23 bool __fscache_check_page_write(struct fscache_cookie *cookie, struct page *page)  in __fscache_check_page_write()  argument
28 	val = radix_tree_lookup(&cookie->stores, page->index);  in __fscache_check_page_write()
38 void __fscache_wait_on_page_write(struct fscache_cookie *cookie, struct page *page)  in __fscache_wait_on_page_write()  argument
40 	wait_queue_head_t *wq = bit_waitqueue(&cookie->flags, 0);  in __fscache_wait_on_page_write()
42 	wait_event(*wq, !__fscache_check_page_write(cookie, page));  in __fscache_wait_on_page_write()
51 bool release_page_wait_timeout(struct fscache_cookie *cookie, struct page *page)  in release_page_wait_timeout()  argument
53 	wait_queue_head_t *wq = bit_waitqueue(&cookie->flags, 0);  in release_page_wait_timeout()
55 	return wait_event_timeout(*wq, !__fscache_check_page_write(cookie, page),  in release_page_wait_timeout()
63 bool __fscache_maybe_release_page(struct fscache_cookie *cookie,  in __fscache_maybe_release_page()  argument
70 	_enter("%p,%p,%x", cookie, page, gfp);  in __fscache_maybe_release_page()
74 	val = radix_tree_lookup(&cookie->stores, page->index);  in __fscache_maybe_release_page()
78 		__fscache_uncache_page(cookie, page);  in __fscache_maybe_release_page()
84 	if (radix_tree_tag_get(&cookie->stores, page->index,  in __fscache_maybe_release_page()
92 	spin_lock(&cookie->stores_lock);  in __fscache_maybe_release_page()
95 	if (radix_tree_tag_get(&cookie->stores, page->index,  in __fscache_maybe_release_page()
99 		spin_unlock(&cookie->stores_lock);  in __fscache_maybe_release_page()
103 	xpage = radix_tree_delete(&cookie->stores, page->index);  in __fscache_maybe_release_page()
104 	spin_unlock(&cookie->stores_lock);  in __fscache_maybe_release_page()
114 	wake_up_bit(&cookie->flags, 0);  in __fscache_maybe_release_page()
117 	__fscache_uncache_page(cookie, page);  in __fscache_maybe_release_page()
131 	if (!release_page_wait_timeout(cookie, page))  in __fscache_maybe_release_page()
146 	struct fscache_cookie *cookie;  in fscache_end_page_write()  local
150 	cookie = object->cookie;  in fscache_end_page_write()
151 	if (cookie) {  in fscache_end_page_write()
154 		spin_lock(&cookie->stores_lock);  in fscache_end_page_write()
155 		radix_tree_tag_clear(&cookie->stores, page->index,  in fscache_end_page_write()
157 		if (!radix_tree_tag_get(&cookie->stores, page->index,  in fscache_end_page_write()
160 			xpage = radix_tree_delete(&cookie->stores, page->index);  in fscache_end_page_write()
162 		spin_unlock(&cookie->stores_lock);  in fscache_end_page_write()
163 		wake_up_bit(&cookie->flags, 0);  in fscache_end_page_write()
197 int __fscache_attr_changed(struct fscache_cookie *cookie)  in __fscache_attr_changed()  argument
203 	_enter("%p", cookie);  in __fscache_attr_changed()
205 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);  in __fscache_attr_changed()
221 	spin_lock(&cookie->lock);  in __fscache_attr_changed()
223 	if (!fscache_cookie_enabled(cookie) ||  in __fscache_attr_changed()
224 	    hlist_empty(&cookie->backing_objects))  in __fscache_attr_changed()
226 	object = hlist_entry(cookie->backing_objects.first,  in __fscache_attr_changed()
229 	__fscache_use_cookie(cookie);  in __fscache_attr_changed()
232 	spin_unlock(&cookie->lock);  in __fscache_attr_changed()
239 	wake_cookie = __fscache_unuse_cookie(cookie);  in __fscache_attr_changed()
241 	spin_unlock(&cookie->lock);  in __fscache_attr_changed()
244 		__fscache_wake_unused_cookie(cookie);  in __fscache_attr_changed()
265 		fscache_put_context(op->op.object->cookie, op->context);  in fscache_release_retrieval_op()
274 	struct fscache_cookie *cookie,  in fscache_alloc_retrieval()  argument
303 int fscache_wait_for_deferred_lookup(struct fscache_cookie *cookie)  in fscache_wait_for_deferred_lookup()  argument
309 	if (!test_bit(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags)) {  in fscache_wait_for_deferred_lookup()
317 	if (wait_on_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP,  in fscache_wait_for_deferred_lookup()
324 	ASSERT(!test_bit(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags));  in fscache_wait_for_deferred_lookup()
399 int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,  in __fscache_read_or_alloc_page()  argument
410 	_enter("%p,%p,,,", cookie, page);  in __fscache_read_or_alloc_page()
414 	if (hlist_empty(&cookie->backing_objects))  in __fscache_read_or_alloc_page()
417 	if (test_bit(FSCACHE_COOKIE_INVALIDATING, &cookie->flags)) {  in __fscache_read_or_alloc_page()
422 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);  in __fscache_read_or_alloc_page()
425 	if (fscache_wait_for_deferred_lookup(cookie) < 0)  in __fscache_read_or_alloc_page()
428 	op = fscache_alloc_retrieval(cookie, page->mapping,  in __fscache_read_or_alloc_page()
436 	spin_lock(&cookie->lock);  in __fscache_read_or_alloc_page()
438 	if (!fscache_cookie_enabled(cookie) ||  in __fscache_read_or_alloc_page()
439 	    hlist_empty(&cookie->backing_objects))  in __fscache_read_or_alloc_page()
441 	object = hlist_entry(cookie->backing_objects.first,  in __fscache_read_or_alloc_page()
446 	__fscache_use_cookie(cookie);  in __fscache_read_or_alloc_page()
452 	spin_unlock(&cookie->lock);  in __fscache_read_or_alloc_page()
458 	fscache_get_context(object->cookie, op->context);  in __fscache_read_or_alloc_page()
471 	if (test_bit(FSCACHE_COOKIE_NO_DATA_YET, &object->cookie->flags)) {  in __fscache_read_or_alloc_page()
501 	wake_cookie = __fscache_unuse_cookie(cookie);  in __fscache_read_or_alloc_page()
503 	spin_unlock(&cookie->lock);  in __fscache_read_or_alloc_page()
505 		__fscache_wake_unused_cookie(cookie);  in __fscache_read_or_alloc_page()
532 int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,  in __fscache_read_or_alloc_pages()  argument
545 	_enter("%p,,%d,,,", cookie, *nr_pages);  in __fscache_read_or_alloc_pages()
549 	if (hlist_empty(&cookie->backing_objects))  in __fscache_read_or_alloc_pages()
552 	if (test_bit(FSCACHE_COOKIE_INVALIDATING, &cookie->flags)) {  in __fscache_read_or_alloc_pages()
557 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);  in __fscache_read_or_alloc_pages()
561 	if (fscache_wait_for_deferred_lookup(cookie) < 0)  in __fscache_read_or_alloc_pages()
564 	op = fscache_alloc_retrieval(cookie, mapping, end_io_func, context);  in __fscache_read_or_alloc_pages()
569 	spin_lock(&cookie->lock);  in __fscache_read_or_alloc_pages()
571 	if (!fscache_cookie_enabled(cookie) ||  in __fscache_read_or_alloc_pages()
572 	    hlist_empty(&cookie->backing_objects))  in __fscache_read_or_alloc_pages()
574 	object = hlist_entry(cookie->backing_objects.first,  in __fscache_read_or_alloc_pages()
577 	__fscache_use_cookie(cookie);  in __fscache_read_or_alloc_pages()
583 	spin_unlock(&cookie->lock);  in __fscache_read_or_alloc_pages()
589 	fscache_get_context(object->cookie, op->context);  in __fscache_read_or_alloc_pages()
602 	if (test_bit(FSCACHE_COOKIE_NO_DATA_YET, &object->cookie->flags)) {  in __fscache_read_or_alloc_pages()
632 	wake_cookie = __fscache_unuse_cookie(cookie);  in __fscache_read_or_alloc_pages()
634 	spin_unlock(&cookie->lock);  in __fscache_read_or_alloc_pages()
637 		__fscache_wake_unused_cookie(cookie);  in __fscache_read_or_alloc_pages()
653 int __fscache_alloc_page(struct fscache_cookie *cookie,  in __fscache_alloc_page()  argument
662 	_enter("%p,%p,,,", cookie, page);  in __fscache_alloc_page()
666 	if (hlist_empty(&cookie->backing_objects))  in __fscache_alloc_page()
669 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);  in __fscache_alloc_page()
672 	if (test_bit(FSCACHE_COOKIE_INVALIDATING, &cookie->flags)) {  in __fscache_alloc_page()
677 	if (fscache_wait_for_deferred_lookup(cookie) < 0)  in __fscache_alloc_page()
680 	op = fscache_alloc_retrieval(cookie, page->mapping, NULL, NULL);  in __fscache_alloc_page()
685 	spin_lock(&cookie->lock);  in __fscache_alloc_page()
687 	if (!fscache_cookie_enabled(cookie) ||  in __fscache_alloc_page()
688 	    hlist_empty(&cookie->backing_objects))  in __fscache_alloc_page()
690 	object = hlist_entry(cookie->backing_objects.first,  in __fscache_alloc_page()
693 	__fscache_use_cookie(cookie);  in __fscache_alloc_page()
696 	spin_unlock(&cookie->lock);  in __fscache_alloc_page()
726 	wake_cookie = __fscache_unuse_cookie(cookie);  in __fscache_alloc_page()
728 	spin_unlock(&cookie->lock);  in __fscache_alloc_page()
731 		__fscache_wake_unused_cookie(cookie);  in __fscache_alloc_page()
743 void __fscache_readpages_cancel(struct fscache_cookie *cookie,  in __fscache_readpages_cancel()  argument
750 			__fscache_uncache_page(cookie, page);  in __fscache_readpages_cancel()
771 	struct fscache_cookie *cookie;  in fscache_write_op()  local
780 	cookie = object->cookie;  in fscache_write_op()
792 	if (!cookie) {  in fscache_write_op()
807 	spin_lock(&cookie->stores_lock);  in fscache_write_op()
813 	n = radix_tree_gang_lookup_tag(&cookie->stores, results, 0, 1,  in fscache_write_op()
824 	radix_tree_tag_set(&cookie->stores, page->index,  in fscache_write_op()
826 	radix_tree_tag_clear(&cookie->stores, page->index,  in fscache_write_op()
829 	spin_unlock(&cookie->stores_lock);  in fscache_write_op()
851 	spin_unlock(&cookie->stores_lock);  in fscache_write_op()
861 void fscache_invalidate_writes(struct fscache_cookie *cookie)  in fscache_invalidate_writes()  argument
870 		spin_lock(&cookie->stores_lock);  in fscache_invalidate_writes()
871 		n = radix_tree_gang_lookup_tag(&cookie->stores, results, 0,  in fscache_invalidate_writes()
875 			spin_unlock(&cookie->stores_lock);  in fscache_invalidate_writes()
881 			radix_tree_delete(&cookie->stores, page->index);  in fscache_invalidate_writes()
884 		spin_unlock(&cookie->stores_lock);  in fscache_invalidate_writes()
922 int __fscache_write_page(struct fscache_cookie *cookie,  in __fscache_write_page()  argument
931 	_enter("%p,%x,", cookie, (u32) page->flags);  in __fscache_write_page()
933 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);  in __fscache_write_page()
938 	if (test_bit(FSCACHE_COOKIE_INVALIDATING, &cookie->flags)) {  in __fscache_write_page()
958 	spin_lock(&cookie->lock);  in __fscache_write_page()
960 	if (!fscache_cookie_enabled(cookie) ||  in __fscache_write_page()
961 	    hlist_empty(&cookie->backing_objects))  in __fscache_write_page()
963 	object = hlist_entry(cookie->backing_objects.first,  in __fscache_write_page()
971 	spin_lock(&cookie->stores_lock);  in __fscache_write_page()
975 	ret = radix_tree_insert(&cookie->stores, page->index, page);  in __fscache_write_page()
983 	radix_tree_tag_set(&cookie->stores, page->index,  in __fscache_write_page()
992 	spin_unlock(&cookie->stores_lock);  in __fscache_write_page()
998 	__fscache_use_cookie(cookie);  in __fscache_write_page()
1002 	spin_unlock(&cookie->lock);  in __fscache_write_page()
1015 	spin_unlock(&cookie->stores_lock);  in __fscache_write_page()
1017 	spin_unlock(&cookie->lock);  in __fscache_write_page()
1025 	spin_lock(&cookie->stores_lock);  in __fscache_write_page()
1026 	radix_tree_delete(&cookie->stores, page->index);  in __fscache_write_page()
1027 	spin_unlock(&cookie->stores_lock);  in __fscache_write_page()
1028 	wake_cookie = __fscache_unuse_cookie(cookie);  in __fscache_write_page()
1034 	spin_unlock(&cookie->stores_lock);  in __fscache_write_page()
1037 	spin_unlock(&cookie->lock);  in __fscache_write_page()
1041 		__fscache_wake_unused_cookie(cookie);  in __fscache_write_page()
1058 void __fscache_uncache_page(struct fscache_cookie *cookie, struct page *page)  in __fscache_uncache_page()  argument
1064 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);  in __fscache_uncache_page()
1074 	spin_lock(&cookie->lock);  in __fscache_uncache_page()
1076 	if (hlist_empty(&cookie->backing_objects)) {  in __fscache_uncache_page()
1081 	object = hlist_entry(cookie->backing_objects.first,  in __fscache_uncache_page()
1085 	clear_bit(FSCACHE_COOKIE_NO_DATA_YET, &cookie->flags);  in __fscache_uncache_page()
1099 	spin_unlock(&cookie->lock);  in __fscache_uncache_page()
1115 	struct fscache_cookie *cookie = op->op.object->cookie;  in fscache_mark_page_cached()  local
1127 				cookie->def->name, page->index);  in fscache_mark_page_cached()
1131 	if (cookie->def->mark_page_cached)  in fscache_mark_page_cached()
1132 		cookie->def->mark_page_cached(cookie->netfs_data,  in fscache_mark_page_cached()
1161 void __fscache_uncache_all_inode_pages(struct fscache_cookie *cookie,  in __fscache_uncache_all_inode_pages()  argument
1169 	_enter("%p,%p", cookie, inode);  in __fscache_uncache_all_inode_pages()
1185 				__fscache_wait_on_page_write(cookie, page);  in __fscache_uncache_all_inode_pages()
1186 				__fscache_uncache_page(cookie, page);  in __fscache_uncache_all_inode_pages()