btrfs: constify input buffer parameter in compression code
The input buffers passed down to compression must never be changed, switch type to u8 as it's a raw byte buffer and use const. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
parent
ad3daf1c3f
commit
3e09b5b229
5 changed files with 9 additions and 9 deletions
|
@ -119,7 +119,7 @@ static int compression_decompress_bio(struct list_head *ws,
|
|||
}
|
||||
|
||||
static int compression_decompress(int type, struct list_head *ws,
|
||||
unsigned char *data_in, struct page *dest_page,
|
||||
const u8 *data_in, struct page *dest_page,
|
||||
unsigned long start_byte, size_t srclen, size_t destlen)
|
||||
{
|
||||
switch (type) {
|
||||
|
@ -1232,7 +1232,7 @@ static int btrfs_decompress_bio(struct compressed_bio *cb)
|
|||
* single page, and we want to read a single page out of it.
|
||||
* start_byte tells us the offset into the compressed data we're interested in
|
||||
*/
|
||||
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)
|
||||
{
|
||||
struct list_head *workspace;
|
||||
|
|
|
@ -86,7 +86,7 @@ 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);
|
||||
|
@ -150,7 +150,7 @@ 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 +161,7 @@ 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 +171,7 @@ 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);
|
||||
|
|
|
@ -427,7 +427,7 @@ int lzo_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
|
|||
return ret;
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
|
|
|
@ -355,7 +355,7 @@ int zlib_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
|
|||
return ret;
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
|
|
|
@ -616,7 +616,7 @@ int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
|
|||
return ret;
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
|
|
Loading…
Reference in a new issue