26 			struct page *pg, void *fsdata);
30 static int jffs2_readpage (struct file *filp, struct page *pg);
79 static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)  in jffs2_do_readpage_nolock()  argument
87 		  __func__, inode->i_ino, pg->index << PAGE_SHIFT);  in jffs2_do_readpage_nolock()
89 	BUG_ON(!PageLocked(pg));  in jffs2_do_readpage_nolock()
91 	pg_buf = kmap(pg);  in jffs2_do_readpage_nolock()
94 	ret = jffs2_read_inode_range(c, f, pg_buf, pg->index << PAGE_SHIFT,  in jffs2_do_readpage_nolock()
98 		ClearPageUptodate(pg);  in jffs2_do_readpage_nolock()
99 		SetPageError(pg);  in jffs2_do_readpage_nolock()
101 		SetPageUptodate(pg);  in jffs2_do_readpage_nolock()
102 		ClearPageError(pg);  in jffs2_do_readpage_nolock()
105 	flush_dcache_page(pg);  in jffs2_do_readpage_nolock()
106 	kunmap(pg);  in jffs2_do_readpage_nolock()
112 int jffs2_do_readpage_unlock(void *data, struct page *pg)  in jffs2_do_readpage_unlock()  argument
114 	int ret = jffs2_do_readpage_nolock(data, pg);  in jffs2_do_readpage_unlock()
115 	unlock_page(pg);  in jffs2_do_readpage_unlock()
120 static int jffs2_readpage (struct file *filp, struct page *pg)  in jffs2_readpage()  argument
122 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(pg->mapping->host);  in jffs2_readpage()
126 	ret = jffs2_do_readpage_unlock(pg->mapping->host, pg);  in jffs2_readpage()
135 	struct page *pg;  in jffs2_write_begin()  local
142 	pg = grab_cache_page_write_begin(mapping, index, flags);  in jffs2_write_begin()
143 	if (!pg)  in jffs2_write_begin()
145 	*pagep = pg;  in jffs2_write_begin()
219 	if (!PageUptodate(pg)) {  in jffs2_write_begin()
221 		ret = jffs2_do_readpage_nolock(inode, pg);  in jffs2_write_begin()
226 	jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);  in jffs2_write_begin()
230 	unlock_page(pg);  in jffs2_write_begin()
231 	put_page(pg);  in jffs2_write_begin()
237 			struct page *pg, void *fsdata)  in jffs2_write_end()  argument
253 		  __func__, inode->i_ino, pg->index << PAGE_SHIFT,  in jffs2_write_end()
254 		  start, end, pg->flags);  in jffs2_write_end()
260 	BUG_ON(!PageUptodate(pg));  in jffs2_write_end()
275 		unlock_page(pg);  in jffs2_write_end()
276 		put_page(pg);  in jffs2_write_end()
290 	kmap(pg);  in jffs2_write_end()
292 	ret = jffs2_write_inode_range(c, f, ri, page_address(pg) + aligned_start,  in jffs2_write_end()
293 				      (pg->index << PAGE_SHIFT) + aligned_start,  in jffs2_write_end()
296 	kunmap(pg);  in jffs2_write_end()
300 		SetPageError(pg);  in jffs2_write_end()
323 		SetPageError(pg);  in jffs2_write_end()
324 		ClearPageUptodate(pg);  in jffs2_write_end()
329 	unlock_page(pg);  in jffs2_write_end()
330 	put_page(pg);  in jffs2_write_end()