diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-03-04 20:46:16 +0100 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2016-03-18 11:40:57 -0400 |
| commit | 81c39329010d6131c0909ccb91ffeaffc2e99010 (patch) | |
| tree | 258dd96de67730499a91cfceb8c5764dcb504c6b /fs/nfsd | |
| parent | d9186c03976506cde2c2b1219028bed449c948ed (diff) | |
| download | linux-81c39329010d6131c0909ccb91ffeaffc2e99010.tar.bz2 | |
nfsd: add a new config option for the block layout driver
Split the config symbols into a generic pNFS one, which is invisible
and gets selected by the layout drivers, and one for the block layout
driver.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/Kconfig | 13 | ||||
| -rw-r--r-- | fs/nfsd/Makefile | 3 | ||||
| -rw-r--r-- | fs/nfsd/nfs4layouts.c | 4 | ||||
| -rw-r--r-- | fs/nfsd/pnfs.h | 2 |
4 files changed, 17 insertions, 5 deletions
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig index a0b77fc1bd39..eb70d91b255b 100644 --- a/fs/nfsd/Kconfig +++ b/fs/nfsd/Kconfig @@ -84,12 +84,17 @@ config NFSD_V4 If unsure, say N. config NFSD_PNFS - bool "NFSv4.1 server support for Parallel NFS (pNFS)" + bool + +config NFSD_BLOCKLAYOUT + bool "NFSv4.1 server support for pNFS block layouts" depends on NFSD_V4 + select NFSD_PNFS help - This option enables support for the parallel NFS features of the - minor version 1 of the NFSv4 protocol (RFC5661) in the kernel's NFS - server. + This option enables support for the exporting pNFS block layouts + in the kernel's NFS server. The pNFS block layout enables NFS + clients to directly perform I/O to block devices accesible to both + the server and the clients. See RFC 5663 for more details. If unsure, say N. diff --git a/fs/nfsd/Makefile b/fs/nfsd/Makefile index 9a6028e120c6..679cdc6efee8 100644 --- a/fs/nfsd/Makefile +++ b/fs/nfsd/Makefile @@ -17,4 +17,5 @@ nfsd-$(CONFIG_NFSD_V3) += nfs3proc.o nfs3xdr.o nfsd-$(CONFIG_NFSD_V3_ACL) += nfs3acl.o nfsd-$(CONFIG_NFSD_V4) += nfs4proc.o nfs4xdr.o nfs4state.o nfs4idmap.o \ nfs4acl.o nfs4callback.o nfs4recover.o -nfsd-$(CONFIG_NFSD_PNFS) += nfs4layouts.o blocklayout.o blocklayoutxdr.o +nfsd-$(CONFIG_NFSD_PNFS) += nfs4layouts.o +nfsd-$(CONFIG_NFSD_BLOCKLAYOUT) += blocklayout.o blocklayoutxdr.o diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c index ce2d010d3b17..4e4def77ebc7 100644 --- a/fs/nfsd/nfs4layouts.c +++ b/fs/nfsd/nfs4layouts.c @@ -26,7 +26,9 @@ static const struct nfsd4_callback_ops nfsd4_cb_layout_ops; static const struct lock_manager_operations nfsd4_layouts_lm_ops; const struct nfsd4_layout_ops *nfsd4_layout_ops[LAYOUT_TYPE_MAX] = { +#ifdef CONFIG_NFSD_BLOCKLAYOUT [LAYOUT_BLOCK_VOLUME] = &bl_layout_ops, +#endif }; /* pNFS device ID to export fsid mapping */ @@ -121,10 +123,12 @@ void nfsd4_setup_layout_type(struct svc_export *exp) if (!(exp->ex_flags & NFSEXP_PNFS)) return; +#ifdef CONFIG_NFSD_BLOCKLAYOUT if (sb->s_export_op->get_uuid && sb->s_export_op->map_blocks && sb->s_export_op->commit_blocks) exp->ex_layout_type = LAYOUT_BLOCK_VOLUME; +#endif } static void diff --git a/fs/nfsd/pnfs.h b/fs/nfsd/pnfs.h index d4c4453674c6..ff50bfa1f76f 100644 --- a/fs/nfsd/pnfs.h +++ b/fs/nfsd/pnfs.h @@ -35,7 +35,9 @@ struct nfsd4_layout_ops { }; extern const struct nfsd4_layout_ops *nfsd4_layout_ops[]; +#ifdef CONFIG_NFSD_BLOCKLAYOUT extern const struct nfsd4_layout_ops bl_layout_ops; +#endif __be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, stateid_t *stateid, |