From a321590246202f2598aca2f4ef63b992e8fc97ef Mon Sep 17 00:00:00 2001 From: Jarkko Lavinen Date: Mon, 14 Feb 2011 16:16:11 +0200 Subject: mtd: Add mtdswap block driver Add a driver for allowing an mtd device to be used as a block device for swapping. The block device is volatile, and the mapping of swapped pages is not stored on flash. Signed-off-by: Jarkko Lavinen Tested-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/Kconfig | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers/mtd/Kconfig') diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 23088b3..5fe01d5 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -325,6 +325,24 @@ config MTD_OOPS To use, add console=ttyMTDx to the kernel command line, where x is the MTD device number to use. +config MTD_SWAP + tristate "Swap on MTD device support" + depends on MTD && SWAP + select MTD_BLKDEVS + help + Provides volatile block device driver on top of mtd partition + suitable for swapping. The mapping of written blocks is not saved. + The driver provides wear leveling by storing erase counter into the + OOB. + +config MTD_SWAP_STRICT + bool "Strict erase error handling" + depends on MTD_SWAP + help + Enables strict tolerance on failed erasures, marking erase blocks bad + right after the first failed operation. With non-strict mode the + erase operation is retried. + source "drivers/mtd/chips/Kconfig" source "drivers/mtd/maps/Kconfig" -- cgit v1.1