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>
diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c
index 764d47b..b372822 100644
--- a/fs/btrfs/zstd.c
+++ b/fs/btrfs/zstd.c
@@ -367,13 +367,9 @@ static struct list_head *zstd_alloc_workspace(unsigned int level)
return ERR_PTR(-ENOMEM);
}
-static 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_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)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
ZSTD_CStream *stream;
@@ -548,7 +544,7 @@ static int zstd_compress_pages(struct list_head *ws,
return ret;
}
-static int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
+int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
struct page **pages_in = cb->compressed_pages;
@@ -626,10 +622,9 @@ static int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
return ret;
}
-static 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)
+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)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
ZSTD_DStream *stream;