checkpoint.c (1601839e9e5bd5726d744c9c5919f87dc808bbcc) checkpoint.c (caf0047e7e1e60a7ad1d655d3b81b32e2dfb6095)
1/*
2 * fs/f2fs/checkpoint.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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185
186static int f2fs_write_meta_page(struct page *page,
187 struct writeback_control *wbc)
188{
189 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
190
191 trace_f2fs_writepage(page, META);
192
1/*
2 * fs/f2fs/checkpoint.c
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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185
186static int f2fs_write_meta_page(struct page *page,
187 struct writeback_control *wbc)
188{
189 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
190
191 trace_f2fs_writepage(page, META);
192
193 if (unlikely(sbi->por_doing))
193 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
194 goto redirty_out;
195 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
196 goto redirty_out;
197 if (unlikely(f2fs_cp_error(sbi)))
198 goto redirty_out;
199
200 f2fs_wait_on_page_writeback(page, META);
201 write_meta_page(sbi, page);

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480
481void recover_orphan_inodes(struct f2fs_sb_info *sbi)
482{
483 block_t start_blk, orphan_blkaddr, i, j;
484
485 if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG))
486 return;
487
194 goto redirty_out;
195 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
196 goto redirty_out;
197 if (unlikely(f2fs_cp_error(sbi)))
198 goto redirty_out;
199
200 f2fs_wait_on_page_writeback(page, META);
201 write_meta_page(sbi, page);

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480
481void recover_orphan_inodes(struct f2fs_sb_info *sbi)
482{
483 block_t start_blk, orphan_blkaddr, i, j;
484
485 if (!is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG))
486 return;
487
488 sbi->por_doing = true;
488 set_sbi_flag(sbi, SBI_POR_DOING);
489
490 start_blk = __start_cp_addr(sbi) + 1 +
491 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
492 orphan_blkaddr = __start_sum_addr(sbi) - 1;
493
494 ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP);
495
496 for (i = 0; i < orphan_blkaddr; i++) {

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501 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
502 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
503 recover_orphan_inode(sbi, ino);
504 }
505 f2fs_put_page(page, 1);
506 }
507 /* clear Orphan Flag */
508 clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG);
489
490 start_blk = __start_cp_addr(sbi) + 1 +
491 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
492 orphan_blkaddr = __start_sum_addr(sbi) - 1;
493
494 ra_meta_pages(sbi, start_blk, orphan_blkaddr, META_CP);
495
496 for (i = 0; i < orphan_blkaddr; i++) {

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501 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
502 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
503 recover_orphan_inode(sbi, ino);
504 }
505 f2fs_put_page(page, 1);
506 }
507 /* clear Orphan Flag */
508 clear_ckpt_flags(F2FS_CKPT(sbi), CP_ORPHAN_PRESENT_FLAG);
509 sbi->por_doing = false;
509 clear_sbi_flag(sbi, SBI_POR_DOING);
510 return;
511}
512
513static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
514{
515 struct list_head *head;
516 struct f2fs_orphan_block *orphan_blk = NULL;
517 unsigned int nentries = 0;

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968 orphan_blocks);
969 }
970
971 if (orphan_num)
972 set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
973 else
974 clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
975
510 return;
511}
512
513static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
514{
515 struct list_head *head;
516 struct f2fs_orphan_block *orphan_blk = NULL;
517 unsigned int nentries = 0;

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968 orphan_blocks);
969 }
970
971 if (orphan_num)
972 set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
973 else
974 clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
975
976 if (sbi->need_fsck)
976 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
977 set_ckpt_flags(ckpt, CP_FSCK_FLAG);
978
979 /* update SIT/NAT bitmap */
980 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
981 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
982
983 crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset));
984 *((__le32 *)((unsigned char *)ckpt +

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1042 wait_on_all_pages_writeback(sbi);
1043
1044 release_dirty_inode(sbi);
1045
1046 if (unlikely(f2fs_cp_error(sbi)))
1047 return;
1048
1049 clear_prefree_segments(sbi);
977 set_ckpt_flags(ckpt, CP_FSCK_FLAG);
978
979 /* update SIT/NAT bitmap */
980 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
981 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
982
983 crc32 = f2fs_crc32(ckpt, le32_to_cpu(ckpt->checksum_offset));
984 *((__le32 *)((unsigned char *)ckpt +

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1042 wait_on_all_pages_writeback(sbi);
1043
1044 release_dirty_inode(sbi);
1045
1046 if (unlikely(f2fs_cp_error(sbi)))
1047 return;
1048
1049 clear_prefree_segments(sbi);
1050 F2FS_RESET_SB_DIRT(sbi);
1050 clear_sbi_flag(sbi, SBI_IS_DIRTY);
1051}
1052
1053/*
1054 * We guarantee that this checkpoint procedure will not fail.
1055 */
1056void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1057{
1058 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1059 unsigned long long ckpt_ver;
1060
1061 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1062
1063 mutex_lock(&sbi->cp_mutex);
1064
1051}
1052
1053/*
1054 * We guarantee that this checkpoint procedure will not fail.
1055 */
1056void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1057{
1058 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1059 unsigned long long ckpt_ver;
1060
1061 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1062
1063 mutex_lock(&sbi->cp_mutex);
1064
1065 if (!sbi->s_dirty &&
1065 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
1066 cpc->reason != CP_DISCARD && cpc->reason != CP_UMOUNT)
1067 goto out;
1068 if (unlikely(f2fs_cp_error(sbi)))
1069 goto out;
1070 if (block_operations(sbi))
1071 goto out;
1072
1073 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");

--- 70 unchanged lines hidden --- 		1066 cpc->reason != CP_DISCARD && cpc->reason != CP_UMOUNT)
1067 goto out;
1068 if (unlikely(f2fs_cp_error(sbi)))
1069 goto out;
1070 if (block_operations(sbi))
1071 goto out;
1072
1073 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");

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