114 static struct page *anon_pipe_prealloc_pop(struct anon_pipe_prealloc *prealloc)  in anon_pipe_prealloc_pop()  argument
116 	if (!prealloc->count)  in anon_pipe_prealloc_pop()
119 	prealloc->count--;  in anon_pipe_prealloc_pop()
121 	return prealloc->pages[prealloc->count];  in anon_pipe_prealloc_pop()
125 static bool anon_pipe_prealloc_push(struct anon_pipe_prealloc *prealloc,  in anon_pipe_prealloc_push()  argument
128 	if (prealloc->count >= PIPE_PREALLOC_MAX)  in anon_pipe_prealloc_push()
130 	prealloc->pages[prealloc->count++] = page;  in anon_pipe_prealloc_push()
149 	have = min_t(unsigned int, READ_ONCE(pipe->prealloc.count), want);  in anon_pipe_prefill_and_lock()
166 	while (n && anon_pipe_prealloc_push(&pipe->prealloc, pages[n - 1]))  in anon_pipe_prefill_and_lock()
186 	while (pipe->prealloc.count > PIPE_PREALLOC_KEEP)  in anon_pipe_trim_and_unlock()
187 		excess[nexcess++] = anon_pipe_prealloc_pop(&pipe->prealloc);  in anon_pipe_trim_and_unlock()
199 	page = anon_pipe_prealloc_pop(&pipe->prealloc);  in anon_pipe_get_page()
211 	    anon_pipe_prealloc_push(&pipe->prealloc, page))  in anon_pipe_put_page()
944 	for (i = 0; i < pipe->prealloc.count; i++)  in free_pipe_info()
945 		__free_page(pipe->prealloc.pages[i]);  in free_pipe_info()