[PATCH] xfs_repair: multithread phase 2

[Christoph Hellwig]

Looks good except for some trivial nitpicks below,


Reviewed-by: Christoph Hellwig <hch at lst.de>

Btw, your previous patch used just

"repair:" as the Subject prefix, while this one uses xfs_repair.  I
don't really care about, but we should standardize on one.  The more
recent usage seems to include the xfs_ prefix.

> +				     scanfunc_bno : scanfunc_cnt, 0,
> +				     (void *)agcnts);

no need for the void cast.

> +#define SCAN_THREADS 32

this is unused now.

> +	agcnts = malloc(mp->m_sb.sb_agcount * sizeof(*agcnts));
> +	if (!agcnts) {
> +		do_abort(_("no memory for ag header counts\n"));
> +		return;
> +	}
> +	memset(agcnts, 0, mp->m_sb.sb_agcount * sizeof(*agcnts));

this could use a calloc.

>  					break;
> +				case PHASE2_THREADS:
> +					phase2_threads = (int)strtol(val, NULL, 0);
> +					break;

This option also needs to be documented in the man page.  Also shouldn't
we try to handle errors from strtol?  Also maybe strtoul would be a
better choice as we certainly don't want a negative number of threads.