace(struct workspace_manager *wsm,
- unsigned int level);
-void btrfs_put_workspace(struct workspace_manager *wsm, struct list_head *ws);
-void btrfs_cleanup_workspace_manager(struct workspace_manager *wsm);
+struct list_head *btrfs_get_workspace(int type, unsigned int level);
+void btrfs_put_workspace(int type, struct list_head *ws);
struct btrfs_compress_op {
- void (*init_workspace_manager)(void);
-
- void (*cleanup_workspace_manager)(void);
-
- struct list_head *(*get_workspace)(unsigned int level);
-
- void (*put_workspace)(struct list_head *ws);
-
- struct list_head *(*alloc_workspace)(unsigned int level);
-
- void (*free_workspace)(struct list_head *workspace);
-
- int (*compress_pages)(struct list_head *workspace,
- struct address_space *mapping,
- u64 start,
- struct page **pages,
- unsigned long *out_pages,
- unsigned long *total_in,
- unsigned long *total_out);
-
- int (*decompress_bio)(struct list_head *workspace,
- struct compressed_bio *cb);
-
- int (*decompress)(struct list_head *workspace,
- unsigned char *data_in,
- struct page *dest_page,
- unsigned long start_byte,
- size_t srclen, size_t destlen);
-
+ struct workspace_manager *workspace_manager;
/* Maximum level supported by the compression algorithm */
unsigned int max_level;
unsigned int default_level;
};
/* The heuristic workspaces are managed via the 0th workspace manager */
-#define BTRFS_NR_WORKSPACE_MANAGERS (BTRFS_COMPRESS_TYPES + 1)
+#define BTRFS_NR_WORKSPACE_MANAGERS BTRFS_NR_COMPRESS_TYPES
extern const struct btrfs_compress_op btrfs_heuristic_compress;
extern const struct btrfs_compress_op btrfs_zlib_compress;