26 			struct page *pg, void *fsdata);
30 static int jffs2_readpage (struct file *filp, struct page *pg);
82 static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)  in jffs2_do_readpage_nolock()  argument
90 		  __func__, inode->i_ino, pg->index << PAGE_CACHE_SHIFT);  in jffs2_do_readpage_nolock()
92 	BUG_ON(!PageLocked(pg));  in jffs2_do_readpage_nolock()
94 	pg_buf = kmap(pg);  in jffs2_do_readpage_nolock()
97 	ret = jffs2_read_inode_range(c, f, pg_buf, pg->index << PAGE_CACHE_SHIFT, PAGE_CACHE_SIZE);  in jffs2_do_readpage_nolock()
100 		ClearPageUptodate(pg);  in jffs2_do_readpage_nolock()
101 		SetPageError(pg);  in jffs2_do_readpage_nolock()
103 		SetPageUptodate(pg);  in jffs2_do_readpage_nolock()
104 		ClearPageError(pg);  in jffs2_do_readpage_nolock()
107 	flush_dcache_page(pg);  in jffs2_do_readpage_nolock()
108 	kunmap(pg);  in jffs2_do_readpage_nolock()
114 int jffs2_do_readpage_unlock(struct inode *inode, struct page *pg)  in jffs2_do_readpage_unlock()  argument
116 	int ret = jffs2_do_readpage_nolock(inode, pg);  in jffs2_do_readpage_unlock()
117 	unlock_page(pg);  in jffs2_do_readpage_unlock()
122 static int jffs2_readpage (struct file *filp, struct page *pg)  in jffs2_readpage()  argument
124 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(pg->mapping->host);  in jffs2_readpage()
128 	ret = jffs2_do_readpage_unlock(pg->mapping->host, pg);  in jffs2_readpage()
137 	struct page *pg;  in jffs2_write_begin()  local
144 	pg = grab_cache_page_write_begin(mapping, index, flags);  in jffs2_write_begin()
145 	if (!pg)  in jffs2_write_begin()
147 	*pagep = pg;  in jffs2_write_begin()
221 	if (!PageUptodate(pg)) {  in jffs2_write_begin()
223 		ret = jffs2_do_readpage_nolock(inode, pg);  in jffs2_write_begin()
228 	jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);  in jffs2_write_begin()
232 	unlock_page(pg);  in jffs2_write_begin()
233 	page_cache_release(pg);  in jffs2_write_begin()
239 			struct page *pg, void *fsdata)  in jffs2_write_end()  argument
255 		  __func__, inode->i_ino, pg->index << PAGE_CACHE_SHIFT,  in jffs2_write_end()
256 		  start, end, pg->flags);  in jffs2_write_end()
262 	BUG_ON(!PageUptodate(pg));  in jffs2_write_end()
277 		unlock_page(pg);  in jffs2_write_end()
278 		page_cache_release(pg);  in jffs2_write_end()
292 	kmap(pg);  in jffs2_write_end()
294 	ret = jffs2_write_inode_range(c, f, ri, page_address(pg) + aligned_start,  in jffs2_write_end()
295 				      (pg->index << PAGE_CACHE_SHIFT) + aligned_start,  in jffs2_write_end()
298 	kunmap(pg);  in jffs2_write_end()
302 		SetPageError(pg);  in jffs2_write_end()
325 		SetPageError(pg);  in jffs2_write_end()
326 		ClearPageUptodate(pg);  in jffs2_write_end()
331 	unlock_page(pg);  in jffs2_write_end()
332 	page_cache_release(pg);  in jffs2_write_end()