diff options
Diffstat (limited to 'fs/btrfs/zoned.c')
-rw-r--r-- | fs/btrfs/zoned.c | 52 |
1 files changed, 36 insertions, 16 deletions
diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 9cfb5b741718..17554caf8b86 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -789,36 +789,56 @@ static inline bool is_sb_log_zone(struct btrfs_zoned_device_info *zinfo, return true; } -void btrfs_advance_sb_log(struct btrfs_device *device, int mirror) +int btrfs_advance_sb_log(struct btrfs_device *device, int mirror) { struct btrfs_zoned_device_info *zinfo = device->zone_info; struct blk_zone *zone; + int i; if (!is_sb_log_zone(zinfo, mirror)) - return; + return 0; zone = &zinfo->sb_zones[BTRFS_NR_SB_LOG_ZONES * mirror]; - if (zone->cond != BLK_ZONE_COND_FULL) { + for (i = 0; i < BTRFS_NR_SB_LOG_ZONES; i++) { + /* Advance the next zone */ + if (zone->cond == BLK_ZONE_COND_FULL) { + zone++; + continue; + } + if (zone->cond == BLK_ZONE_COND_EMPTY) zone->cond = BLK_ZONE_COND_IMP_OPEN; - zone->wp += (BTRFS_SUPER_INFO_SIZE >> SECTOR_SHIFT); + zone->wp += SUPER_INFO_SECTORS; + + if (sb_zone_is_full(zone)) { + /* + * No room left to write new superblock. Since + * superblock is written with REQ_SYNC, it is safe to + * finish the zone now. + * + * If the write pointer is exactly at the capacity, + * explicit ZONE_FINISH is not necessary. + */ + if (zone->wp != zone->start + zone->capacity) { + int ret; + + ret = blkdev_zone_mgmt(device->bdev, + REQ_OP_ZONE_FINISH, zone->start, + zone->len, GFP_NOFS); + if (ret) + return ret; + } - if (zone->wp == zone->start + zone->len) + zone->wp = zone->start + zone->len; zone->cond = BLK_ZONE_COND_FULL; - - return; + } + return 0; } - zone++; - ASSERT(zone->cond != BLK_ZONE_COND_FULL); - if (zone->cond == BLK_ZONE_COND_EMPTY) - zone->cond = BLK_ZONE_COND_IMP_OPEN; - - zone->wp += (BTRFS_SUPER_INFO_SIZE >> SECTOR_SHIFT); - - if (zone->wp == zone->start + zone->len) - zone->cond = BLK_ZONE_COND_FULL; + /* All the zones are FULL. Should not reach here. */ + ASSERT(0); + return -EIO; } int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror) |