Merged for pnfs-all-2.6.35-2010-08-05. Thanks!
Benny
On Jul. 27, 2010, 4:10 +0300, Ricardo Labiaga <Ricardo.Labiaga@xxxxxxxxxx> wrote:
> Future NFSv4.x work will add several new layout types. Use
> nfs-layouttype4-<number> in request_module() to allow current and future
> layout types to be loaded without requiring changes to the module loading
> code.
>
> The kernel issues request_module(nfs4-layouttype4-<number>) which is
> then mapped to the actual module name in the modprobe aliases file.
> Something like:
> alias nfs-layouttype4-1 nfs_layout_nfsv41_files
> alias nfs-layouttype4-2 nfs_layout_osd2_objects
>
> It can be turned off by commenting out the alias, or specifying it off.
> For example:
> alias nfs-layouttype4-3 off
>
> The module can still be loaded by hand using modprobe.
>
> Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@xxxxxxxxxx>
> ---
> fs/nfs/Makefile | 4 ++--
> fs/nfs/pnfs.c | 10 +---------
> fs/nfs/pnfs.h | 2 +-
> 3 files changed, 4 insertions(+), 12 deletions(-)
>
> diff --git a/fs/nfs/Makefile b/fs/nfs/Makefile
> index 6c218e7..4776ff9 100644
> --- a/fs/nfs/Makefile
> +++ b/fs/nfs/Makefile
> @@ -19,5 +19,5 @@ nfs-$(CONFIG_NFS_V4_1) += pnfs.o
> nfs-$(CONFIG_SYSCTL) += sysctl.o
> nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o
>
> -obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfslayoutdriver.o
> -nfslayoutdriver-y := nfs4filelayout.o nfs4filelayoutdev.o
> +obj-$(CONFIG_PNFS_FILE_LAYOUT) += nfs_layout_nfsv41_files.o
> +nfs_layout_nfsv41_files-y := nfs4filelayout.o nfs4filelayoutdev.o
> diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
> index 3494d5e..b2fb693 100644
> --- a/fs/nfs/pnfs.c
> +++ b/fs/nfs/pnfs.c
> @@ -210,14 +210,7 @@ set_pnfs_layoutdriver(struct nfs_server *server, u32 id)
> return;
>
> if (!find_pnfs(id, &mod)) {
> - switch (id) {
> - case LAYOUT_NFSV4_1_FILES:
> - request_module(LAYOUT_NFSV4_1_FILES_MODULE);
> - break;
> - default:
> - goto out_not_found;
> - };
> -
> + request_module("%s-%u", LAYOUT_NFSV4_1_MODULE_PREFIX, id);
> find_pnfs(id, &mod);
> }
>
> @@ -233,7 +226,6 @@ set_pnfs_layoutdriver(struct nfs_server *server, u32 id)
> return;
> }
>
> -out_not_found:
> dprintk("%s: No pNFS module found for %u. ", __func__, id);
> out_err:
> dprintk("Using NFSv4 I/O\n");
> diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
> index 6bc27af..f48ef24 100644
> --- a/fs/nfs/pnfs.h
> +++ b/fs/nfs/pnfs.h
> @@ -73,7 +73,7 @@ void put_layout(struct inode *inode);
> (srv)->pnfs_curr_ld->ld_policy_ops && \
> (srv)->pnfs_curr_ld->ld_policy_ops->opname)
>
> -#define LAYOUT_NFSV4_1_FILES_MODULE "nfslayoutdriver"
> +#define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4"
>
> static inline int lo_fail_bit(u32 iomode)
> {
--
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