Merge branch 'parisc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...

[karo-tx-linux.git] / drivers / md / Kconfig

diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 95ad936e60482477c1f87c0aa654fded90d06ba5..5bdedf6df153cf25d54e91a2cca5d9e3b6b8b1cf 100644 (file)
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -285,6 +285,17 @@ config DM_CACHE_CLEANER
          A simple cache policy that writes back all data to the
          origin.  Used when decommissioning a dm-cache.
 
+config DM_ERA
+       tristate "Era target (EXPERIMENTAL)"
+       depends on BLK_DEV_DM
+       default n
+       select DM_PERSISTENT_DATA
+       select DM_BIO_PRISON
+       ---help---
+         dm-era tracks which parts of a block device are written to
+         over time.  Useful for maintaining cache coherency when using
+         vendor snapshots.
+
 config DM_MIRROR
        tristate "Mirror target"
        depends on BLK_DEV_DM