/*
- * Copyright (c) 2006 QLogic, Inc. All rights reserved.
+ * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
return ret;
}
-/**
- * ipath_get_user_pages_nocopy - lock a single page for I/O and mark shared
- * @start_page: the page to lock
- * @p: the output page structure
- *
- * This is similar to ipath_get_user_pages, but it's always one page, and we
- * mark the page as locked for I/O, and shared. This is used for the user
- * process page that contains the destination address for the rcvhdrq tail
- * update, so we need to have the vma. If we don't do this, the page can be
- * taken away from us on fork, even if the child never touches it, and then
- * the user process never sees the tail register updates.
- */
-int ipath_get_user_pages_nocopy(unsigned long page, struct page **p)
-{
- struct vm_area_struct *vma;
- int ret;
-
- down_write(¤t->mm->mmap_sem);
-
- ret = __get_user_pages(page, 1, p, &vma);
-
- up_write(¤t->mm->mmap_sem);
-
- return ret;
-}
-
void ipath_release_user_pages(struct page **p, size_t num_pages)
{
down_write(¤t->mm->mmap_sem);
unsigned long num_pages;
};
-static void user_pages_account(void *ptr)
+static void user_pages_account(struct work_struct *_work)
{
- struct ipath_user_pages_work *work = ptr;
+ struct ipath_user_pages_work *work =
+ container_of(_work, struct ipath_user_pages_work, work);
down_write(&work->mm->mmap_sem);
work->mm->locked_vm -= work->num_pages;
goto bail;
- INIT_WORK(&work->work, user_pages_account, work);
+ INIT_WORK(&work->work, user_pages_account);
work->mm = mm;
work->num_pages = num_pages;