Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 33 insertions, 32 deletions

diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 8c8eef2b8f26..72bc53683965 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -27,9 +27,8 @@
 #include <linux/workqueue.h>
 #include <linux/sunrpc/rpc_pipe_fs.h>
 #include <linux/sunrpc/cache.h>
-#include <linux/smp_lock.h>
 
-static struct vfsmount *rpc_mount __read_mostly;
+static struct vfsmount *rpc_mnt __read_mostly;
 static int rpc_mount_count;
 
 static struct file_system_type rpc_pipe_fs_type;
@@ -163,11 +162,19 @@ rpc_alloc_inode(struct super_block *sb)
 }
 
 static void
-rpc_destroy_inode(struct inode *inode)
+rpc_i_callback(struct rcu_head *head)
 {
+        struct inode *inode = container_of(head, struct inode, i_rcu);
+        INIT_LIST_HEAD(&inode->i_dentry);
         kmem_cache_free(rpc_inode_cachep, RPC_I(inode));
 }
 
+static void
+rpc_destroy_inode(struct inode *inode)
+{
+        call_rcu(&inode->i_rcu, rpc_i_callback);
+}
+
 static int
 rpc_pipe_open(struct inode *inode, struct file *filp)
 {
@@ -204,7 +211,7 @@ rpc_pipe_release(struct inode *inode, struct file *filp)
         mutex_lock(&inode->i_mutex);
         if (rpci->ops == NULL)
                 goto out;
-        msg = (struct rpc_pipe_msg *)filp->private_data;
+        msg = filp->private_data;
         if (msg != NULL) {
                 spin_lock(&inode->i_lock);
                 msg->errno = -EAGAIN;
@@ -309,40 +316,33 @@ rpc_pipe_poll(struct file *filp, struct poll_table_struct *wait)
         return mask;
 }
 
-static int
-rpc_pipe_ioctl_unlocked(struct file *filp, unsigned int cmd, unsigned long arg)
+static long
+rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
-        struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
+        struct inode *inode = filp->f_path.dentry->d_inode;
+        struct rpc_inode *rpci = RPC_I(inode);
         int len;
 
         switch (cmd) {
         case FIONREAD:
-                if (rpci->ops == NULL)
+                spin_lock(&inode->i_lock);
+                if (rpci->ops == NULL) {
+                        spin_unlock(&inode->i_lock);
                         return -EPIPE;
+                }
                 len = rpci->pipelen;
                 if (filp->private_data) {
                         struct rpc_pipe_msg *msg;
-                        msg = (struct rpc_pipe_msg *)filp->private_data;
+                        msg = filp->private_data;
                         len += msg->len - msg->copied;
                 }
+                spin_unlock(&inode->i_lock);
                 return put_user(len, (int __user *)arg);
         default:
                 return -EINVAL;
         }
 }
 
-static long
-rpc_pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-        long ret;
-
-        lock_kernel();
-        ret = rpc_pipe_ioctl_unlocked(filp, cmd, arg);
-        unlock_kernel();
-
-        return ret;
-}
-
 static const struct file_operations rpc_pipe_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
@@ -425,20 +425,20 @@ struct vfsmount *rpc_get_mount(void)
 {
         int err;
 
-        err = simple_pin_fs(&rpc_pipe_fs_type, &rpc_mount, &rpc_mount_count);
+        err = simple_pin_fs(&rpc_pipe_fs_type, &rpc_mnt, &rpc_mount_count);
         if (err != 0)
                 return ERR_PTR(err);
-        return rpc_mount;
+        return rpc_mnt;
 }
 EXPORT_SYMBOL_GPL(rpc_get_mount);
 
 void rpc_put_mount(void)
 {
-        simple_release_fs(&rpc_mount, &rpc_mount_count);
+        simple_release_fs(&rpc_mnt, &rpc_mount_count);
 }
 EXPORT_SYMBOL_GPL(rpc_put_mount);
 
-static int rpc_delete_dentry(struct dentry *dentry)
+static int rpc_delete_dentry(const struct dentry *dentry)
 {
         return 1;
 }
@@ -453,6 +453,7 @@ rpc_get_inode(struct super_block *sb, umode_t mode)
         struct inode *inode = new_inode(sb);
         if (!inode)
                 return NULL;
+        inode->i_ino = get_next_ino();
         inode->i_mode = mode;
         inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
         switch(mode & S_IFMT) {
@@ -473,7 +474,7 @@ static int __rpc_create_common(struct inode *dir, struct dentry *dentry,
 {
         struct inode *inode;
 
-        BUG_ON(!d_unhashed(dentry));
+        d_drop(dentry);
         inode = rpc_get_inode(dir->i_sb, mode);
         if (!inode)
                 goto out_err;
@@ -590,7 +591,7 @@ static struct dentry *__rpc_lookup_create(struct dentry *parent,
                 }
         }
         if (!dentry->d_inode)
-                dentry->d_op = &rpc_dentry_operations;
+                d_set_d_op(dentry, &rpc_dentry_operations);
 out_err:
         return dentry;
 }
@@ -1025,17 +1026,17 @@ rpc_fill_super(struct super_block *sb, void *data, int silent)
         return 0;
 }
 
-static int
-rpc_get_sb(struct file_system_type *fs_type,
-                int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static struct dentry *
+rpc_mount(struct file_system_type *fs_type,
+                int flags, const char *dev_name, void *data)
 {
-        return get_sb_single(fs_type, flags, data, rpc_fill_super, mnt);
+        return mount_single(fs_type, flags, data, rpc_fill_super);
 }
 
 static struct file_system_type rpc_pipe_fs_type = {
         .owner          = THIS_MODULE,
         .name           = "rpc_pipefs",
-        .get_sb         = rpc_get_sb,
+        .mount          = rpc_mount,
         .kill_sb        = kill_litter_super,
 };