path: root/drivers/md/Kconfig
diff options
authorDan Williams <>2007-07-09 11:56:42 -0700
committerDan Williams <>2007-07-13 08:06:14 -0700
commit685784aaf3cd0e3ff5e36c7ecf6f441cdbf57f73 (patch)
tree10f99829f7d877b87614fe69be77e363c026a8d7 /drivers/md/Kconfig
parentd379b01e9087a582d58f4b678208a4f8d8376fe7 (diff)
xor: make 'xor_blocks' a library routine for use with async_tx
The async_tx api tries to use a dma engine for an operation, but will fall back to an optimized software routine otherwise. Xor support is implemented using the raid5 xor routines. For organizational purposes this routine is moved to a common area. The following fixes are also made: * rename xor_block => xor_blocks, suggested by Adrian Bunk * ensure that xor.o initializes before md.o in the built-in case * fixes * mark calibrate_xor_blocks __init, Adrian Bunk Cc: Adrian Bunk <> Cc: NeilBrown <> Cc: Herbert Xu <> Signed-off-by: Dan Williams <>
Diffstat (limited to 'drivers/md/Kconfig')
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig
index 7df934d69134..24d93d02a1f3 100644
--- a/drivers/md/Kconfig
+++ b/drivers/md/Kconfig
@@ -109,6 +109,7 @@ config MD_RAID10
config MD_RAID456
tristate "RAID-4/RAID-5/RAID-6 mode"
depends on BLK_DEV_MD
+ select XOR_BLOCKS
A RAID-5 set of N drives with a capacity of C MB per drive provides
the capacity of C * (N - 1) MB, and protects against a failure