bcache: A block layer cache
Does writethrough and writeback caching, handles unclean shutdown, and
has a bunch of other nifty features motivated by real world usage.
See the wiki at http://bcache.evilpiepirate.org for more.
Signed-off-by: Kent Overstreet <koverstreet@google.com>
diff --git a/drivers/md/bcache/Kconfig b/drivers/md/bcache/Kconfig
new file mode 100644
index 0000000..05c220d
--- /dev/null
+++ b/drivers/md/bcache/Kconfig
@@ -0,0 +1,42 @@
+
+config BCACHE
+ tristate "Block device as cache"
+ select CLOSURES
+ ---help---
+ Allows a block device to be used as cache for other devices; uses
+ a btree for indexing and the layout is optimized for SSDs.
+
+ See Documentation/bcache.txt for details.
+
+config BCACHE_DEBUG
+ bool "Bcache debugging"
+ depends on BCACHE
+ ---help---
+ Don't select this option unless you're a developer
+
+ Enables extra debugging tools (primarily a fuzz tester)
+
+config BCACHE_EDEBUG
+ bool "Extended runtime checks"
+ depends on BCACHE
+ ---help---
+ Don't select this option unless you're a developer
+
+ Enables extra runtime checks which significantly affect performance
+
+config BCACHE_CLOSURES_DEBUG
+ bool "Debug closures"
+ depends on BCACHE
+ select DEBUG_FS
+ ---help---
+ Keeps all active closures in a linked list and provides a debugfs
+ interface to list them, which makes it possible to see asynchronous
+ operations that get stuck.
+
+# cgroup code needs to be updated:
+#
+#config CGROUP_BCACHE
+# bool "Cgroup controls for bcache"
+# depends on BCACHE && BLK_CGROUP
+# ---help---
+# TODO