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NFSv4: Don't do idmapper upcalls for asynchronous RPC calls

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We don't want to cause rpciod to hang...

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2009-08-09 15:06:19 -04:00
parent 62ab460cf5
commit 80e52aced1
1 changed files with 58 additions and 28 deletions
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86
fs/nfs/nfs4xdr.c
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@ -3075,7 +3075,8 @@ static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t
return ret;
}
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
struct nfs_client *clp, uint32_t *uid, int may_sleep)
{
uint32_t len;
__be32 *p;
@ -3088,7 +3089,9 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nf
READ_BUF(4);
READ32(len);
READ_BUF(len);
if (len < XDR_MAX_NETOBJ) {
if (!may_sleep) {
/* do nothing */
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
ret = NFS_ATTR_FATTR_OWNER;
else
@ -3103,7 +3106,8 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nf
return ret;
}
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
struct nfs_client *clp, uint32_t *gid, int may_sleep)
{
uint32_t len;
__be32 *p;
@ -3116,7 +3120,9 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nf
READ_BUF(4);
READ32(len);
READ_BUF(len);
if (len < XDR_MAX_NETOBJ) {
if (!may_sleep) {
/* do nothing */
} else if (len < XDR_MAX_NETOBJ) {
if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
ret = NFS_ATTR_FATTR_GROUP;
else
@ -3466,7 +3472,8 @@ xdr_error:
return status;
}
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
const struct nfs_server *server, int may_sleep)
{
__be32 *savep;
uint32_t attrlen,
@ -3538,12 +3545,14 @@ static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, cons
goto xdr_error;
fattr->valid |= status;
status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid);
status = decode_attr_owner(xdr, bitmap, server->nfs_client,
&fattr->uid, may_sleep);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid);
status = decode_attr_group(xdr, bitmap, server->nfs_client,
&fattr->gid, may_sleep);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
@ -4370,7 +4379,8 @@ static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct
status = decode_open_downgrade(&xdr, res);
if (status != 0)
goto out;
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4397,7 +4407,8 @@ static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_ac
status = decode_access(&xdr, res);
if (status != 0)
goto out;
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4424,7 +4435,8 @@ static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lo
goto out;
if ((status = decode_getfh(&xdr, res->fh)) != 0)
goto out;
status = decode_getfattr(&xdr, res->fattr, res->server);
status = decode_getfattr(&xdr, res->fattr, res->server
,!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4448,7 +4460,8 @@ static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nf
if ((status = decode_putrootfh(&xdr)) != 0)
goto out;
if ((status = decode_getfh(&xdr, res->fh)) == 0)
status = decode_getfattr(&xdr, res->fattr, res->server);
status = decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4473,7 +4486,8 @@ static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_rem
goto out;
if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
goto out;
decode_getfattr(&xdr, &res->dir_attr, res->server);
decode_getfattr(&xdr, &res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4503,11 +4517,13 @@ static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_re
if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
goto out;
/* Current FH is target directory */
if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
if (decode_getfattr(&xdr, res->new_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
if ((status = decode_restorefh(&xdr)) != 0)
goto out;
decode_getfattr(&xdr, res->old_fattr, res->server);
decode_getfattr(&xdr, res->old_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4540,11 +4556,13 @@ static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link
* Note order: OP_LINK leaves the directory as the current
* filehandle.
*/
if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
if (decode_getfattr(&xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
if ((status = decode_restorefh(&xdr)) != 0)
goto out;
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4573,11 +4591,13 @@ static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_cr
goto out;
if ((status = decode_getfh(&xdr, res->fh)) != 0)
goto out;
if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
if (decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
if ((status = decode_restorefh(&xdr)) != 0)
goto out;
decode_getfattr(&xdr, res->dir_fattr, res->server);
decode_getfattr(&xdr, res->dir_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4609,7 +4629,8 @@ static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_g
status = decode_putfh(&xdr);
if (status)
goto out;
status = decode_getfattr(&xdr, res->fattr, res->server);
status = decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4716,7 +4737,8 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_clos
* an ESTALE error. Shouldn't be a problem,
* though, since fattr->valid will remain unset.
*/
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4748,11 +4770,13 @@ static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openr
goto out;
if (decode_getfh(&xdr, &res->fh) != 0)
goto out;
if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
if (decode_getfattr(&xdr, res->f_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
if (decode_restorefh(&xdr) != 0)
goto out;
decode_getfattr(&xdr, res->dir_attr, res->server);
decode_getfattr(&xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4800,7 +4824,8 @@ static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nf
status = decode_open(&xdr, res);
if (status)
goto out;
decode_getfattr(&xdr, res->f_attr, res->server);
decode_getfattr(&xdr, res->f_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -4827,7 +4852,8 @@ static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_se
status = decode_setattr(&xdr);
if (status)
goto out;
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -5001,7 +5027,8 @@ static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writ
status = decode_write(&xdr, res);
if (status)
goto out;
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
if (!status)
status = res->count;
out:
@ -5030,7 +5057,8 @@ static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_wri
status = decode_commit(&xdr, res);
if (status)
goto out;
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -5194,7 +5222,8 @@ static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nf
if (status != 0)
goto out;
status = decode_delegreturn(&xdr);
decode_getfattr(&xdr, res->fattr, res->server);
decode_getfattr(&xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
}
@ -5222,7 +5251,8 @@ static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
goto out;
xdr_enter_page(&xdr, PAGE_SIZE);
status = decode_getfattr(&xdr, &res->fs_locations->fattr,
res->fs_locations->server);
res->fs_locations->server,
!RPC_IS_ASYNC(req->rq_task));
out:
return status;
}