diff options
| -rw-r--r-- | fs/btrfs/volumes.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index bf0decaac7f3..119dc26ca141 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2014,42 +2014,43 @@ static u64 btrfs_num_devices(struct btrfs_fs_info *fs_info) return num_devices; } +static void btrfs_scratch_superblock(struct btrfs_fs_info *fs_info, + struct block_device *bdev, int copy_num) +{ + struct btrfs_super_block *disk_super; + struct page *page; + int ret; + + disk_super = btrfs_read_dev_one_super(bdev, copy_num, false); + if (IS_ERR(disk_super)) + return; + + memset(&disk_super->magic, 0, sizeof(disk_super->magic)); + page = virt_to_page(disk_super); + set_page_dirty(page); + lock_page(page); + /* write_on_page() unlocks the page */ + ret = write_one_page(page); + if (ret) + btrfs_warn(fs_info, "error clearing superblock number %d (%d)", + copy_num, ret); + btrfs_release_disk_super(disk_super); +} + void btrfs_scratch_superblocks(struct btrfs_fs_info *fs_info, struct block_device *bdev, const char *device_path) { - struct btrfs_super_block *disk_super; int copy_num; if (!bdev) return; for (copy_num = 0; copy_num < BTRFS_SUPER_MIRROR_MAX; copy_num++) { - struct page *page; - int ret; - - disk_super = btrfs_read_dev_one_super(bdev, copy_num, false); - if (IS_ERR(disk_super)) - continue; - - if (bdev_is_zoned(bdev)) { + if (bdev_is_zoned(bdev)) btrfs_reset_sb_log_zones(bdev, copy_num); - continue; - } - - memset(&disk_super->magic, 0, sizeof(disk_super->magic)); - - page = virt_to_page(disk_super); - set_page_dirty(page); - lock_page(page); - /* write_on_page() unlocks the page */ - ret = write_one_page(page); - if (ret) - btrfs_warn(fs_info, - "error clearing superblock number %d (%d)", - copy_num, ret); - btrfs_release_disk_super(disk_super); - + else + btrfs_scratch_superblock(fs_info, bdev, copy_num); } /* Notify udev that device has changed */ |