22 		struct z_erofs_deflate *strm;  in z_erofs_deflate_exit()  local
25 		strm = z_erofs_deflate_head;  in z_erofs_deflate_exit()
26 		if (!strm) {  in z_erofs_deflate_exit()
33 		while (strm) {  in z_erofs_deflate_exit()
34 			struct z_erofs_deflate *n = strm->next;  in z_erofs_deflate_exit()
36 			vfree(strm->z.workspace);  in z_erofs_deflate_exit()
37 			kfree(strm);  in z_erofs_deflate_exit()
39 			strm = n;  in z_erofs_deflate_exit()
72 			struct z_erofs_deflate *strm;  in z_erofs_load_deflate_config()  local
74 			strm = kzalloc(sizeof(*strm), GFP_KERNEL);  in z_erofs_load_deflate_config()
75 			if (!strm)  in z_erofs_load_deflate_config()
78 			strm->z.workspace = vmalloc(zlib_inflate_workspacesize());  in z_erofs_load_deflate_config()
79 			if (!strm->z.workspace) {  in z_erofs_load_deflate_config()
80 				kfree(strm);  in z_erofs_load_deflate_config()
85 			strm->next = z_erofs_deflate_head;  in z_erofs_load_deflate_config()
86 			z_erofs_deflate_head = strm;  in z_erofs_load_deflate_config()
111 	struct z_erofs_deflate *strm;  in z_erofs_deflate_decompress()  local
126 	strm = z_erofs_deflate_head;  in z_erofs_deflate_decompress()
127 	if (!strm) {  in z_erofs_deflate_decompress()
132 	z_erofs_deflate_head = strm->next;  in z_erofs_deflate_decompress()
136 	zerr = zlib_inflateInit2(&strm->z, -MAX_WBITS);  in z_erofs_deflate_decompress()
143 	strm->z.avail_in = min(rq->inputsize, PAGE_SIZE - rq->pageofs_in);  in z_erofs_deflate_decompress()
144 	rq->inputsize -= strm->z.avail_in;  in z_erofs_deflate_decompress()
145 	strm->z.next_in = dctx.kin + rq->pageofs_in;  in z_erofs_deflate_decompress()
146 	strm->z.avail_out = 0;  in z_erofs_deflate_decompress()
147 	dctx.bounce = strm->bounce;  in z_erofs_deflate_decompress()
150 		dctx.avail_out = strm->z.avail_out;  in z_erofs_deflate_decompress()
151 		dctx.inbuf_sz = strm->z.avail_in;  in z_erofs_deflate_decompress()
153 					(void **)&strm->z.next_out,  in z_erofs_deflate_decompress()
154 					(void **)&strm->z.next_in, pgpl);  in z_erofs_deflate_decompress()
157 		strm->z.avail_out = dctx.avail_out;  in z_erofs_deflate_decompress()
158 		strm->z.avail_in = dctx.inbuf_sz;  in z_erofs_deflate_decompress()
160 		zerr = zlib_inflate(&strm->z, Z_SYNC_FLUSH);  in z_erofs_deflate_decompress()
161 		if (zerr != Z_OK || !(rq->outputsize + strm->z.avail_out)) {  in z_erofs_deflate_decompress()
172 	if (zlib_inflateEnd(&strm->z) != Z_OK && !err)  in z_erofs_deflate_decompress()
180 	strm->next = z_erofs_deflate_head;  in z_erofs_deflate_decompress()
181 	z_erofs_deflate_head = strm;  in z_erofs_deflate_decompress()