Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

[pandora-kernel.git] / fs / nfs / nfs4state.c

diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 96524c5..f575a31 100644 (file)
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -46,6 +46,7 @@
 #include <linux/kthread.h>
 #include <linux/module.h>
 #include <linux/random.h>
+#include <linux/ratelimit.h>
 #include <linux/workqueue.h>
 #include <linux/bitops.h>
 
@@ -53,6 +54,7 @@
 #include "callback.h"
 #include "delegation.h"
 #include "internal.h"
+#include "pnfs.h"
 
 #define OPENOWNER_POOL_SIZE    8
 
@@ -1063,6 +1065,14 @@ restart:
                                /* Mark the file as being 'closed' */
                                state->state = 0;
                                break;
+                       case -EKEYEXPIRED:
+                               /*
+                                * User RPCSEC_GSS context has expired.
+                                * We cannot recover this stateid now, so
+                                * skip it and allow recovery thread to
+                                * proceed.
+                                */
+                               break;
                        case -NFS4ERR_ADMIN_REVOKED:
                        case -NFS4ERR_STALE_STATEID:
                        case -NFS4ERR_BAD_STATEID:
@@ -1138,16 +1148,14 @@ static void nfs4_reclaim_complete(struct nfs_client *clp,
                (void)ops->reclaim_complete(clp);
 }
 
-static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
+static int nfs4_state_clear_reclaim_reboot(struct nfs_client *clp)
 {
        struct nfs4_state_owner *sp;
        struct rb_node *pos;
        struct nfs4_state *state;
 
        if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
-               return;
-
-       nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops);
+               return 0;
 
        for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
                sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
@@ -1161,6 +1169,14 @@ static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
        }
 
        nfs_delegation_reap_unclaimed(clp);
+       return 1;
+}
+
+static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
+{
+       if (!nfs4_state_clear_reclaim_reboot(clp))
+               return;
+       nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops);
 }
 
 static void nfs_delegation_clear_all(struct nfs_client *clp)
@@ -1175,6 +1191,14 @@ static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp)
        nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
 }
 
+static void nfs4_warn_keyexpired(const char *s)
+{
+       printk_ratelimited(KERN_WARNING "Error: state manager"
+                       " encountered RPCSEC_GSS session"
+                       " expired against NFSv4 server %s.\n",
+                       s);
+}
+
 static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
 {
        switch (error) {
@@ -1187,7 +1211,7 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
                case -NFS4ERR_STALE_CLIENTID:
                case -NFS4ERR_LEASE_MOVED:
                        set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
-                       nfs4_state_end_reclaim_reboot(clp);
+                       nfs4_state_clear_reclaim_reboot(clp);
                        nfs4_state_start_reclaim_reboot(clp);
                        break;
                case -NFS4ERR_EXPIRED:
@@ -1204,6 +1228,10 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
                        set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
                        /* Zero session reset errors */
                        return 0;
+               case -EKEYEXPIRED:
+                       /* Nothing we can do */
+                       nfs4_warn_keyexpired(clp->cl_hostname);
+                       return 0;
        }
        return error;
 }
@@ -1414,9 +1442,10 @@ static void nfs4_set_lease_expired(struct nfs_client *clp, int status)
                case -NFS4ERR_DELAY:
                case -NFS4ERR_CLID_INUSE:
                case -EAGAIN:
-               case -EKEYEXPIRED:
                        break;
 
+               case -EKEYEXPIRED:
+                       nfs4_warn_keyexpired(clp->cl_hostname);
                case -NFS4ERR_NOT_SAME: /* FixMe: implement recovery
                                         * in nfs4_exchange_id */
                default:
@@ -1447,6 +1476,7 @@ static void nfs4_state_manager(struct nfs_client *clp)
                        }
                        clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state);
                        set_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state);
+                       pnfs_destroy_all_layouts(clp);
                }
 
                if (test_and_clear_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state)) {