26 			struct page *pg, void *fsdata);
30 static int jffs2_readpage (struct file *filp, struct page *pg);
80 static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)  in jffs2_do_readpage_nolock()  argument
88 		  __func__, inode->i_ino, pg->index << PAGE_SHIFT);  in jffs2_do_readpage_nolock()
90 	BUG_ON(!PageLocked(pg));  in jffs2_do_readpage_nolock()
92 	pg_buf = kmap(pg);  in jffs2_do_readpage_nolock()
95 	ret = jffs2_read_inode_range(c, f, pg_buf, pg->index << PAGE_SHIFT,  in jffs2_do_readpage_nolock()
99 		ClearPageUptodate(pg);  in jffs2_do_readpage_nolock()
100 		SetPageError(pg);  in jffs2_do_readpage_nolock()
102 		SetPageUptodate(pg);  in jffs2_do_readpage_nolock()
103 		ClearPageError(pg);  in jffs2_do_readpage_nolock()
106 	flush_dcache_page(pg);  in jffs2_do_readpage_nolock()
107 	kunmap(pg);  in jffs2_do_readpage_nolock()
113 int jffs2_do_readpage_unlock(void *data, struct page *pg)  in jffs2_do_readpage_unlock()  argument
115 	int ret = jffs2_do_readpage_nolock(data, pg);  in jffs2_do_readpage_unlock()
116 	unlock_page(pg);  in jffs2_do_readpage_unlock()
121 static int jffs2_readpage (struct file *filp, struct page *pg)  in jffs2_readpage()  argument
123 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(pg->mapping->host);  in jffs2_readpage()
127 	ret = jffs2_do_readpage_unlock(pg->mapping->host, pg);  in jffs2_readpage()
136 	struct page *pg;  in jffs2_write_begin()  local
216 	pg = grab_cache_page_write_begin(mapping, index, flags);  in jffs2_write_begin()
217 	if (!pg) {  in jffs2_write_begin()
221 	*pagep = pg;  in jffs2_write_begin()
228 	if (!PageUptodate(pg)) {  in jffs2_write_begin()
230 		ret = jffs2_do_readpage_nolock(inode, pg);  in jffs2_write_begin()
233 			unlock_page(pg);  in jffs2_write_begin()
234 			put_page(pg);  in jffs2_write_begin()
238 	jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);  in jffs2_write_begin()
248 			struct page *pg, void *fsdata)  in jffs2_write_end()  argument
264 		  __func__, inode->i_ino, pg->index << PAGE_SHIFT,  in jffs2_write_end()
265 		  start, end, pg->flags);  in jffs2_write_end()
271 	BUG_ON(!PageUptodate(pg));  in jffs2_write_end()
286 		unlock_page(pg);  in jffs2_write_end()
287 		put_page(pg);  in jffs2_write_end()
301 	kmap(pg);  in jffs2_write_end()
303 	ret = jffs2_write_inode_range(c, f, ri, page_address(pg) + aligned_start,  in jffs2_write_end()
304 				      (pg->index << PAGE_SHIFT) + aligned_start,  in jffs2_write_end()
307 	kunmap(pg);  in jffs2_write_end()
311 		SetPageError(pg);  in jffs2_write_end()
334 		SetPageError(pg);  in jffs2_write_end()
335 		ClearPageUptodate(pg);  in jffs2_write_end()
340 	unlock_page(pg);  in jffs2_write_end()
341 	put_page(pg);  in jffs2_write_end()