Merge tag 'v3.4-rc6' into drm-intel-next

Conflicts:
	drivers/gpu/drm/i915/intel_display.c

Ok, this is a fun story of git totally messing things up. There
/shouldn't/ be any conflict in here, because the fixes in -rc6 do only
touch functions that have not been changed in -next.

The offending commits in drm-next are 14415745b2..1fa611065 which
simply move a few functions from intel_display.c to intel_pm.c. The
problem seems to be that git diff gets completely confused:

$ git diff 14415745b2..1fa611065

is a nice mess in intel_display.c, and the diff leaks into totally
unrelated functions, whereas

$git diff --minimal  14415745b2..1fa611065

is exactly what we want.

Unfortunately there seems to be no way to teach similar smarts to the
merge diff and conflict generation code, because with the minimal diff
there really shouldn't be any conflicts. For added hilarity, every
time something in that area changes the + and - lines in the diff move
around like crazy, again resulting in new conflicts. So I fear this
mess will stay with us for a little longer (and might result in
another backmerge down the road).

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 27 insertions, 66 deletions

diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 1807866bb3ab..d51868e5683c 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -148,66 +148,31 @@ rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors)
         return pseudoflavor;
 }
 
-static int nfs_negotiate_security(const struct dentry *parent,
-                                  const struct dentry *dentry,
-                                  rpc_authflavor_t *flavor)
+static struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir,
+                                              struct qstr *name,
+                                              struct nfs_fh *fh,
+                                              struct nfs_fattr *fattr)
 {
-        struct page *page;
-        struct nfs4_secinfo_flavors *flavors;
-        int (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
-        int ret = -EPERM;
-
-        secinfo = NFS_PROTO(parent->d_inode)->secinfo;
-        if (secinfo != NULL) {
-                page = alloc_page(GFP_KERNEL);
-                if (!page) {
-                        ret = -ENOMEM;
-                        goto out;
-                }
-                flavors = page_address(page);
-                ret = secinfo(parent->d_inode, &dentry->d_name, flavors);
-                *flavor = nfs_find_best_sec(flavors);
-                put_page(page);
-        }
-
-out:
-        return ret;
-}
-
-static int nfs_lookup_with_sec(struct nfs_server *server, struct dentry *parent,
-                               struct dentry *dentry, struct path *path,
-                               struct nfs_fh *fh, struct nfs_fattr *fattr,
-                               rpc_authflavor_t *flavor)
-{
-        struct rpc_clnt *clone;
-        struct rpc_auth *auth;
         int err;
 
-        err = nfs_negotiate_security(parent, path->dentry, flavor);
-        if (err < 0)
-                goto out;
-        clone  = rpc_clone_client(server->client);
-        auth   = rpcauth_create(*flavor, clone);
-        if (!auth) {
-                err = -EIO;
-                goto out_shutdown;
-        }
-        err = server->nfs_client->rpc_ops->lookup(clone, parent->d_inode,
-                                                  &path->dentry->d_name,
-                                                  fh, fattr);
-out_shutdown:
-        rpc_shutdown_client(clone);
-out:
-        return err;
+        if (NFS_PROTO(dir)->version == 4)
+                return nfs4_proc_lookup_mountpoint(dir, name, fh, fattr);
+
+        err = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, name, fh, fattr);
+        if (err)
+                return ERR_PTR(err);
+        return rpc_clone_client(NFS_SERVER(dir)->client);
 }
 #else /* CONFIG_NFS_V4 */
-static inline int nfs_lookup_with_sec(struct nfs_server *server,
-                                      struct dentry *parent, struct dentry *dentry,
-                                      struct path *path, struct nfs_fh *fh,
-                                      struct nfs_fattr *fattr,
-                                      rpc_authflavor_t *flavor)
+static inline struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir,
+                                                     struct qstr *name,
+                                                     struct nfs_fh *fh,
+                                                     struct nfs_fattr *fattr)
 {
-        return -EPERM;
+        int err = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, name, fh, fattr);
+        if (err)
+                return ERR_PTR(err);
+        return rpc_clone_client(NFS_SERVER(dir)->client);
 }
 #endif /* CONFIG_NFS_V4 */
 
@@ -226,12 +191,10 @@ static inline int nfs_lookup_with_sec(struct nfs_server *server,
 struct vfsmount *nfs_d_automount(struct path *path)
 {
         struct vfsmount *mnt;
-        struct nfs_server *server = NFS_SERVER(path->dentry->d_inode);
         struct dentry *parent;
         struct nfs_fh *fh = NULL;
         struct nfs_fattr *fattr = NULL;
-        int err;
-        rpc_authflavor_t flavor = RPC_AUTH_UNIX;
+        struct rpc_clnt *client;
 
         dprintk("--> nfs_d_automount()\n");
 
@@ -249,21 +212,19 @@ struct vfsmount *nfs_d_automount(struct path *path)
 
         /* Look it up again to get its attributes */
         parent = dget_parent(path->dentry);
-        err = server->nfs_client->rpc_ops->lookup(server->client, parent->d_inode,
-                                                  &path->dentry->d_name,
-                                                  fh, fattr);
-        if (err == -EPERM && NFS_PROTO(parent->d_inode)->secinfo != NULL)
-                err = nfs_lookup_with_sec(server, parent, path->dentry, path, fh, fattr, &flavor);
+        client = nfs_lookup_mountpoint(parent->d_inode, &path->dentry->d_name, fh, fattr);
         dput(parent);
-        if (err != 0) {
-                mnt = ERR_PTR(err);
+        if (IS_ERR(client)) {
+                mnt = ERR_CAST(client);
                 goto out;
         }
 
         if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
-                mnt = nfs_do_refmount(path->dentry);
+                mnt = nfs_do_refmount(client, path->dentry);
         else
-                mnt = nfs_do_submount(path->dentry, fh, fattr, flavor);
+                mnt = nfs_do_submount(path->dentry, fh, fattr, client->cl_auth->au_flavor);
+        rpc_shutdown_client(client);
+
         if (IS_ERR(mnt))
                 goto out;