fs/erofs/decompressor_lzma.c

25 		struct z_erofs_lzma *strm;
28 		strm = z_erofs_lzma_head;
29 		if (!strm) {
37 		while (strm) {
38 			struct z_erofs_lzma *n = strm->next;
40 			if (strm->state)
41 				xz_dec_microlzma_end(strm->state);
42 			kfree(strm);
44 			strm = n;
58 		struct z_erofs_lzma *strm = kzalloc(sizeof(*strm), GFP_KERNEL);
60 		if (!strm) {
65 		strm->next = z_erofs_lzma_head;
66 		z_erofs_lzma_head = strm;
79 	struct z_erofs_lzma *strm, *head = NULL;
112 		strm = z_erofs_lzma_head;
113 		if (!strm) {
122 		for (last = strm; last->next; last = last->next)
125 		head = strm;
130 	for (strm = head; strm; strm = strm->next) {
131 		if (strm->state)
132 			xz_dec_microlzma_end(strm->state);
133 		strm->state = xz_dec_microlzma_alloc(XZ_PREALLOC, dict_size);
134 		if (!strm->state)
158 	struct z_erofs_lzma *strm;
176 	strm = z_erofs_lzma_head;
177 	if (!strm) {
182 	z_erofs_lzma_head = strm->next;
188 	xz_dec_microlzma_reset(strm->state, inlen, outlen,
191 	strm->buf.in = kin + rq->pageofs_in;
192 	strm->buf.in_pos = 0;
193 	strm->buf.in_size = min_t(u32, inlen, PAGE_SIZE - rq->pageofs_in);
194 	inlen -= strm->buf.in_size;
195 	strm->buf.out = NULL;
196 	strm->buf.out_pos = 0;
197 	strm->buf.out_size = 0;
202 		if (strm->buf.out_pos == strm->buf.out_size) {
203 			if (strm->buf.out) {
205 				strm->buf.out = NULL;
213 			strm->buf.out_pos = 0;
214 			strm->buf.out_size = min_t(u32, outlen,
216 			outlen -= strm->buf.out_size;
227 				strm->buf.out = kmap(rq->out[no]) + pageofs;
229 		} else if (strm->buf.in_pos == strm->buf.in_size) {
237 			strm->buf.in_pos = 0;
238 			strm->buf.in_size = min_t(u32, inlen, PAGE_SIZE);
239 			inlen -= strm->buf.in_size;
241 			strm->buf.in = kin;
252 			memcpy(strm->bounce, strm->buf.in, strm->buf.in_size);
253 			strm->buf.in = strm->bounce;
270 		xz_err = xz_dec_microlzma_run(strm->state, &strm->buf);
271 		DBG_BUGON(strm->buf.out_pos > strm->buf.out_size);
272 		DBG_BUGON(strm->buf.in_pos > strm->buf.in_size);
284 	if (no < nrpages_out && strm->buf.out)
290 	strm->next = z_erofs_lzma_head;
291 	z_erofs_lzma_head = strm;