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NFS41: make PNFS_BLOCK selectable

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PNFS_BLOCK needs BLK_DEV_DM/MD, which is not a dependency for other
pnfs layout drivers. Seperate it out so others can still build when
BLK_DEV_DM/MD is not enabled.

Also change select to depends on to avoid build failures.

Reported-and-tested-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Peng Tao <peng_tao@emc.com>
Acked-by: Benny Halevy <bhalevy@tonian.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peng Tao 2011-08-10 18:29:21 -04:00 committed by Linus Torvalds
parent 068ef73912
commit 54a33b190a
1 changed files with 9 additions and 5 deletions
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14
fs/nfs/Kconfig
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@ -79,12 +79,9 @@ config NFS_V4_1
depends on NFS_FS && NFS_V4 && EXPERIMENTAL
select SUNRPC_BACKCHANNEL
select PNFS_FILE_LAYOUT
select PNFS_BLOCK
select MD
select BLK_DEV_DM
help
This option enables support for minor version 1 of the NFSv4 protocol
(RFC 5661 and RFC 5663) in the kernel's NFS client.
(RFC 5661) in the kernel's NFS client.
If unsure, say N.
@ -92,7 +89,14 @@ config PNFS_FILE_LAYOUT
tristate
config PNFS_BLOCK
tristate
tristate "Provide support for the pNFS Block Layout Driver for NFSv4.1 pNFS (EXPERIMENTAL)"
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.
config PNFS_OBJLAYOUT
tristate "Provide support for the pNFS Objects Layout Driver for NFSv4.1 pNFS (EXPERIMENTAL)"