27 	int (*decompress)(struct z_erofs_decompress_req *rq, u8 *out);
44 		struct page *const page = rq->out[i];  in z_erofs_lz4_prepare_destpages()
54 			availables[top++] = rq->out[i - LZ4_MAX_DISTANCE_PAGES];  in z_erofs_lz4_prepare_destpages()
81 		rq->out[i] = victim;  in z_erofs_lz4_prepare_destpages()
113 static int z_erofs_lz4_decompress(struct z_erofs_decompress_req *rq, u8 *out)  in z_erofs_lz4_decompress()  argument
151 		    rq->out[nr - 1] != rq->in[0] ||  in z_erofs_lz4_decompress()
160 	ret = LZ4_decompress_safe_partial(src + inputmargin, out,  in z_erofs_lz4_decompress()
170 			       16, 1, out, rq->outputsize, true);  in z_erofs_lz4_decompress()
192 static void copy_from_pcpubuf(struct page **out, const char *dst,  in copy_from_pcpubuf()  argument
201 		struct page *const page = *out++;  in copy_from_pcpubuf()
230 		DBG_BUGON(!*rq->out);  in z_erofs_decompress_generic()
231 		dst = kmap_atomic(*rq->out);  in z_erofs_decompress_generic()
249 			copy_from_pcpubuf(rq->out, dst, rq->pageofs_out,  in z_erofs_decompress_generic()
260 		dst = page_address(*rq->out);  in z_erofs_decompress_generic()
267 		dst = vm_map_ram(rq->out, nrpages_out, -1, PAGE_KERNEL);  in z_erofs_decompress_generic()
303 	if (rq->out[0] == *rq->in) {  in z_erofs_shifted_transform()
309 	if (!rq->out[0]) {  in z_erofs_shifted_transform()
312 		dst = kmap_atomic(rq->out[0]);  in z_erofs_shifted_transform()
316 	if (rq->out[1] == *rq->in) {  in z_erofs_shifted_transform()
321 		DBG_BUGON(!rq->out[1]);  in z_erofs_shifted_transform()
322 		dst = kmap_atomic(rq->out[1]);  in z_erofs_shifted_transform()