The patch titled
mmc: at91_mci: enable large data blocks
has been added to the -mm tree. Its filename is
mmc-at91_mci-enable-large-data-blocks.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mmc: at91_mci: enable large data blocks
From: Wolfgang Muees <wolfgang.mues@xxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
Cc: Andrew Victor <avictor.za@xxxxxxxxx>
Cc: <linux-mmc@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/at91_mci.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN drivers/mmc/host/at91_mci.c~mmc-at91_mci-enable-large-data-blocks drivers/mmc/host/at91_mci.c
--- a/drivers/mmc/host/at91_mci.c~mmc-at91_mci-enable-large-data-blocks
+++ a/drivers/mmc/host/at91_mci.c
@@ -934,6 +934,9 @@ static int __init at91_mci_probe(struct
mmc->max_blk_size = MCI_MAXBLKSIZE;
mmc->max_blk_count = MCI_BLKATONCE;
mmc->max_req_size = MCI_BUFSIZE;
+ mmc->max_phys_segs = MCI_BLKATONCE;
+ mmc->max_hw_segs = MCI_BLKATONCE;
+ mmc->max_seg_size = MCI_BUFSIZE;
host = mmc_priv(mmc);
host->mmc = mmc;
_
Patches currently in -mm which might be from wolfgang.mues@xxxxxxxxxxxx are
mmc-at91_mci-fix-pointer-errors.patch
mmc-at91_mci-fix-timeout-errors.patch
mmc-at91_mci-use-one-coherent-dma-buffer.patch
mmc-at91_mci-use-dma-buffer-for-read.patch
mmc-at91_mci-enable-large-data-blocks.patch
mmc-at91_mci-enable-mmc_cap_sdio_irq-only-when-it-actually-works.patch
mmc-at91_mci-introduce-per-mci-revision-conditional-code.patch
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