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authorJarkko Lavinen <jarkko.lavinen@nokia.com>2011-02-14 16:16:11 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2011-03-11 14:22:46 +0000
commita321590246202f2598aca2f4ef63b992e8fc97ef (patch)
treecbb838704f7575bf5634c95fd1d91bef24e9d296 /drivers/mtd/Kconfig
parent115ee88c15b55859a8b59c5dccb3882bbd47e542 (diff)
downloadop-kernel-dev-a321590246202f2598aca2f4ef63b992e8fc97ef.zip
op-kernel-dev-a321590246202f2598aca2f4ef63b992e8fc97ef.tar.gz
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 <jarkko.lavinen@nokia.com> Tested-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/Kconfig')
-rw-r--r--drivers/mtd/Kconfig18
1 files changed, 18 insertions, 0 deletions
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"
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