diff options
| author |   Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2021-04-16 12:05:27 +0900 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2021-04-19 17:25:23 +0200 |
| commit | 1d68128c107a0b8c0c9125cb05d4771ddc438369 (patch) | |
| tree | 1f93c8270039cee0cd757ce5217daace8ff206fb /fs/btrfs/zoned.c | |
| parent | btrfs: fix race between transaction aborts and fsyncs leading to use-after-free (diff) | |
| download | linux-dev-1d68128c107a0b8c0c9125cb05d4771ddc438369.tar.xz linux-dev-1d68128c107a0b8c0c9125cb05d4771ddc438369.zip | |
btrfs: zoned: fail mount if the device does not support zone append
For zoned btrfs, zone append is mandatory to write to a sequential write
only zone, otherwise parallel writes to the same zone could result in
unaligned write errors.
If a zoned block device does not support zone append (e.g. a dm-crypt
zoned device using a non-NULL IV cypher), fail to mount.
CC: stable@vger.kernel.org # 5.12
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/zoned.c')
| -rw-r--r-- | fs/btrfs/zoned.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index eeb3ebe11d7a..70b23a0d03b1 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -342,6 +342,13 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device) if (!IS_ALIGNED(nr_sectors, zone_sectors)) zone_info->nr_zones++; + if (bdev_is_zoned(bdev) && zone_info->max_zone_append_size == 0) { + btrfs_err(fs_info, "zoned: device %pg does not support zone append", + bdev); + ret = -EINVAL; + goto out; + } + zone_info->seq_zones = bitmap_zalloc(zone_info->nr_zones, GFP_KERNEL); if (!zone_info->seq_zones) { ret = -ENOMEM; |