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Re: [PATCH] xfstests: fix async io error handling in fsx

To: Felix Blyakher <felixb@xxxxxxx>
Subject: Re: [PATCH] xfstests: fix async io error handling in fsx
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 6 Apr 2009 12:33:31 -0400
Cc: xfs@xxxxxxxxxxx
In-reply-to: <1239031576-26279-1-git-send-email-felixb@xxxxxxx>
References: <1239031576-26279-1-git-send-email-felixb@xxxxxxx>
User-agent: Mutt/1.5.18 (2008-05-17)
On Mon, Apr 06, 2009 at 10:26:16AM -0500, Felix Blyakher wrote:
> The result of async io returned in the event.res in addition
> to the number of bytes read/written provides negated error
> number. The broken libaio defines event.res as unsigned
> while the same structure in the kernel defines it as signed.
> The kernel indeed treats it as signed, and returns the
> negated error number. Till libaio is fixed we provide
> the signed long temp var.
> Also set errno for each error condition in aio_rw, as the
> caller is not aio aware and expects ret(-1)+errno by the
> traditional libc convention.

Looks good.

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

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