nilfs2: fix lock order reversal in nilfs_clean_segments ioctl

[safe/jmp/linux-2.6] / fs / fuse / dir.c

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index f310768..8b8eebc 100644 (file)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -224,7 +224,7 @@ static int invalid_nodeid(u64 nodeid)
        return !nodeid || nodeid == FUSE_ROOT_ID;
 }
 
-struct dentry_operations fuse_dentry_operations = {
+const struct dentry_operations fuse_dentry_operations = {
        .d_revalidate   = fuse_dentry_revalidate,
 };
 
@@ -871,18 +871,25 @@ int fuse_update_attributes(struct inode *inode, struct kstat *stat,
  */
 int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task)
 {
+       const struct cred *cred;
+       int ret;
+
        if (fc->flags & FUSE_ALLOW_OTHER)
                return 1;
 
-       if (task->euid == fc->user_id &&
-           task->suid == fc->user_id &&
-           task->uid == fc->user_id &&
-           task->egid == fc->group_id &&
-           task->sgid == fc->group_id &&
-           task->gid == fc->group_id)
-               return 1;
+       rcu_read_lock();
+       ret = 0;
+       cred = __task_cred(task);
+       if (cred->euid == fc->user_id &&
+           cred->suid == fc->user_id &&
+           cred->uid  == fc->user_id &&
+           cred->egid == fc->group_id &&
+           cred->sgid == fc->group_id &&
+           cred->gid  == fc->group_id)
+               ret = 1;
+       rcu_read_unlock();
 
-       return 0;
+       return ret;
 }
 
 static int fuse_access(struct inode *inode, int mask)
@@ -1025,6 +1032,7 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir)
                fuse_put_request(fc, req);
                return -ENOMEM;
        }
+       req->out.argpages = 1;
        req->num_pages = 1;
        req->pages[0] = page;
        fuse_read_fill(req, file, inode, file->f_pos, PAGE_SIZE, FUSE_READDIR);