Re: [PATCH v6 19/28] btrfs: wait existing extents before truncating

Josef Bacik
2019-12-17T19:53:25Z

On 12/12/19 11:09 PM, Naohiro Aota wrote:
> When truncating a file, file buffers which have already been allocated but
> not yet written may be truncated. Truncating these buffers could cause
> breakage of a sequential write pattern in a block group if the truncated
> blocks are for example followed by blocks allocated to another file. To
> avoid this problem, always wait for write out of all unwritten buffers
> before proceeding with the truncate execution.
>
> Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>

Reviewed-by: Josef Bacik <josef@toxicpanda.com>

Thanks,

Josef