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btrfs-progs: sync compression.h from kernel 

The header is not yet used, changes in prototypes and types. v6.4-rc1.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2023-05-12 00:07:16 +02:00
parent 0c94a7d005
commit b4916dfc14
1 changed files with 10 additions and 20 deletions
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30
kernel-shared/compression.h
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@ -10,7 +10,8 @@
struct btrfs_inode;
struct address_space;
struct cgroup_subsys_state;
struct inode;
struct bio;
/*
* We want to make sure that amount of RAM required to uncompress an extent is
@ -31,18 +32,12 @@ struct cgroup_subsys_state;
#define BTRFS_ZLIB_DEFAULT_LEVEL 3
struct compressed_bio {
/* Number of outstanding bios */
refcount_t pending_ios;
/* Number of compressed pages in the array */
unsigned int nr_pages;
/* the pages with the compressed data on them */
struct page **compressed_pages;
/* inode that owns this data */
struct inode *inode;
/* starting offset in the inode for our pages */
u64 start;
@ -58,12 +53,9 @@ struct compressed_bio {
/* Whether this is a write for writeback. */
bool writeback;
/* IO errors */
blk_status_t status;
union {
/* For reads, this is the bio we are copying the data into */
struct bio *orig_bio;
struct btrfs_bio *orig_bbio;
struct work_struct write_end_work;
};
};
@ -78,7 +70,7 @@ static inline unsigned int btrfs_compress_level(unsigned int type_level)
return ((type_level & 0xF0) >> 4);
}
int btrfs_init_compress(void);
int __init btrfs_init_compress(void);
void __cold btrfs_exit_compress(void);
int btrfs_compress_pages(unsigned int type_level, struct address_space *mapping,
@ -86,21 +78,19 @@ int btrfs_compress_pages(unsigned int type_level, struct address_space *mapping,
unsigned long *out_pages,
unsigned long *total_in,
unsigned long *total_out);
int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page,
int btrfs_decompress(int type, const u8 *data_in, struct page *dest_page,
unsigned long start_byte, size_t srclen, size_t destlen);
int btrfs_decompress_buf2page(const char *buf, u32 buf_len,
struct compressed_bio *cb, u32 decompressed);
blk_status_t btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start,
void btrfs_submit_compressed_write(struct btrfs_inode *inode, u64 start,
unsigned int len, u64 disk_start,
unsigned int compressed_len,
struct page **compressed_pages,
unsigned int nr_pages,
blk_opf_t write_flags,
struct cgroup_subsys_state *blkcg_css,
bool writeback);
void btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
int mirror_num);
void btrfs_submit_compressed_read(struct btrfs_bio *bbio, int mirror_num);
unsigned int btrfs_compress_str2level(unsigned int type, const char *str);
@ -150,7 +140,7 @@ 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,
int zlib_decompress(struct list_head *ws, const u8 *data_in,
struct page *dest_page, unsigned long start_byte, size_t srclen,
size_t destlen);
struct list_head *zlib_alloc_workspace(unsigned int level);
@ -161,7 +151,7 @@ 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,
int lzo_decompress(struct list_head *ws, const u8 *data_in,
struct page *dest_page, unsigned long start_byte, size_t srclen,
size_t destlen);
struct list_head *lzo_alloc_workspace(unsigned int level);
@ -171,7 +161,7 @@ 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,
int zstd_decompress(struct list_head *ws, const u8 *data_in,
struct page *dest_page, unsigned long start_byte, size_t srclen,
size_t destlen);
void zstd_init_workspace_manager(void);