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-rw-r--r--fs/btrfs/lzo.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index 45d26980caf9..f48c8c14dc14 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -76,7 +76,7 @@ static inline void write_compress_length(char *buf, size_t len)
memcpy(buf, &dlen, LZO_LEN);
}
-static inline size_t read_compress_length(char *buf)
+static inline size_t read_compress_length(const char *buf)
{
__le32 dlen;
@@ -86,13 +86,11 @@ static inline size_t read_compress_length(char *buf)
static int lzo_compress_pages(struct list_head *ws,
struct address_space *mapping,
- u64 start, unsigned long len,
+ u64 start,
struct page **pages,
- unsigned long nr_dest_pages,
unsigned long *out_pages,
unsigned long *total_in,
- unsigned long *total_out,
- unsigned long max_out)
+ unsigned long *total_out)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
int ret = 0;
@@ -102,7 +100,9 @@ static int lzo_compress_pages(struct list_head *ws,
struct page *in_page = NULL;
struct page *out_page = NULL;
unsigned long bytes_left;
-
+ unsigned long len = *total_out;
+ unsigned long nr_dest_pages = *out_pages;
+ const unsigned long max_out = nr_dest_pages * PAGE_SIZE;
size_t in_len;
size_t out_len;
char *buf;