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| author | Chuck Lever <chuck.lever@oracle.com> | 2009-06-17 18:02:10 -0700 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2009-06-17 18:02:10 -0700 |
| commit | a21bdd9b960ccce421b63aa0e3efda4fcdc26f10 (patch) | |
| tree | 5ce808e08fb64140389aa96e2940f1c53468dd12 | |
| parent | c381ad2cf2d5dcd3991bcc8a18fddd9d5c66ccaa (diff) | |
| download | linux-3.10-a21bdd9b960ccce421b63aa0e3efda4fcdc26f10.tar.gz linux-3.10-a21bdd9b960ccce421b63aa0e3efda4fcdc26f10.tar.bz2 linux-3.10-a21bdd9b960ccce421b63aa0e3efda4fcdc26f10.zip | |
NFS: Return error code from nfs_callback_up() to user space
If the kernel cannot start the NFSv4 callback service during a mount
request, it returns -ENOMEM to user space, resulting in this message:
mount.nfs4: Cannot allocate memory
Adjust nfs_alloc_client() and nfs_get_client() to pass NFSv4 callback
start-up errors back to user space so a less mysterious error message
can be displayed by the mount command.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | fs/nfs/client.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 75c9cd2aa11..0e9a1f9743b 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -114,6 +114,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ { struct nfs_client *clp; struct rpc_cred *cred; + int err = -ENOMEM; if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL) goto error_0; @@ -121,7 +122,8 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ clp->rpc_ops = cl_init->rpc_ops; if (cl_init->rpc_ops->version == 4) { - if (nfs_callback_up() < 0) + err = nfs_callback_up(); + if (err < 0) goto error_2; __set_bit(NFS_CS_CALLBACK, &clp->cl_res_state); } @@ -133,6 +135,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_ clp->cl_addrlen = cl_init->addrlen; if (cl_init->hostname) { + err = -ENOMEM; clp->cl_hostname = kstrdup(cl_init->hostname, GFP_KERNEL); if (!clp->cl_hostname) goto error_3; @@ -165,7 +168,7 @@ error_3: error_2: kfree(clp); error_0: - return NULL; + return ERR_PTR(err); } static void nfs4_shutdown_client(struct nfs_client *clp) @@ -456,9 +459,10 @@ static struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_in spin_unlock(&nfs_client_lock); new = nfs_alloc_client(cl_init); - } while (new); + } while (!IS_ERR(new)); - return ERR_PTR(-ENOMEM); + dprintk("--> nfs_get_client() = %ld [failed]\n", PTR_ERR(new)); + return new; /* install a new client and return with it unready */ install_client: |