Merge branch 'percpu-for-linus' into percpu-for-next

Conflicts:
	arch/sparc/kernel/smp_64.c
	arch/x86/kernel/cpu/perf_counter.c
	arch/x86/kernel/setup_percpu.c
	drivers/cpufreq/cpufreq_ondemand.c
	mm/percpu.c

Conflicts in core and arch percpu codes are mostly from commit
ed78e1e078dd44249f88b1dd8c76dafb39567161 which substituted many
num_possible_cpus() with nr_cpu_ids.  As for-next branch has moved all
the first chunk allocators into mm/percpu.c, the changes are moved
from arch code to mm/percpu.c.

Signed-off-by: Tejun Heo <tj@kernel.org>

12 files changed, 60 insertions, 55 deletions

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index c2d061675d80..8d25ccb2d51d 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -1242,20 +1242,6 @@ error:
         return error;
 }
 
-/*
- * Initialize a session.
- * Note: save the mount rsize and wsize for create_server negotiation.
- */
-static void nfs4_init_session(struct nfs_client *clp,
-                              unsigned int wsize, unsigned int rsize)
-{
-#if defined(CONFIG_NFS_V4_1)
-        if (nfs4_has_session(clp)) {
-                clp->cl_session->fc_attrs.max_rqst_sz = wsize;
-                clp->cl_session->fc_attrs.max_resp_sz = rsize;
-        }
-#endif /* CONFIG_NFS_V4_1 */
-}
 
 /*
  * Session has been established, and the client marked ready.
@@ -1350,7 +1336,9 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
         BUG_ON(!server->nfs_client->rpc_ops);
         BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
 
-        nfs4_init_session(server->nfs_client, server->wsize, server->rsize);
+        error = nfs4_init_session(server);
+        if (error < 0)
+                goto error;
 
         /* Probe the root fh to retrieve its FSID */
         error = nfs4_path_walk(server, mntfh, data->nfs_server.export_path);
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index af05b918cb5b..6dd48a4405b4 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -10,6 +10,7 @@
 #include <linux/kthread.h>
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/smp_lock.h>
 #include <linux/spinlock.h>
 
 #include <linux/nfs4.h>
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 89f98e9a024b..32062c33c859 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -29,7 +29,6 @@
 #include <linux/nfs_fs.h>
 #include <linux/nfs_mount.h>
 #include <linux/pagemap.h>
-#include <linux/smp_lock.h>
 #include <linux/pagevec.h>
 #include <linux/namei.h>
 #include <linux/mount.h>
@@ -1026,12 +1025,12 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
                                 res = NULL;
                                 goto out;
                         /* This turned out not to be a regular file */
-                        case -EISDIR:
                         case -ENOTDIR:
                                 goto no_open;
                         case -ELOOP:
                                 if (!(nd->intent.open.flags & O_NOFOLLOW))
                                         goto no_open;
+                        /* case -EISDIR: */
                         /* case -EINVAL: */
                         default:
                                 goto out;
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 489fc01a3204..e4e089a8f294 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -255,7 +255,7 @@ static void nfs_direct_read_release(void *calldata)
 
         if (put_dreq(dreq))
                 nfs_direct_complete(dreq);
-        nfs_readdata_release(calldata);
+        nfs_readdata_free(data);
 }
 
 static const struct rpc_call_ops nfs_read_direct_ops = {
@@ -314,14 +314,14 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
                                         data->npages, 1, 0, data->pagevec, NULL);
                 up_read(&current->mm->mmap_sem);
                 if (result < 0) {
-                        nfs_readdata_release(data);
+                        nfs_readdata_free(data);
                         break;
                 }
                 if ((unsigned)result < data->npages) {
                         bytes = result * PAGE_SIZE;
                         if (bytes <= pgbase) {
                                 nfs_direct_release_pages(data->pagevec, result);
-                                nfs_readdata_release(data);
+                                nfs_readdata_free(data);
                                 break;
                         }
                         bytes -= pgbase;
@@ -334,7 +334,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
                 data->inode = inode;
                 data->cred = msg.rpc_cred;
                 data->args.fh = NFS_FH(inode);
-                data->args.context = get_nfs_open_context(ctx);
+                data->args.context = ctx;
                 data->args.offset = pos;
                 data->args.pgbase = pgbase;
                 data->args.pages = data->pagevec;
@@ -441,7 +441,7 @@ static void nfs_direct_free_writedata(struct nfs_direct_req *dreq)
                 struct nfs_write_data *data = list_entry(dreq->rewrite_list.next, struct nfs_write_data, pages);
                 list_del(&data->pages);
                 nfs_direct_release_pages(data->pagevec, data->npages);
-                nfs_writedata_release(data);
+                nfs_writedata_free(data);
         }
 }
 
@@ -534,7 +534,7 @@ static void nfs_direct_commit_release(void *calldata)
 
         dprintk("NFS: %5u commit returned %d\n", data->task.tk_pid, status);
         nfs_direct_write_complete(dreq, data->inode);
-        nfs_commitdata_release(calldata);
+        nfs_commit_free(data);
 }
 
 static const struct rpc_call_ops nfs_commit_direct_ops = {
@@ -570,7 +570,7 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
         data->args.fh = NFS_FH(data->inode);
         data->args.offset = 0;
         data->args.count = 0;
-        data->args.context = get_nfs_open_context(dreq->ctx);
+        data->args.context = dreq->ctx;
         data->res.count = 0;
         data->res.fattr = &data->fattr;
         data->res.verf = &data->verf;
@@ -734,14 +734,14 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
                                         data->npages, 0, 0, data->pagevec, NULL);
                 up_read(&current->mm->mmap_sem);
                 if (result < 0) {
-                        nfs_writedata_release(data);
+                        nfs_writedata_free(data);
                         break;
                 }
                 if ((unsigned)result < data->npages) {
                         bytes = result * PAGE_SIZE;
                         if (bytes <= pgbase) {
                                 nfs_direct_release_pages(data->pagevec, result);
-                                nfs_writedata_release(data);
+                                nfs_writedata_free(data);
                                 break;
                         }
                         bytes -= pgbase;
@@ -756,7 +756,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
                 data->inode = inode;
                 data->cred = msg.rpc_cred;
                 data->args.fh = NFS_FH(inode);
-                data->args.context = get_nfs_open_context(ctx);
+                data->args.context = ctx;
                 data->args.offset = pos;
                 data->args.pgbase = pgbase;
                 data->args.pages = data->pagevec;
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 0055b813ec2c..05062329b678 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -26,7 +26,6 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/pagemap.h>
-#include <linux/smp_lock.h>
 #include <linux/aio.h>
 
 #include <asm/uaccess.h>
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index 46177cb87064..b35d2a616066 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -30,7 +30,6 @@
 #include <linux/nfs_idmap.h>
 #include <linux/vfs.h>
 #include <linux/namei.h>
-#include <linux/mnt_namespace.h>
 #include <linux/security.h>
 
 #include <asm/system.h>
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 64f87194d390..bd7938eda6a8 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -30,7 +30,6 @@
 #include <linux/nfs_mount.h>
 #include <linux/nfs4_mount.h>
 #include <linux/lockd/bind.h>
-#include <linux/smp_lock.h>
 #include <linux/seq_file.h>
 #include <linux/mount.h>
 #include <linux/nfs_idmap.h>
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 61bc3a32e1e2..6ea07a3c75d4 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -220,6 +220,7 @@ extern void nfs4_destroy_session(struct nfs4_session *session);
 extern struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp);
 extern int nfs4_proc_create_session(struct nfs_client *, int reset);
 extern int nfs4_proc_destroy_session(struct nfs4_session *);
+extern int nfs4_init_session(struct nfs_server *server);
 #else /* CONFIG_NFS_v4_1 */
 static inline int nfs4_setup_sequence(struct nfs_client *clp,
                 struct nfs4_sequence_args *args, struct nfs4_sequence_res *res,
@@ -227,6 +228,11 @@ static inline int nfs4_setup_sequence(struct nfs_client *clp,
 {
         return 0;
 }
+
+static inline int nfs4_init_session(struct nfs_server *server)
+{
+        return 0;
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 extern struct nfs4_state_maintenance_ops *nfs4_state_renewal_ops[];
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 92ce43517814..6917311f201c 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -45,7 +45,6 @@
 #include <linux/nfs4.h>
 #include <linux/nfs_fs.h>
 #include <linux/nfs_page.h>
-#include <linux/smp_lock.h>
 #include <linux/namei.h>
 #include <linux/mount.h>
 #include <linux/module.h>
@@ -2041,15 +2040,9 @@ static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
                 .rpc_argp = &args,
                 .rpc_resp = &res,
         };
-        int status;
 
         nfs_fattr_init(info->fattr);
-        status = nfs4_recover_expired_lease(server);
-        if (!status)
-                status = nfs4_check_client_ready(server->nfs_client);
-        if (!status)
-                status = nfs4_call_sync(server, &msg, &args, &res, 0);
-        return status;
+        return nfs4_call_sync(server, &msg, &args, &res, 0);
 }
 
 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
@@ -4100,15 +4093,23 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
         if (request->fl_start < 0 || request->fl_end < 0)
                 return -EINVAL;
 
-        if (IS_GETLK(cmd))
-                return nfs4_proc_getlk(state, F_GETLK, request);
+        if (IS_GETLK(cmd)) {
+                if (state != NULL)
+                        return nfs4_proc_getlk(state, F_GETLK, request);
+                return 0;
+        }
 
         if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
                 return -EINVAL;
 
-        if (request->fl_type == F_UNLCK)
-                return nfs4_proc_unlck(state, cmd, request);
+        if (request->fl_type == F_UNLCK) {
+                if (state != NULL)
+                        return nfs4_proc_unlck(state, cmd, request);
+                return 0;
+        }
 
+        if (state == NULL)
+                return -ENOLCK;
         do {
                 status = nfs4_proc_setlk(state, cmd, request);
                 if ((status != -EAGAIN) || IS_SETLK(cmd))
@@ -4794,6 +4795,22 @@ int nfs4_proc_destroy_session(struct nfs4_session *session)
         return status;
 }
 
+int nfs4_init_session(struct nfs_server *server)
+{
+        struct nfs_client *clp = server->nfs_client;
+        int ret;
+
+        if (!nfs4_has_session(clp))
+                return 0;
+
+        clp->cl_session->fc_attrs.max_rqst_sz = server->wsize;
+        clp->cl_session->fc_attrs.max_resp_sz = server->rsize;
+        ret = nfs4_recover_expired_lease(server);
+        if (!ret)
+                ret = nfs4_check_client_ready(clp);
+        return ret;
+}
+
 /*
  * Renew the cl_session lease.
  */
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index b73c5a728655..65ca8c18476f 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -553,6 +553,7 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f
         INIT_LIST_HEAD(&lsp->ls_sequence.list);
         lsp->ls_seqid.sequence = &lsp->ls_sequence;
         atomic_set(&lsp->ls_count, 1);
+        lsp->ls_state = state;
         lsp->ls_owner = fl_owner;
         spin_lock(&clp->cl_lock);
         nfs_alloc_unique_id(&clp->cl_lockowner_id, &lsp->ls_id, 1, 64);
@@ -587,7 +588,6 @@ static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_
                 if (lsp != NULL)
                         break;
                 if (new != NULL) {
-                        new->ls_state = state;
                         list_add(&new->ls_locks, &state->lock_states);
                         set_bit(LK_STATE_IN_USE, &state->flags);
                         lsp = new;
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 96c4ebfa46f4..12c9e66d3f1d 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -18,7 +18,6 @@
 #include <linux/sunrpc/clnt.h>
 #include <linux/nfs_fs.h>
 #include <linux/nfs_page.h>
-#include <linux/smp_lock.h>
 
 #include <asm/system.h>
 
@@ -61,17 +60,15 @@ struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
         return p;
 }
 
-static void nfs_readdata_free(struct nfs_read_data *p)
+void nfs_readdata_free(struct nfs_read_data *p)
 {
         if (p && (p->pagevec != &p->page_array[0]))
                 kfree(p->pagevec);
         mempool_free(p, nfs_rdata_mempool);
 }
 
-void nfs_readdata_release(void *data)
+static void nfs_readdata_release(struct nfs_read_data *rdata)
 {
-        struct nfs_read_data *rdata = data;
-
         put_nfs_open_context(rdata->args.context);
         nfs_readdata_free(rdata);
 }
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index ce728829f79a..a34fae21fe10 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -87,17 +87,15 @@ struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount)
         return p;
 }
 
-static void nfs_writedata_free(struct nfs_write_data *p)
+void nfs_writedata_free(struct nfs_write_data *p)
 {
         if (p && (p->pagevec != &p->page_array[0]))
                 kfree(p->pagevec);
         mempool_free(p, nfs_wdata_mempool);
 }
 
-void nfs_writedata_release(void *data)
+static void nfs_writedata_release(struct nfs_write_data *wdata)
 {
-        struct nfs_write_data *wdata = data;
-
         put_nfs_open_context(wdata->args.context);
         nfs_writedata_free(wdata);
 }
@@ -202,8 +200,10 @@ static int nfs_set_page_writeback(struct page *page)
                 struct nfs_server *nfss = NFS_SERVER(inode);
 
                 if (atomic_long_inc_return(&nfss->writeback) >
-                                NFS_CONGESTION_ON_THRESH)
-                        set_bdi_congested(&nfss->backing_dev_info, WRITE);
+                                NFS_CONGESTION_ON_THRESH) {
+                        set_bdi_congested(&nfss->backing_dev_info,
+                                                BLK_RW_ASYNC);
+                }
         }
         return ret;
 }
@@ -215,7 +215,7 @@ static void nfs_end_page_writeback(struct page *page)
 
         end_page_writeback(page);
         if (atomic_long_dec_return(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
-                clear_bdi_congested(&nfss->backing_dev_info, WRITE);
+                clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC);
 }
 
 /*