[PATCH] pktcdvd: Allow larger packets

The pktcdvd driver uses a compile time macro constant to define the maximum
supported packet length.  I changed this from 32 sectors to 128 sectors
because that allows over 100 MB of additional usable space on a 700 MB cdrw,
and increases throughput.

Note that you need a modified cdrwtool program that can format a CDRW disc
with larger packets to benefit from this change.

Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
index 1623da8..8a94c71 100644 (file)
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -169,7 +169,7 @@ struct packet_iosched
 #if (PAGE_SIZE % CD_FRAMESIZE) != 0
 #error "PAGE_SIZE must be a multiple of CD_FRAMESIZE"
 #endif
-#define PACKET_MAX_SIZE                32
+#define PACKET_MAX_SIZE                128
 #define FRAMES_PER_PAGE                (PAGE_SIZE / CD_FRAMESIZE)
 #define PACKET_MAX_SECTORS     (PACKET_MAX_SIZE * CD_FRAMESIZE >> 9)