Re: [PATCH 5/6] xfs_scrub: make phase 4 go straight to fstrim if nothing to fix

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On 5/5/22 11:08 AM, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
> 
> If there's nothing to repair in phase 4, there's no need to hold up the
> FITRIM call to do the summary count scan that prepares us to repair
> filesystem metadata.  Rearrange this a bit.
> 
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>


> +
> +	/*
> +	 * If errors remain on the filesystem, do not trim anything.  We don't
> +	 * have any threads running, so it's ok to skip the ctx lock here.
> +	 */
> +	if (ctx->corruptions_found || ctx->unfixable_errors == 0)
> +		return 0;
> +
> +maybe_trim:
> +	trim_filesystem(ctx);
> +	return 0;
>  }

I'm a little confused by the unfixable_errors test, is that correct?

Why do you bail out if there are 0 unfixable errors?

-Eric



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