fs/jffs2/wbuf.c

60 	/* Look to see if the inode in question is pending in the wbuf */
260 		       c->wbuf, c->wbuf_pagesize, 0);
272 /* Recover from failure to write wbuf. Recover the nodes up to the
273  * wbuf, not the one which we were starting to try to write. */
297 	   node which ends before the wbuf starts, or which is obsolete. */
332 	dbg_noderef("wbuf recover %08x-%08x (%d bytes in %d nodes)\n",
342 			pr_crit("Malloc failure in wbuf recovery. Data loss ensues.\n");
357 			pr_crit("Old data are already lost in wbuf recovery. Data loss ensues.\n");
375 			/* It wasn't. Go on and try to recover nodes complete in the wbuf */
377 			dbg_noderef("wbuf now recover %08x-%08x (%d bytes in %d nodes)\n",
381 			/* Read succeeded. Copy the remaining data from the wbuf */
382 			memcpy(buf + (c->wbuf_ofs - start), c->wbuf, end - c->wbuf_ofs);
386 	   Either 'buf' contains the data, or we find it in the wbuf */
391 		pr_warn("Failed to allocate space for wbuf recovery. Data loss ensues.\n");
401 		pr_warn("Failed to allocate node refs for wbuf recovery. Data loss ensues.\n");
410 		   that this is just because the wbuf itself is completely
414 		unsigned char *rewrite_buf = buf?:c->wbuf;
417 		jffs2_dbg(1, "Write 0x%x bytes at 0x%08x in wbuf recover\n",
434 			pr_crit("Recovery of wbuf failed due to a second write error\n");
442 		pr_notice("Recovery of wbuf succeeded to %08x\n", ofs);
446 		memmove(c->wbuf, rewrite_buf + towrite, c->wbuf_len);
451 			memcpy(c->wbuf, buf, end-start);
453 			memmove(c->wbuf, c->wbuf + (start - c->wbuf_ofs), end - start);
518 								      (void *)(buf?:c->wbuf) + (ref_offset(raw) - start));
566 	jffs2_dbg(1, "wbuf recovery completed OK. wbuf_ofs 0x%08x, len 0x%x\n",
596 	if (!c->wbuf_len)	/* already checked c->wbuf above */
614 		memset(c->wbuf + c->wbuf_len, 0, c->wbuf_pagesize - c->wbuf_len);
617 			struct jffs2_unknown_node *padnode = (void *)(c->wbuf + c->wbuf_len);
639 				&retlen, c->wbuf);
649 	} else if ((ret = jffs2_verify_write(c, c->wbuf, c->wbuf_ofs))) {
668 			pr_crit("jffs2_flush_wbuf(): Accounting error. wbuf at 0x%08x has 0x%03x bytes, 0x%03x left.\n",
691 	memset(c->wbuf,0xff,c->wbuf_pagesize);
710 	if (!c->wbuf)
715 		jffs2_dbg(1, "Ino #%d not pending in wbuf. Returning\n", ino);
729 		/* retry flushing wbuf in case jffs2_wbuf_recover
730 		   left some data in the wbuf */
747 			/* retry flushing wbuf in case jffs2_wbuf_recover
748 			   left some data in the wbuf */
768 	if (!c->wbuf)
773 	/* retry - maybe wbuf recover left some data in wbuf. */
789 	memcpy(c->wbuf + c->wbuf_len, buf, len);
813 		memset(c->wbuf,0xff,c->wbuf_pagesize);
826 			jffs2_dbg(1, "%s(): to 0x%lx causes flush of wbuf at 0x%08x\n",
842 			pr_crit("wbuf was previously %08x-%08x\n",
900 	 * If there's a remainder in the wbuf and it's a non-GC write,
901 	 * remember that the wbuf affects this ino
920 	 * At this point we have no problem, c->wbuf is empty. However
1010 		memcpy(buf+orbf,c->wbuf+owbf,lwbf);
1207 	c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
1208 	if (!c->wbuf)
1213 		kfree(c->wbuf);
1221 		kfree(c->wbuf);
1233 	kfree(c->wbuf);
1268 	c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
1269 	if (!c->wbuf)
1275 		kfree(c->wbuf);
1290 	kfree(c->wbuf);
1305 	c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
1306 	if (!c->wbuf)
1312 		kfree(c->wbuf);
1323 	kfree(c->wbuf);
1338 	c->wbuf = kmalloc(c->wbuf_pagesize, GFP_KERNEL);
1339 	if (!c->wbuf)
1349 	kfree(c->wbuf);