21 static int afs_readpage(struct file *file, struct page *page);
22 static void afs_invalidatepage(struct page *page, unsigned int offset,
24 static int afs_releasepage(struct page *page, gfp_t gfp_flags);
25 static int afs_launder_page(struct page *page);
108 static void afs_file_readpage_read_complete(struct page *page,  in afs_file_readpage_read_complete()  argument
112 	_enter("%p,%p,%d", page, data, error);  in afs_file_readpage_read_complete()
117 		SetPageUptodate(page);  in afs_file_readpage_read_complete()
118 	unlock_page(page);  in afs_file_readpage_read_complete()
125 int afs_page_filler(void *data, struct page *page)  in afs_page_filler()  argument
127 	struct inode *inode = page->mapping->host;  in afs_page_filler()
134 	_enter("{%x},{%lu},{%lu}", key_serial(key), inode->i_ino, page->index);  in afs_page_filler()
136 	BUG_ON(!PageLocked(page));  in afs_page_filler()
145 					 page,  in afs_page_filler()
167 		offset = page->index << PAGE_CACHE_SHIFT;  in afs_page_filler()
172 		ret = afs_vnode_fetch_data(vnode, key, offset, len, page);  in afs_page_filler()
182 			fscache_uncache_page(vnode->cache, page);  in afs_page_filler()
184 			BUG_ON(PageFsCache(page));  in afs_page_filler()
188 		SetPageUptodate(page);  in afs_page_filler()
192 		if (PageFsCache(page) &&  in afs_page_filler()
193 		    fscache_write_page(vnode->cache, page, GFP_KERNEL) != 0) {  in afs_page_filler()
194 			fscache_uncache_page(vnode->cache, page);  in afs_page_filler()
195 			BUG_ON(PageFsCache(page));  in afs_page_filler()
198 		unlock_page(page);  in afs_page_filler()
205 	SetPageError(page);  in afs_page_filler()
206 	unlock_page(page);  in afs_page_filler()
215 static int afs_readpage(struct file *file, struct page *page)  in afs_readpage()  argument
223 		ret = afs_page_filler(key, page);  in afs_readpage()
225 		struct inode *inode = page->mapping->host;  in afs_readpage()
230 			ret = afs_page_filler(key, page);  in afs_readpage()
300 static int afs_launder_page(struct page *page)  in afs_launder_page()  argument
302 	_enter("{%lu}", page->index);  in afs_launder_page()
312 static void afs_invalidatepage(struct page *page, unsigned int offset,  in afs_invalidatepage()  argument
315 	struct afs_writeback *wb = (struct afs_writeback *) page_private(page);  in afs_invalidatepage()
317 	_enter("{%lu},%u,%u", page->index, offset, length);  in afs_invalidatepage()
319 	BUG_ON(!PageLocked(page));  in afs_invalidatepage()
324 		if (PageFsCache(page)) {  in afs_invalidatepage()
325 			struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);  in afs_invalidatepage()
326 			fscache_wait_on_page_write(vnode->cache, page);  in afs_invalidatepage()
327 			fscache_uncache_page(vnode->cache, page);  in afs_invalidatepage()
331 		if (PagePrivate(page)) {  in afs_invalidatepage()
332 			if (wb && !PageWriteback(page)) {  in afs_invalidatepage()
333 				set_page_private(page, 0);  in afs_invalidatepage()
337 			if (!page_private(page))  in afs_invalidatepage()
338 				ClearPagePrivate(page);  in afs_invalidatepage()
349 static int afs_releasepage(struct page *page, gfp_t gfp_flags)  in afs_releasepage()  argument
351 	struct afs_writeback *wb = (struct afs_writeback *) page_private(page);  in afs_releasepage()
352 	struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);  in afs_releasepage()
355 	       vnode->fid.vid, vnode->fid.vnode, page->index, page->flags,  in afs_releasepage()
361 	if (!fscache_maybe_release_page(vnode->cache, page, gfp_flags)) {  in afs_releasepage()
367 	if (PagePrivate(page)) {  in afs_releasepage()
369 			set_page_private(page, 0);  in afs_releasepage()
372 		ClearPagePrivate(page);  in afs_releasepage()