pnfs: Automatically select blocks & objects layouts

Just like files-layout, blocks & objects layouts are part of the
NFS 4.1 protocol and should be automatically selected if NFS_4_1
is selected. The small problem is that these depend on other
Kernel support being present, while files only depends on NFS
itself.

This patch removes from the user choice the presence of objects
and blocks layout. But makes sure these are selected only if
the depended subsystems are present in the Kernel.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Acked-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index 0d30613..dbcd821 100644 (file)
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -89,24 +89,14 @@ config PNFS_FILE_LAYOUT
        tristate
 
 config PNFS_BLOCK
-       tristate "Provide support for the pNFS Block Layout Driver for NFSv4.1 pNFS (EXPERIMENTAL)"
+       tristate
        depends on NFS_FS && NFS_V4_1 && BLK_DEV_DM
-       help
-         Say M here if you want your pNFS client to support the Block Layout Driver
-         (RFC 5663). Requires Multiple devices driver support (DM) and Device mapper
-         support (BLK_DEV_DM).
-
-         If unsure, say N.
+       default m
 
 config PNFS_OBJLAYOUT
-       tristate "Provide support for the pNFS Objects Layout Driver for NFSv4.1 pNFS (EXPERIMENTAL)"
+       tristate
        depends on NFS_FS && NFS_V4_1 && SCSI_OSD_ULD
-       help
-         Say M here if you want your pNFS client to support the Objects Layout Driver.
-         Requires the SCSI osd initiator library (SCSI_OSD_INITIATOR) and
-         upper level driver (SCSI_OSD_ULD).
-
-         If unsure, say N.
+       default m
 
 config ROOT_NFS
        bool "Root file system on NFS"