/*
* Write a page to the server. This will be used for NFS swapping only
* (for now), and we currently do this synchronously only.
*
* We are called with the page locked and we unlock it when done.
*/
static int
smb_writepage(struct page *page)
{
struct address_space *mapping = page->mapping;
struct inode *inode;
unsigned long end_index;
unsigned offset = PAGE_CACHE_SIZE;
int err;
if (!mapping)
BUG();
inode = mapping->host;
if (!inode)
BUG();
end_index = inode->i_size >> PAGE_CACHE_SHIFT;
/* easy case */
if (page->index < end_index)
goto do_it;
/* things got complicated... */
offset = inode->i_size & (PAGE_CACHE_SIZE-1);
/* OK, are we completely out? */
if (page->index >= end_index+1 || !offset)
return -EIO;
do_it:
get_page(page);
err = smb_writepage_sync(inode, page, 0, offset);
SetPageUptodate(page);
UnlockPage(page);
put_page(page);
return err;
}
/*
* Write a page to the server. This will be used for NFS swapping only
* (for now), and we currently do this synchronously only.
*
* We are called with the page locked and we unlock it when done.
*/
static int
smb_writepage(struct page *page, struct writeback_control *wbc)
{
struct address_space *mapping = page->mapping;
struct inode *inode;
unsigned long end_index;
unsigned offset = PAGE_CACHE_SIZE;
int err;
BUG_ON(!mapping);
inode = mapping->host;
BUG_ON(!inode);
end_index = inode->i_size >> PAGE_CACHE_SHIFT;
/* easy case */
if (page->index < end_index)
goto do_it;
/* things got complicated... */
offset = inode->i_size & (PAGE_CACHE_SIZE-1);
/* OK, are we completely out? */
if (page->index >= end_index+1 || !offset)
return 0; /* truncated - don't care */
do_it:
page_cache_get(page);
err = smb_writepage_sync(inode, page, 0, offset);
SetPageUptodate(page);
unlock_page(page);
page_cache_release(page);
return err;
}
static int
smb_updatepage(struct file *file, struct page *page, unsigned long offset,
unsigned int count)
{
struct dentry *dentry = file->f_dentry;
DEBUG1("(%s/%s %d@%ld)\n", DENTRY_PATH(dentry),
count, (page->index << PAGE_CACHE_SHIFT)+offset);
return smb_writepage_sync(dentry->d_inode, page, offset, count);
}
