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btrfs: alloc_chunk: do not refurbish num_bytes 

The variable num_bytes is used to store the chunk length of the chunk
that we're allocating. Do not reuse it for something really different in
the same function.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Hans van Kranenburg <hans.van.kranenburg@mendix.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Hans van Kranenburg 2018-10-04 23:24:38 +02:00 committed by David Sterba
parent 3cd24c6980
commit 2f29df4fc2
1 changed files with 3 additions and 4 deletions
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7
fs/btrfs/volumes.c
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@ -4869,10 +4869,9 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
if (ret)
goto error_del_extent;
for (i = 0; i < map->num_stripes; i++) {
num_bytes = map->stripes[i].dev->bytes_used + stripe_size;
btrfs_device_set_bytes_used(map->stripes[i].dev, num_bytes);
}
for (i = 0; i < map->num_stripes; i++)
btrfs_device_set_bytes_used(map->stripes[i].dev,
map->stripes[i].dev->bytes_used + stripe_size);
atomic64_sub(stripe_size * map->num_stripes, &info->free_chunk_space);