change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/fs/jbd2/recovery.c
..
..
@@ -35,7 +35,6 @@
35
35
 	int		nr_revoke_hits;
36
36
 };
37
37
 
38
-enum passtype {PASS_SCAN, PASS_REVOKE, PASS_REPLAY};
39
38
 static int do_one_pass(journal_t *journal,
40
39
 				struct recovery_info *info, enum passtype pass);
41
40
 static int scan_revoke_records(journal_t *, struct buffer_head *,
..
..
@@ -75,8 +74,8 @@
75
74
 
76
75
 	/* Do up to 128K of readahead */
77
76
 	max = start + (128 * 1024 / journal->j_blocksize);
78
-	if (max > journal->j_maxlen)
79
-		max = journal->j_maxlen;
77
+	if (max > journal->j_total_len)
78
+		max = journal->j_total_len;
80
79
 
81
80
 	/* Do the readahead itself.  We'll submit MAXBUF buffer_heads at
82
81
 	 * a time to the block device IO layer. */
..
..
@@ -135,7 +134,7 @@
135
134
 
136
135
 	*bhp = NULL;
137
136
 
138
-	if (offset >= journal->j_maxlen) {
137
+	if (offset >= journal->j_total_len) {
139
138
 		printk(KERN_ERR "JBD2: corrupted journal superblock\n");
140
139
 		return -EFSCORRUPTED;
141
140
 	}
..
..
@@ -225,9 +224,50 @@
225
224
 /* Make sure we wrap around the log correctly! */
226
225
 #define wrap(journal, var)						\
227
226
 do {									\
228
-	if (var >= (journal)->j_last)					\
229
-		var -= ((journal)->j_last - (journal)->j_first);	\
227
+	unsigned long _wrap_last =					\
228
+		jbd2_has_feature_fast_commit(journal) ?			\
229
+			(journal)->j_fc_last : (journal)->j_last;	\
230
+									\
231
+	if (var >= _wrap_last)						\
232
+		var -= (_wrap_last - (journal)->j_first);		\
230
233
 } while (0)
234
+
235
+static int fc_do_one_pass(journal_t *journal,
236
+			  struct recovery_info *info, enum passtype pass)
237
+{
238
+	unsigned int expected_commit_id = info->end_transaction;
239
+	unsigned long next_fc_block;
240
+	struct buffer_head *bh;
241
+	int err = 0;
242
+
243
+	next_fc_block = journal->j_fc_first;
244
+	if (!journal->j_fc_replay_callback)
245
+		return 0;
246
+
247
+	while (next_fc_block <= journal->j_fc_last) {
248
+		jbd_debug(3, "Fast commit replay: next block %ld\n",
249
+			  next_fc_block);
250
+		err = jread(&bh, journal, next_fc_block);
251
+		if (err) {
252
+			jbd_debug(3, "Fast commit replay: read error\n");
253
+			break;
254
+		}
255
+
256
+		err = journal->j_fc_replay_callback(journal, bh, pass,
257
+					next_fc_block - journal->j_fc_first,
258
+					expected_commit_id);
259
+		brelse(bh);
260
+		next_fc_block++;
261
+		if (err < 0 || err == JBD2_FC_REPLAY_STOP)
262
+			break;
263
+		err = 0;
264
+	}
265
+
266
+	if (err)
267
+		jbd_debug(3, "Fast commit replay failed, err = %d\n", err);
268
+
269
+	return err;
270
+}
231
271
 
232
272
 /**
233
273
  * jbd2_journal_recover - recovers a on-disk journal
..
..
@@ -286,7 +326,7 @@
286
326
 		err = err2;
287
327
 	/* Make sure all replayed data is on permanent storage */
288
328
 	if (journal->j_flags & JBD2_BARRIER) {
289
-		err2 = blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
329
+		err2 = blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL);
290
330
 		if (!err)
291
331
 			err = err2;
292
332
 	}
..
..
@@ -428,6 +468,8 @@
428
468
 	__u32			crc32_sum = ~0; /* Transactional Checksums */
429
469
 	int			descr_csum_size = 0;
430
470
 	int			block_error = 0;
471
+	bool			need_check_commit_time = false;
472
+	__u64			last_trans_commit_time = 0, commit_time;
431
473
 
432
474
 	/*
433
475
 	 * First thing is to establish what we expect to find in the log
..
..
@@ -470,7 +512,9 @@
470
512
 				break;
471
513
 
472
514
 		jbd_debug(2, "Scanning for sequence ID %u at %lu/%lu\n",
473
-			  next_commit_ID, next_log_block, journal->j_last);
515
+			  next_commit_ID, next_log_block,
516
+			  jbd2_has_feature_fast_commit(journal) ?
517
+			  journal->j_fc_last : journal->j_last);
474
518
 
475
519
 		/* Skip over each chunk of the transaction looking
476
520
 		 * either the next descriptor block or the final commit
..
..
@@ -520,12 +564,21 @@
520
564
 			if (descr_csum_size > 0 &&
521
565
 			    !jbd2_descriptor_block_csum_verify(journal,
522
566
 							       bh->b_data)) {
523
-				printk(KERN_ERR "JBD2: Invalid checksum "
524
-				       "recovering block %lu in log\n",
525
-				       next_log_block);
526
-				err = -EFSBADCRC;
527
-				brelse(bh);
528
-				goto failed;
567
+				/*
568
+				 * PASS_SCAN can see stale blocks due to lazy
569
+				 * journal init. Don't error out on those yet.
570
+				 */
571
+				if (pass != PASS_SCAN) {
572
+					pr_err("JBD2: Invalid checksum recovering block %lu in log\n",
573
+					       next_log_block);
574
+					err = -EFSBADCRC;
575
+					brelse(bh);
576
+					goto failed;
577
+				}
578
+				need_check_commit_time = true;
579
+				jbd_debug(1,
580
+					"invalid descriptor block found in %lu\n",
581
+					next_log_block);
529
582
 			}
530
583
 
531
584
 			/* If it is a valid descriptor block, replay it
..
..
@@ -535,6 +588,7 @@
535
588
 			if (pass != PASS_REPLAY) {
536
589
 				if (pass == PASS_SCAN &&
537
590
 				    jbd2_has_feature_checksum(journal) &&
591
+				    !need_check_commit_time &&
538
592
 				    !info->end_transaction) {
539
593
 					if (calc_chksums(journal, bh,
540
594
 							&next_log_block,
..
..
@@ -683,20 +737,47 @@
683
737
 			 *	 mentioned conditions. Hence assume
684
738
 			 *	 "Interrupted Commit".)
685
739
 			 */
740
+			commit_time = be64_to_cpu(
741
+				((struct commit_header *)bh->b_data)->h_commit_sec);
742
+			/*
743
+			 * If need_check_commit_time is set, it means we are in
744
+			 * PASS_SCAN and csum verify failed before. If
745
+			 * commit_time is increasing, it's the same journal,
746
+			 * otherwise it is stale journal block, just end this
747
+			 * recovery.
748
+			 */
749
+			if (need_check_commit_time) {
750
+				if (commit_time >= last_trans_commit_time) {
751
+					pr_err("JBD2: Invalid checksum found in transaction %u\n",
752
+					       next_commit_ID);
753
+					err = -EFSBADCRC;
754
+					brelse(bh);
755
+					goto failed;
756
+				}
757
+			ignore_crc_mismatch:
758
+				/*
759
+				 * It likely does not belong to same journal,
760
+				 * just end this recovery with success.
761
+				 */
762
+				jbd_debug(1, "JBD2: Invalid checksum ignored in transaction %u, likely stale data\n",
763
+					  next_commit_ID);
764
+				err = 0;
765
+				brelse(bh);
766
+				goto done;
767
+			}
686
768
 
687
-			/* Found an expected commit block: if checksums
688
-			 * are present verify them in PASS_SCAN; else not
769
+			/*
770
+			 * Found an expected commit block: if checksums
771
+			 * are present, verify them in PASS_SCAN; else not
689
772
 			 * much to do other than move on to the next sequence
690
-			 * number. */
773
+			 * number.
774
+			 */
691
775
 			if (pass == PASS_SCAN &&
692
776
 			    jbd2_has_feature_checksum(journal)) {
693
-				int chksum_err, chksum_seen;
694
777
 				struct commit_header *cbh =
695
778
 					(struct commit_header *)bh->b_data;
696
779
 				unsigned found_chksum =
697
780
 					be32_to_cpu(cbh->h_chksum[0]);
698
-
699
-				chksum_err = chksum_seen = 0;
700
781
 
701
782
 				if (info->end_transaction) {
702
783
 					journal->j_failed_commit =
..
..
@@ -705,42 +786,25 @@
705
786
 					break;
706
787
 				}
707
788
 
708
-				if (crc32_sum == found_chksum &&
709
-				    cbh->h_chksum_type == JBD2_CRC32_CHKSUM &&
710
-				    cbh->h_chksum_size ==
711
-						JBD2_CRC32_CHKSUM_SIZE)
712
-				       chksum_seen = 1;
713
-				else if (!(cbh->h_chksum_type == 0 &&
714
-					     cbh->h_chksum_size == 0 &&
715
-					     found_chksum == 0 &&
716
-					     !chksum_seen))
717
-				/*
718
-				 * If fs is mounted using an old kernel and then
719
-				 * kernel with journal_chksum is used then we
720
-				 * get a situation where the journal flag has
721
-				 * checksum flag set but checksums are not
722
-				 * present i.e chksum = 0, in the individual
723
-				 * commit blocks.
724
-				 * Hence to avoid checksum failures, in this
725
-				 * situation, this extra check is added.
726
-				 */
727
-						chksum_err = 1;
789
+				/* Neither checksum match nor unused? */
790
+				if (!((crc32_sum == found_chksum &&
791
+				       cbh->h_chksum_type ==
792
+						JBD2_CRC32_CHKSUM &&
793
+				       cbh->h_chksum_size ==
794
+						JBD2_CRC32_CHKSUM_SIZE) ||
795
+				      (cbh->h_chksum_type == 0 &&
796
+				       cbh->h_chksum_size == 0 &&
797
+				       found_chksum == 0)))
798
+					goto chksum_error;
728
799
 
729
-				if (chksum_err) {
730
-					info->end_transaction = next_commit_ID;
731
-
732
-					if (!jbd2_has_feature_async_commit(journal)) {
733
-						journal->j_failed_commit =
734
-							next_commit_ID;
735
-						brelse(bh);
736
-						break;
737
-					}
738
-				}
739
800
 				crc32_sum = ~0;
740
801
 			}
741
802
 			if (pass == PASS_SCAN &&
742
803
 			    !jbd2_commit_block_csum_verify(journal,
743
804
 							   bh->b_data)) {
805
+			chksum_error:
806
+				if (commit_time < last_trans_commit_time)
807
+					goto ignore_crc_mismatch;
744
808
 				info->end_transaction = next_commit_ID;
745
809
 
746
810
 				if (!jbd2_has_feature_async_commit(journal)) {
..
..
@@ -750,11 +814,24 @@
750
814
 					break;
751
815
 				}
752
816
 			}
817
+			if (pass == PASS_SCAN)
818
+				last_trans_commit_time = commit_time;
753
819
 			brelse(bh);
754
820
 			next_commit_ID++;
755
821
 			continue;
756
822
 
757
823
 		case JBD2_REVOKE_BLOCK:
824
+			/*
825
+			 * Check revoke block crc in pass_scan, if csum verify
826
+			 * failed, check commit block time later.
827
+			 */
828
+			if (pass == PASS_SCAN &&
829
+			    !jbd2_descriptor_block_csum_verify(journal,
830
+							       bh->b_data)) {
831
+				jbd_debug(1, "JBD2: invalid revoke block found in %lu\n",
832
+					  next_log_block);
833
+				need_check_commit_time = true;
834
+			}
758
835
 			/* If we aren't in the REVOKE pass, then we can
759
836
 			 * just skip over this block. */
760
837
 			if (pass != PASS_REVOKE) {
..
..
@@ -799,6 +876,13 @@
799
876
 				success = -EIO;
800
877
 		}
801
878
 	}
879
+
880
+	if (jbd2_has_feature_fast_commit(journal) &&  pass != PASS_REVOKE) {
881
+		err = fc_do_one_pass(journal, info, pass);
882
+		if (err)
883
+			success = err;
884
+	}
885
+
802
886
 	if (block_error && success == 0)
803
887
 		success = -EIO;
804
888
 	return success;
..
..
@@ -821,9 +905,6 @@
821
905
 	header = (jbd2_journal_revoke_header_t *) bh->b_data;
822
906
 	offset = sizeof(jbd2_journal_revoke_header_t);
823
907
 	rcount = be32_to_cpu(header->r_count);
824
-
825
-	if (!jbd2_descriptor_block_csum_verify(journal, header))
826
-		return -EFSBADCRC;
827
908
 
828
909
 	if (jbd2_journal_has_csum_v2or3(journal))
829
910
 		csum_size = sizeof(struct jbd2_journal_block_tail);