mmc: at91_mci: enable large data blocks
authorWolfgang Muees <wolfgang.mues@auerswald.de>
Fri, 5 Mar 2010 21:43:42 +0000 (13:43 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 6 Mar 2010 19:26:43 +0000 (11:26 -0800)
commit9af13be2acac60ca5593e41a601d4a5b6bc35302
tree5f73ff3f0a4dfbed2dc87e171d78df612f2b227d
parent86ee26f5b0a889bf7e9f6351bbf01516d0686461
mmc: at91_mci: enable large data blocks

This patch is setting some max_ variables for the IO elevator, so the
elevator will put requests for large data blocks to the driver.  This is
critical for

a) speed

and

b) wear leveling of the flash chip controller: Otherwise the controller
   will treat the SD card badly with millions of single 4 KByte write
   commands.  This will lead to a shorter life time for the SD cards.

Signed-off-by: Wolfgang Muees <wolfgang.mues@auerswald.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Andrew Victor <avictor.za@gmail.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/mmc/host/at91_mci.c