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| author | Christoph Hellwig <hch@lst.de> | 2015-01-21 11:40:00 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2015-02-05 14:35:18 +0100 |
| commit | 8650b8a058502d6957ba13dfb5544724fa038118 (patch) | |
| tree | 38b0135cf5f5692e5f766332b8470ef9050e7980 /fs/nfsd/nfs4layouts.c | |
| parent | 7fbc1067f06098c6b674e672fbb17e758fcc9402 (diff) | |
| download | linux-8650b8a058502d6957ba13dfb5544724fa038118.tar.bz2 | |
nfsd: pNFS block layout driver
Add a small shim between core nfsd and filesystems to translate the
somewhat cumbersome pNFS data structures and semantics to something
more palatable for Linux filesystems.
Thanks to Rick McNeal for the old prototype pNFS blocklayout server
code, which gave a lot of inspiration to this version even if no
code is left from it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/nfsd/nfs4layouts.c')
| -rw-r--r-- | fs/nfsd/nfs4layouts.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c index 60137c54b2f7..3c1bfa155571 100644 --- a/fs/nfsd/nfs4layouts.c +++ b/fs/nfsd/nfs4layouts.c @@ -26,6 +26,7 @@ static 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] = { + [LAYOUT_BLOCK_VOLUME] = &bl_layout_ops, }; /* pNFS device ID to export fsid mapping */ @@ -115,8 +116,15 @@ nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp, void nfsd4_setup_layout_type(struct svc_export *exp) { + struct super_block *sb = exp->ex_path.mnt->mnt_sb; + if (exp->ex_flags & NFSEXP_NOPNFS) return; + + 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; } static void |