diff options
| -rw-r--r-- | fs/f2fs/f2fs.h | 1 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 126 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 11 |
3 files changed, 138 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 002c417b0a53..23a84d7f17b8 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -3156,6 +3156,7 @@ int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type, unsigned int val, int alloc); void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc); int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi); +int f2fs_check_write_pointer(struct f2fs_sb_info *sbi); int f2fs_build_segment_manager(struct f2fs_sb_info *sbi); void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi); int __init f2fs_create_segment_manager_caches(void); diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 5c3018743a9f..3ec912bd5504 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -4370,6 +4370,90 @@ out: #ifdef CONFIG_BLK_DEV_ZONED +static int check_zone_write_pointer(struct f2fs_sb_info *sbi, + struct f2fs_dev_info *fdev, + struct blk_zone *zone) +{ + unsigned int wp_segno, wp_blkoff, zone_secno, zone_segno, segno; + block_t zone_block, wp_block, last_valid_block; + unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT; + int i, s, b, ret; + struct seg_entry *se; + + if (zone->type != BLK_ZONE_TYPE_SEQWRITE_REQ) + return 0; + + wp_block = fdev->start_blk + (zone->wp >> log_sectors_per_block); + wp_segno = GET_SEGNO(sbi, wp_block); + wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno); + zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block); + zone_segno = GET_SEGNO(sbi, zone_block); + zone_secno = GET_SEC_FROM_SEG(sbi, zone_segno); + + if (zone_segno >= MAIN_SEGS(sbi)) + return 0; + + /* + * Skip check of zones cursegs point to, since + * fix_curseg_write_pointer() checks them. + */ + for (i = 0; i < NO_CHECK_TYPE; i++) + if (zone_secno == GET_SEC_FROM_SEG(sbi, + CURSEG_I(sbi, i)->segno)) + return 0; + + /* + * Get last valid block of the zone. + */ + last_valid_block = zone_block - 1; + for (s = sbi->segs_per_sec - 1; s >= 0; s--) { + segno = zone_segno + s; + se = get_seg_entry(sbi, segno); + for (b = sbi->blocks_per_seg - 1; b >= 0; b--) + if (f2fs_test_bit(b, se->cur_valid_map)) { + last_valid_block = START_BLOCK(sbi, segno) + b; + break; + } + if (last_valid_block >= zone_block) + break; + } + + /* + * If last valid block is beyond the write pointer, report the + * inconsistency. This inconsistency does not cause write error + * because the zone will not be selected for write operation until + * it get discarded. Just report it. + */ + if (last_valid_block >= wp_block) { + f2fs_notice(sbi, "Valid block beyond write pointer: " + "valid block[0x%x,0x%x] wp[0x%x,0x%x]", + GET_SEGNO(sbi, last_valid_block), + GET_BLKOFF_FROM_SEG0(sbi, last_valid_block), + wp_segno, wp_blkoff); + return 0; + } + + /* + * If there is no valid block in the zone and if write pointer is + * not at zone start, reset the write pointer. + */ + if (last_valid_block + 1 == zone_block && zone->wp != zone->start) { + f2fs_notice(sbi, + "Zone without valid block has non-zero write " + "pointer. Reset the write pointer: wp[0x%x,0x%x]", + wp_segno, wp_blkoff); + ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block, + zone->len >> log_sectors_per_block); + if (ret) { + f2fs_err(sbi, "Discard zone failed: %s (errno=%d)", + fdev->path, ret); + return ret; + } + } + + return 0; +} + static struct f2fs_dev_info *get_target_zoned_dev(struct f2fs_sb_info *sbi, block_t zone_blkaddr) { @@ -4441,6 +4525,10 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type) "curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff); allocate_segment_by_default(sbi, type, true); + /* check consistency of the zone curseg pointed to */ + if (check_zone_write_pointer(sbi, zbd, &zone)) + return -EIO; + /* check newly assigned zone */ cs_section = GET_SEC_FROM_SEG(sbi, cs->segno); cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section)); @@ -4492,11 +4580,49 @@ int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi) return 0; } + +struct check_zone_write_pointer_args { + struct f2fs_sb_info *sbi; + struct f2fs_dev_info *fdev; +}; + +static int check_zone_write_pointer_cb(struct blk_zone *zone, unsigned int idx, + void *data) { + struct check_zone_write_pointer_args *args; + args = (struct check_zone_write_pointer_args *)data; + + return check_zone_write_pointer(args->sbi, args->fdev, zone); +} + +int f2fs_check_write_pointer(struct f2fs_sb_info *sbi) +{ + int i, ret; + struct check_zone_write_pointer_args args; + + for (i = 0; i < sbi->s_ndevs; i++) { + if (!bdev_is_zoned(FDEV(i).bdev)) + continue; + + args.sbi = sbi; + args.fdev = &FDEV(i); + ret = blkdev_report_zones(FDEV(i).bdev, 0, BLK_ALL_ZONES, + check_zone_write_pointer_cb, &args); + if (ret < 0) + return ret; + } + + return 0; +} #else int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi) { return 0; } + +int f2fs_check_write_pointer(struct f2fs_sb_info *sbi) +{ + return 0; +} #endif /* diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 5111e1ffe58a..755ad57c795b 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -3544,6 +3544,17 @@ try_onemore: goto free_meta; } } + + /* + * If the f2fs is not readonly and fsync data recovery succeeds, + * check zoned block devices' write pointer consistency. + */ + if (!err && !f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) { + err = f2fs_check_write_pointer(sbi); + if (err) + goto free_meta; + } + reset_checkpoint: /* f2fs_recover_fsync_data() cleared this already */ clear_sbi_flag(sbi, SBI_POR_DOING); |