NFSv4: Add post-op attributes to nfs4_proc_link()
Optimise attribute revalidation when hardlinking. Add post-op attributes
for the directory and the original inode.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 7be3d2d..04995e3 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1724,22 +1724,34 @@
static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
+ struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_link_arg arg = {
.fh = NFS_FH(inode),
.dir_fh = NFS_FH(dir),
.name = name,
+ .bitmask = server->attr_bitmask,
};
- struct nfs4_change_info cinfo = { };
+ struct nfs_fattr fattr, dir_attr;
+ struct nfs4_link_res res = {
+ .server = server,
+ .fattr = &fattr,
+ .dir_attr = &dir_attr,
+ };
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
.rpc_argp = &arg,
- .rpc_resp = &cinfo,
+ .rpc_resp = &res,
};
int status;
- status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
- if (!status)
- update_changeattr(dir, &cinfo);
+ nfs_fattr_init(res.fattr);
+ nfs_fattr_init(res.dir_attr);
+ status = rpc_call_sync(server->client, &msg, 0);
+ if (!status) {
+ update_changeattr(dir, &res.cinfo);
+ nfs_post_op_update_inode(dir, res.dir_attr);
+ nfs_refresh_inode(inode, res.fattr);
+ }
return status;
}
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index cd9e26c..f624b69 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -324,12 +324,18 @@
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
- encode_link_maxsz)
+ encode_link_maxsz + \
+ decode_getattr_maxsz + \
+ encode_restorefh_maxsz + \
+ decode_getattr_maxsz)
#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
- decode_link_maxsz)
+ decode_link_maxsz + \
+ decode_getattr_maxsz + \
+ decode_restorefh_maxsz + \
+ decode_getattr_maxsz)
#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_symlink_maxsz + \
@@ -1357,7 +1363,7 @@
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
- .nops = 4,
+ .nops = 7,
};
int status;
@@ -1369,7 +1375,13 @@
goto out;
if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
goto out;
- status = encode_link(&xdr, args->name);
+ if ((status = encode_link(&xdr, args->name)) != 0)
+ goto out;
+ if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
+ goto out;
+ if ((status = encode_restorefh(&xdr)) != 0)
+ goto out;
+ status = encode_getfattr(&xdr, args->bitmask);
out:
return status;
}
@@ -3529,7 +3541,7 @@
/*
* Decode LINK response
*/
-static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
+static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_link_res *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
@@ -3544,7 +3556,17 @@
goto out;
if ((status = decode_putfh(&xdr)) != 0)
goto out;
- status = decode_link(&xdr, cinfo);
+ if ((status = decode_link(&xdr, &res->cinfo)) != 0)
+ goto out;
+ /*
+ * Note order: OP_LINK leaves the directory as the current
+ * filehandle.
+ */
+ if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
+ goto out;
+ if ((status = decode_restorefh(&xdr)) != 0)
+ goto out;
+ decode_getfattr(&xdr, res->fattr, res->server);
out:
return status;
}
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 4f03dc2..89238b7 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -566,8 +566,17 @@
const struct nfs_fh * fh;
const struct nfs_fh * dir_fh;
const struct qstr * name;
+ const u32 * bitmask;
};
+struct nfs4_link_res {
+ const struct nfs_server * server;
+ struct nfs_fattr * fattr;
+ struct nfs4_change_info cinfo;
+ struct nfs_fattr * dir_attr;
+};
+
+
struct nfs4_lookup_arg {
const struct nfs_fh * dir_fh;
const struct qstr * name;
