diff options
| author | David Sterba <dsterba@suse.com> | 2019-10-04 02:21:48 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-11-18 12:46:58 +0100 |
| commit | d20f395f98959dee592cf05af0bec7ab5b185e5e (patch) | |
| tree | e8b3580f2f3c0fdee2b34fc7f85f83611c2d8dd7 /fs/btrfs/compression.c | |
| parent | 2510307e6c78d1d9a59c85164cbff66f8a9f3fed (diff) | |
btrfs: compression: export alloc/free/get/put callbacks of all algos
The indirect calls will be replaced by a switch in compression.c.
(Switch is faster than indirect calls with when Spectre mitigations are
enabled).
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 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 34921a120829..f707db4a9a53 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -36,6 +36,10 @@ 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); +struct list_head *zlib_alloc_workspace(unsigned int level); +void zlib_free_workspace(struct list_head *ws); +struct list_head *zlib_get_workspace(unsigned int level); +void zlib_put_workspace(struct list_head *ws); int lzo_compress_pages(struct list_head *ws, struct address_space *mapping, u64 start, struct page **pages, unsigned long *out_pages, @@ -44,6 +48,10 @@ 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); +struct list_head *lzo_alloc_workspace(unsigned int level); +void lzo_free_workspace(struct list_head *ws); +struct list_head *lzo_get_workspace(unsigned int level); +void lzo_put_workspace(struct list_head *ws); int zstd_compress_pages(struct list_head *ws, struct address_space *mapping, u64 start, struct page **pages, unsigned long *out_pages, @@ -54,6 +62,10 @@ int zstd_decompress(struct list_head *ws, unsigned char *data_in, size_t destlen); void zstd_init_workspace_manager(void); void zstd_cleanup_workspace_manager(void); +struct list_head *zstd_alloc_workspace(unsigned int level); +void zstd_free_workspace(struct list_head *ws); +struct list_head *zstd_get_workspace(unsigned int level); +void zstd_put_workspace(struct list_head *ws); static const char* const btrfs_compress_types[] = { "", "zlib", "lzo", "zstd" }; |