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| author | Christoph Hellwig | 2014-09-03 06:27:57 +0200 |
|---|---|---|
| committer | Trond Myklebust | 2014-09-10 21:47:03 +0200 |
| commit | 661373b13d0490ff410a2133d4a7a117f2dd037e (patch) | |
| tree | a2f515ecbc46316adfd1b937d62eeb9a48957d1c /fs/nfs/pnfs.h | |
| parent | pnfs/blocklayout: return layouts on setattr (diff) | |
| download | kernel-qcow2-linux-661373b13d0490ff410a2133d4a7a117f2dd037e.tar.gz kernel-qcow2-linux-661373b13d0490ff410a2133d4a7a117f2dd037e.tar.xz kernel-qcow2-linux-661373b13d0490ff410a2133d4a7a117f2dd037e.zip | |
pnfs: factor GETDEVICEINFO implementations
Add support to the common pNFS core to issue GETDEVICEINFO calls on
a device ID cache miss. The code is taken from the well debugged
file layout implementation and calls out to the layoutdriver through
a new alloc_deviceid_node method. The calling conventions for
nfs4_find_get_deviceid are changed so that all information needed to
send a GETDEVICEINFO request is passed to the common code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
| -rw-r--r-- | fs/nfs/pnfs.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 2c2494225930..ce89ae364bb8 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -84,6 +84,7 @@ struct pnfs_layoutdriver_type { const char *name; struct module *owner; unsigned flags; + unsigned max_deviceinfo_size; int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); int (*clear_layoutdriver) (struct nfs_server *); @@ -126,6 +127,9 @@ struct pnfs_layoutdriver_type { enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); void (*free_deviceid_node) (struct nfs4_deviceid_node *); + struct nfs4_deviceid_node * (*alloc_deviceid_node) + (struct nfs_server *server, struct pnfs_device *pdev, + gfp_t gfp_flags); void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, struct xdr_stream *xdr, @@ -261,11 +265,12 @@ struct nfs4_deviceid_node { atomic_t ref; }; -struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); +struct nfs4_deviceid_node * +nfs4_find_get_deviceid(struct nfs_server *server, + const struct nfs4_deviceid *id, struct rpc_cred *cred, + gfp_t gfp_mask); void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); -void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, - const struct pnfs_layoutdriver_type *, - const struct nfs_client *, +void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, const struct nfs4_deviceid *); struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *); bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); |