smb: client: compress: increase LZ77_MATCH_MAX_DIST

Increase max distance (i.e. window size) from 1k to 8k.
This allows better compression and is just as fast.

Other:
- drop LZ77_MATCH_MIN_DIST as it's nused -- main loop
  already checks if dist > 0

Signed-off-by: Enzo Matsumiya <[email protected]>
Signed-off-by: Steve French <[email protected]>

Author: ematsumiya

fs/smb/client/compress/lz77.c

@@ -17,8 +17,7 @@
  * Compression parameters.
  */
 #define LZ77_MATCH_MIN_LEN	4
-#define LZ77_MATCH_MIN_DIST	1
-#define LZ77_MATCH_MAX_DIST	SZ_1K
+#define LZ77_MATCH_MAX_DIST	SZ_8K
 #define LZ77_HASH_LOG		15
 #define LZ77_HASH_SIZE		(1 << LZ77_HASH_LOG)
 #define LZ77_STEP_SIZE		sizeof(u64)