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-rw-r--r--fs/nilfs2/cpfile.c94
1 files changed, 47 insertions, 47 deletions
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index c9b342c8b50..dab5c4c6dfa 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -218,11 +218,11 @@ int nilfs_cpfile_get_checkpoint(struct inode *cpfile,
218 kaddr, 1); 218 kaddr, 1);
219 mark_buffer_dirty(cp_bh); 219 mark_buffer_dirty(cp_bh);
220 220
221 kaddr = kmap_atomic(header_bh->b_page, KM_USER0); 221 kaddr = kmap_atomic(header_bh->b_page);
222 header = nilfs_cpfile_block_get_header(cpfile, header_bh, 222 header = nilfs_cpfile_block_get_header(cpfile, header_bh,
223 kaddr); 223 kaddr);
224 le64_add_cpu(&header->ch_ncheckpoints, 1); 224 le64_add_cpu(&header->ch_ncheckpoints, 1);
225 kunmap_atomic(kaddr, KM_USER0); 225 kunmap_atomic(kaddr);
226 mark_buffer_dirty(header_bh); 226 mark_buffer_dirty(header_bh);
227 nilfs_mdt_mark_dirty(cpfile); 227 nilfs_mdt_mark_dirty(cpfile);
228 } 228 }
@@ -313,7 +313,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
313 continue; 313 continue;
314 } 314 }
315 315
316 kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); 316 kaddr = kmap_atomic(cp_bh->b_page);
317 cp = nilfs_cpfile_block_get_checkpoint( 317 cp = nilfs_cpfile_block_get_checkpoint(
318 cpfile, cno, cp_bh, kaddr); 318 cpfile, cno, cp_bh, kaddr);
319 nicps = 0; 319 nicps = 0;
@@ -334,7 +334,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
334 cpfile, cp_bh, kaddr, nicps); 334 cpfile, cp_bh, kaddr, nicps);
335 if (count == 0) { 335 if (count == 0) {
336 /* make hole */ 336 /* make hole */
337 kunmap_atomic(kaddr, KM_USER0); 337 kunmap_atomic(kaddr);
338 brelse(cp_bh); 338 brelse(cp_bh);
339 ret = 339 ret =
340 nilfs_cpfile_delete_checkpoint_block( 340 nilfs_cpfile_delete_checkpoint_block(
@@ -349,18 +349,18 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
349 } 349 }
350 } 350 }
351 351
352 kunmap_atomic(kaddr, KM_USER0); 352 kunmap_atomic(kaddr);
353 brelse(cp_bh); 353 brelse(cp_bh);
354 } 354 }
355 355
356 if (tnicps > 0) { 356 if (tnicps > 0) {
357 kaddr = kmap_atomic(header_bh->b_page, KM_USER0); 357 kaddr = kmap_atomic(header_bh->b_page);
358 header = nilfs_cpfile_block_get_header(cpfile, header_bh, 358 header = nilfs_cpfile_block_get_header(cpfile, header_bh,
359 kaddr); 359 kaddr);
360 le64_add_cpu(&header->ch_ncheckpoints, -(u64)tnicps); 360 le64_add_cpu(&header->ch_ncheckpoints, -(u64)tnicps);
361 mark_buffer_dirty(header_bh); 361 mark_buffer_dirty(header_bh);
362 nilfs_mdt_mark_dirty(cpfile); 362 nilfs_mdt_mark_dirty(cpfile);
363 kunmap_atomic(kaddr, KM_USER0); 363 kunmap_atomic(kaddr);
364 } 364 }
365 365
366 brelse(header_bh); 366 brelse(header_bh);
@@ -408,7 +408,7 @@ static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop,
408 continue; /* skip hole */ 408 continue; /* skip hole */
409 } 409 }
410 410
411 kaddr = kmap_atomic(bh->b_page, KM_USER0); 411 kaddr = kmap_atomic(bh->b_page);
412 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr); 412 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
413 for (i = 0; i < ncps && n < nci; i++, cp = (void *)cp + cpsz) { 413 for (i = 0; i < ncps && n < nci; i++, cp = (void *)cp + cpsz) {
414 if (!nilfs_checkpoint_invalid(cp)) { 414 if (!nilfs_checkpoint_invalid(cp)) {
@@ -418,7 +418,7 @@ static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop,
418 n++; 418 n++;
419 } 419 }
420 } 420 }
421 kunmap_atomic(kaddr, KM_USER0); 421 kunmap_atomic(kaddr);
422 brelse(bh); 422 brelse(bh);
423 } 423 }
424 424
@@ -451,10 +451,10 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
451 ret = nilfs_cpfile_get_header_block(cpfile, &bh); 451 ret = nilfs_cpfile_get_header_block(cpfile, &bh);
452 if (ret < 0) 452 if (ret < 0)
453 goto out; 453 goto out;
454 kaddr = kmap_atomic(bh->b_page, KM_USER0); 454 kaddr = kmap_atomic(bh->b_page);
455 header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr); 455 header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);
456 curr = le64_to_cpu(header->ch_snapshot_list.ssl_next); 456 curr = le64_to_cpu(header->ch_snapshot_list.ssl_next);
457 kunmap_atomic(kaddr, KM_USER0); 457 kunmap_atomic(kaddr);
458 brelse(bh); 458 brelse(bh);
459 if (curr == 0) { 459 if (curr == 0) {
460 ret = 0; 460 ret = 0;
@@ -472,7 +472,7 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
472 ret = 0; /* No snapshots (started from a hole block) */ 472 ret = 0; /* No snapshots (started from a hole block) */
473 goto out; 473 goto out;
474 } 474 }
475 kaddr = kmap_atomic(bh->b_page, KM_USER0); 475 kaddr = kmap_atomic(bh->b_page);
476 while (n < nci) { 476 while (n < nci) {
477 cp = nilfs_cpfile_block_get_checkpoint(cpfile, curr, bh, kaddr); 477 cp = nilfs_cpfile_block_get_checkpoint(cpfile, curr, bh, kaddr);
478 curr = ~(__u64)0; /* Terminator */ 478 curr = ~(__u64)0; /* Terminator */
@@ -488,7 +488,7 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
488 488
489 next_blkoff = nilfs_cpfile_get_blkoff(cpfile, next); 489 next_blkoff = nilfs_cpfile_get_blkoff(cpfile, next);
490 if (curr_blkoff != next_blkoff) { 490 if (curr_blkoff != next_blkoff) {
491 kunmap_atomic(kaddr, KM_USER0); 491 kunmap_atomic(kaddr);
492 brelse(bh); 492 brelse(bh);
493 ret = nilfs_cpfile_get_checkpoint_block(cpfile, next, 493 ret = nilfs_cpfile_get_checkpoint_block(cpfile, next,
494 0, &bh); 494 0, &bh);
@@ -496,12 +496,12 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
496 WARN_ON(ret == -ENOENT); 496 WARN_ON(ret == -ENOENT);
497 goto out; 497 goto out;
498 } 498 }
499 kaddr = kmap_atomic(bh->b_page, KM_USER0); 499 kaddr = kmap_atomic(bh->b_page);
500 } 500 }
501 curr = next; 501 curr = next;
502 curr_blkoff = next_blkoff; 502 curr_blkoff = next_blkoff;
503 } 503 }
504 kunmap_atomic(kaddr, KM_USER0); 504 kunmap_atomic(kaddr);
505 brelse(bh); 505 brelse(bh);
506 *cnop = curr; 506 *cnop = curr;
507 ret = n; 507 ret = n;
@@ -592,24 +592,24 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
592 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh); 592 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);
593 if (ret < 0) 593 if (ret < 0)
594 goto out_sem; 594 goto out_sem;
595 kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); 595 kaddr = kmap_atomic(cp_bh->b_page);
596 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); 596 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
597 if (nilfs_checkpoint_invalid(cp)) { 597 if (nilfs_checkpoint_invalid(cp)) {
598 ret = -ENOENT; 598 ret = -ENOENT;
599 kunmap_atomic(kaddr, KM_USER0); 599 kunmap_atomic(kaddr);
600 goto out_cp; 600 goto out_cp;
601 } 601 }
602 if (nilfs_checkpoint_snapshot(cp)) { 602 if (nilfs_checkpoint_snapshot(cp)) {
603 ret = 0; 603 ret = 0;
604 kunmap_atomic(kaddr, KM_USER0); 604 kunmap_atomic(kaddr);
605 goto out_cp; 605 goto out_cp;
606 } 606 }
607 kunmap_atomic(kaddr, KM_USER0); 607 kunmap_atomic(kaddr);
608 608
609 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh); 609 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
610 if (ret < 0) 610 if (ret < 0)
611 goto out_cp; 611 goto out_cp;
612 kaddr = kmap_atomic(header_bh->b_page, KM_USER0); 612 kaddr = kmap_atomic(header_bh->b_page);
613 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); 613 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
614 list = &header->ch_snapshot_list; 614 list = &header->ch_snapshot_list;
615 curr_bh = header_bh; 615 curr_bh = header_bh;
@@ -621,13 +621,13 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
621 prev_blkoff = nilfs_cpfile_get_blkoff(cpfile, prev); 621 prev_blkoff = nilfs_cpfile_get_blkoff(cpfile, prev);
622 curr = prev; 622 curr = prev;
623 if (curr_blkoff != prev_blkoff) { 623 if (curr_blkoff != prev_blkoff) {
624 kunmap_atomic(kaddr, KM_USER0); 624 kunmap_atomic(kaddr);
625 brelse(curr_bh); 625 brelse(curr_bh);
626 ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr, 626 ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr,
627 0, &curr_bh); 627 0, &curr_bh);
628 if (ret < 0) 628 if (ret < 0)
629 goto out_header; 629 goto out_header;
630 kaddr = kmap_atomic(curr_bh->b_page, KM_USER0); 630 kaddr = kmap_atomic(curr_bh->b_page);
631 } 631 }
632 curr_blkoff = prev_blkoff; 632 curr_blkoff = prev_blkoff;
633 cp = nilfs_cpfile_block_get_checkpoint( 633 cp = nilfs_cpfile_block_get_checkpoint(
@@ -635,7 +635,7 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
635 list = &cp->cp_snapshot_list; 635 list = &cp->cp_snapshot_list;
636 prev = le64_to_cpu(list->ssl_prev); 636 prev = le64_to_cpu(list->ssl_prev);
637 } 637 }
638 kunmap_atomic(kaddr, KM_USER0); 638 kunmap_atomic(kaddr);
639 639
640 if (prev != 0) { 640 if (prev != 0) {
641 ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0, 641 ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0,
@@ -647,29 +647,29 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
647 get_bh(prev_bh); 647 get_bh(prev_bh);
648 } 648 }
649 649
650 kaddr = kmap_atomic(curr_bh->b_page, KM_USER0); 650 kaddr = kmap_atomic(curr_bh->b_page);
651 list = nilfs_cpfile_block_get_snapshot_list( 651 list = nilfs_cpfile_block_get_snapshot_list(
652 cpfile, curr, curr_bh, kaddr); 652 cpfile, curr, curr_bh, kaddr);
653 list->ssl_prev = cpu_to_le64(cno); 653 list->ssl_prev = cpu_to_le64(cno);
654 kunmap_atomic(kaddr, KM_USER0); 654 kunmap_atomic(kaddr);
655 655
656 kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); 656 kaddr = kmap_atomic(cp_bh->b_page);
657 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); 657 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
658 cp->cp_snapshot_list.ssl_next = cpu_to_le64(curr); 658 cp->cp_snapshot_list.ssl_next = cpu_to_le64(curr);
659 cp->cp_snapshot_list.ssl_prev = cpu_to_le64(prev); 659 cp->cp_snapshot_list.ssl_prev = cpu_to_le64(prev);
660 nilfs_checkpoint_set_snapshot(cp); 660 nilfs_checkpoint_set_snapshot(cp);
661 kunmap_atomic(kaddr, KM_USER0); 661 kunmap_atomic(kaddr);
662 662
663 kaddr = kmap_atomic(prev_bh->b_page, KM_USER0); 663 kaddr = kmap_atomic(prev_bh->b_page);
664 list = nilfs_cpfile_block_get_snapshot_list( 664 list = nilfs_cpfile_block_get_snapshot_list(
665 cpfile, prev, prev_bh, kaddr); 665 cpfile, prev, prev_bh, kaddr);
666 list->ssl_next = cpu_to_le64(cno); 666 list->ssl_next = cpu_to_le64(cno);
667 kunmap_atomic(kaddr, KM_USER0); 667 kunmap_atomic(kaddr);
668 668
669 kaddr = kmap_atomic(header_bh->b_page, KM_USER0); 669 kaddr = kmap_atomic(header_bh->b_page);
670 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); 670 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
671 le64_add_cpu(&header->ch_nsnapshots, 1); 671 le64_add_cpu(&header->ch_nsnapshots, 1);
672 kunmap_atomic(kaddr, KM_USER0); 672 kunmap_atomic(kaddr);
673 673
674 mark_buffer_dirty(prev_bh); 674 mark_buffer_dirty(prev_bh);
675 mark_buffer_dirty(curr_bh); 675 mark_buffer_dirty(curr_bh);
@@ -710,23 +710,23 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)
710 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh); 710 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);
711 if (ret < 0) 711 if (ret < 0)
712 goto out_sem; 712 goto out_sem;
713 kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); 713 kaddr = kmap_atomic(cp_bh->b_page);
714 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); 714 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
715 if (nilfs_checkpoint_invalid(cp)) { 715 if (nilfs_checkpoint_invalid(cp)) {
716 ret = -ENOENT; 716 ret = -ENOENT;
717 kunmap_atomic(kaddr, KM_USER0); 717 kunmap_atomic(kaddr);
718 goto out_cp; 718 goto out_cp;
719 } 719 }
720 if (!nilfs_checkpoint_snapshot(cp)) { 720 if (!nilfs_checkpoint_snapshot(cp)) {
721 ret = 0; 721 ret = 0;
722 kunmap_atomic(kaddr, KM_USER0); 722 kunmap_atomic(kaddr);
723 goto out_cp; 723 goto out_cp;
724 } 724 }
725 725
726 list = &cp->cp_snapshot_list; 726 list = &cp->cp_snapshot_list;
727 next = le64_to_cpu(list->ssl_next); 727 next = le64_to_cpu(list->ssl_next);
728 prev = le64_to_cpu(list->ssl_prev); 728 prev = le64_to_cpu(list->ssl_prev);
729 kunmap_atomic(kaddr, KM_USER0); 729 kunmap_atomic(kaddr);
730 730
731 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh); 731 ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
732 if (ret < 0) 732 if (ret < 0)
@@ -750,29 +750,29 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)
750 get_bh(prev_bh); 750 get_bh(prev_bh);
751 } 751 }
752 752
753 kaddr = kmap_atomic(next_bh->b_page, KM_USER0); 753 kaddr = kmap_atomic(next_bh->b_page);
754 list = nilfs_cpfile_block_get_snapshot_list( 754 list = nilfs_cpfile_block_get_snapshot_list(
755 cpfile, next, next_bh, kaddr); 755 cpfile, next, next_bh, kaddr);
756 list->ssl_prev = cpu_to_le64(prev); 756 list->ssl_prev = cpu_to_le64(prev);
757 kunmap_atomic(kaddr, KM_USER0); 757 kunmap_atomic(kaddr);
758 758
759 kaddr = kmap_atomic(prev_bh->b_page, KM_USER0); 759 kaddr = kmap_atomic(prev_bh->b_page);
760 list = nilfs_cpfile_block_get_snapshot_list( 760 list = nilfs_cpfile_block_get_snapshot_list(
761 cpfile, prev, prev_bh, kaddr); 761 cpfile, prev, prev_bh, kaddr);
762 list->ssl_next = cpu_to_le64(next); 762 list->ssl_next = cpu_to_le64(next);
763 kunmap_atomic(kaddr, KM_USER0); 763 kunmap_atomic(kaddr);
764 764
765 kaddr = kmap_atomic(cp_bh->b_page, KM_USER0); 765 kaddr = kmap_atomic(cp_bh->b_page);
766 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr); 766 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
767 cp->cp_snapshot_list.ssl_next = cpu_to_le64(0); 767 cp->cp_snapshot_list.ssl_next = cpu_to_le64(0);
768 cp->cp_snapshot_list.ssl_prev = cpu_to_le64(0); 768 cp->cp_snapshot_list.ssl_prev = cpu_to_le64(0);
769 nilfs_checkpoint_clear_snapshot(cp); 769 nilfs_checkpoint_clear_snapshot(cp);
770 kunmap_atomic(kaddr, KM_USER0); 770 kunmap_atomic(kaddr);
771 771
772 kaddr = kmap_atomic(header_bh->b_page, KM_USER0); 772 kaddr = kmap_atomic(header_bh->b_page);
773 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr); 773 header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
774 le64_add_cpu(&header->ch_nsnapshots, -1); 774 le64_add_cpu(&header->ch_nsnapshots, -1);
775 kunmap_atomic(kaddr, KM_USER0); 775 kunmap_atomic(kaddr);
776 776
777 mark_buffer_dirty(next_bh); 777 mark_buffer_dirty(next_bh);
778 mark_buffer_dirty(prev_bh); 778 mark_buffer_dirty(prev_bh);
@@ -829,13 +829,13 @@ int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno)
829 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &bh); 829 ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &bh);
830 if (ret < 0) 830 if (ret < 0)
831 goto out; 831 goto out;
832 kaddr = kmap_atomic(bh->b_page, KM_USER0); 832 kaddr = kmap_atomic(bh->b_page);
833 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr); 833 cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
834 if (nilfs_checkpoint_invalid(cp)) 834 if (nilfs_checkpoint_invalid(cp))
835 ret = -ENOENT; 835 ret = -ENOENT;
836 else 836 else
837 ret = nilfs_checkpoint_snapshot(cp); 837 ret = nilfs_checkpoint_snapshot(cp);
838 kunmap_atomic(kaddr, KM_USER0); 838 kunmap_atomic(kaddr);
839 brelse(bh); 839 brelse(bh);
840 840
841 out: 841 out:
@@ -912,12 +912,12 @@ int nilfs_cpfile_get_stat(struct inode *cpfile, struct nilfs_cpstat *cpstat)
912 ret = nilfs_cpfile_get_header_block(cpfile, &bh); 912 ret = nilfs_cpfile_get_header_block(cpfile, &bh);
913 if (ret < 0) 913 if (ret < 0)
914 goto out_sem; 914 goto out_sem;
915 kaddr = kmap_atomic(bh->b_page, KM_USER0); 915 kaddr = kmap_atomic(bh->b_page);
916 header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr); 916 header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);
917 cpstat->cs_cno = nilfs_mdt_cno(cpfile); 917 cpstat->cs_cno = nilfs_mdt_cno(cpfile);
918 cpstat->cs_ncps = le64_to_cpu(header->ch_ncheckpoints); 918 cpstat->cs_ncps = le64_to_cpu(header->ch_ncheckpoints);
919 cpstat->cs_nsss = le64_to_cpu(header->ch_nsnapshots); 919 cpstat->cs_nsss = le64_to_cpu(header->ch_nsnapshots);
920 kunmap_atomic(kaddr, KM_USER0); 920 kunmap_atomic(kaddr);
921 brelse(bh); 921 brelse(bh);
922 922
923 out_sem: 923 out_sem: