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Btrfs: fix unprotected device->bytes_used update
We should update device->bytes_used in the lock context of chunk_mutex, or we would get wrong data. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <clm@fb.com>
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1 changed files with 3 additions and 1 deletions
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@ -4429,6 +4429,9 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
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if (ret)
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goto error_del_extent;
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for (i = 0; i < map->num_stripes; i++)
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map->stripes[i].dev->bytes_used += stripe_size;
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free_extent_map(em);
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check_raid56_incompat_flag(extent_root->fs_info, type);
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@ -4500,7 +4503,6 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,
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device = map->stripes[i].dev;
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dev_offset = map->stripes[i].physical;
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device->bytes_used += stripe_size;
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ret = btrfs_update_device(trans, device);
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if (ret)
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goto out;
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