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Commit be5d8218 authored by Jens Axboe's avatar Jens Axboe Committed by Jeff Garzik
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use_clustering (sht) bit set to 0 in AHCI ? 



ahci: enable sg segment clustering

The specification states that ahci supports segments up to 4MiB in size,
so enable clustering.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent a16abc0b

drivers/ata/ahci.c

+1 −1
Original line number Diff line number Diff line
@@ -54,7 +54,7 @@ enum { 
	AHCI_MAX_PORTS		= 32,

	AHCI_MAX_SG		= 168, /* hardware max is 64K */

	AHCI_DMA_BOUNDARY	= 0xffffffff,

	AHCI_USE_CLUSTERING	= 0,

	AHCI_USE_CLUSTERING	= 1,

	AHCI_MAX_CMDS		= 32,

	AHCI_CMD_SZ		= 32,

	AHCI_CMD_SLOT_SZ	= AHCI_MAX_CMDS * AHCI_CMD_SZ,