14 		struct page **pagep, void **fsdata)  in logfs_write_begin()
17 	struct page *page;  in logfs_write_begin()  local
20 	page = grab_cache_page_write_begin(mapping, index, flags);  in logfs_write_begin()
21 	if (!page)  in logfs_write_begin()
23 	*pagep = page;  in logfs_write_begin()
25 	if ((len == PAGE_CACHE_SIZE) || PageUptodate(page))  in logfs_write_begin()
32 		zero_user_segments(page, 0, start, end, PAGE_CACHE_SIZE);  in logfs_write_begin()
35 	return logfs_readpage_nolock(page);  in logfs_write_begin()
39 		loff_t pos, unsigned len, unsigned copied, struct page *page,  in logfs_write_end()  argument
43 	pgoff_t index = page->index;  in logfs_write_end()
49 	BUG_ON(page->index > I3_BLOCKS);  in logfs_write_end()
56 		if (!PageUptodate(page)) {  in logfs_write_end()
69 	SetPageUptodate(page);  in logfs_write_end()
70 	if (!PageDirty(page)) {  in logfs_write_end()
71 		if (!get_page_reserve(inode, page))  in logfs_write_end()
72 			__set_page_dirty_nobuffers(page);  in logfs_write_end()
74 			ret = logfs_write_buf(inode, page, WF_LOCK);  in logfs_write_end()
77 	unlock_page(page);  in logfs_write_end()
78 	page_cache_release(page);  in logfs_write_end()
82 int logfs_readpage(struct file *file, struct page *page)  in logfs_readpage()  argument
86 	ret = logfs_readpage_nolock(page);  in logfs_readpage()
87 	unlock_page(page);  in logfs_readpage()
96 static void clear_radix_tree_dirty(struct page *page)  in clear_radix_tree_dirty()  argument
98 	BUG_ON(PagePrivate(page) || page->private);  in clear_radix_tree_dirty()
99 	set_page_writeback(page);  in clear_radix_tree_dirty()
100 	end_page_writeback(page);  in clear_radix_tree_dirty()
103 static int __logfs_writepage(struct page *page)  in __logfs_writepage()  argument
105 	struct inode *inode = page->mapping->host;  in __logfs_writepage()
108 	err = logfs_write_buf(inode, page, WF_LOCK);  in __logfs_writepage()
110 		set_page_dirty(page);  in __logfs_writepage()
112 		clear_radix_tree_dirty(page);  in __logfs_writepage()
113 	unlock_page(page);  in __logfs_writepage()
117 static int logfs_writepage(struct page *page, struct writeback_control *wbc)  in logfs_writepage()  argument
119 	struct inode *inode = page->mapping->host;  in logfs_writepage()
126 	log_file("logfs_writepage(%lx, %lx, %p)\n", inode->i_ino, page->index,  in logfs_writepage()
127 			page);  in logfs_writepage()
129 	logfs_unpack_index(page->index, &bix, &level);  in logfs_writepage()
133 		return __logfs_writepage(page);  in logfs_writepage()
142 		return __logfs_writepage(page);  in logfs_writepage()
147 		unlock_page(page);  in logfs_writepage()
158 	zero_user_segment(page, offset, PAGE_CACHE_SIZE);  in logfs_writepage()
159 	return __logfs_writepage(page);  in logfs_writepage()
162 static void logfs_invalidatepage(struct page *page, unsigned int offset,  in logfs_invalidatepage()  argument
165 	struct logfs_block *block = logfs_block(page);  in logfs_invalidatepage()
168 		struct super_block *sb = page->mapping->host->i_sb;  in logfs_invalidatepage()
175 		move_page_to_btree(page);  in logfs_invalidatepage()
176 	BUG_ON(PagePrivate(page) || page->private);  in logfs_invalidatepage()
179 static int logfs_releasepage(struct page *page, gfp_t only_xfs_uses_this)  in logfs_releasepage()  argument