linux-kernel - Re: [PATCH] aio: fix kernel bug when page is temporally busy

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Date:	Fri, 9 Feb 2007 02:14:44 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jiri Kosina <jikos@...os.cz>
Cc:	"Ananiev, Leonid I" <leonid.i.ananiev@...el.com>,
	linux-kernel@...r.kernel.org, linux-aio <linux-aio@...ck.org>,
	Zach Brown <zach.brown@...cle.com>, suparna@...ibm.com,
	Chris Mason <chris.mason@...cle.com>,
	Badari Pulavarty <pbadari@...ibm.com>, Jan Kara <jack@...e.cz>
Subject: Re: [PATCH] aio: fix kernel bug when page is  temporally busy

On Fri, 9 Feb 2007 10:54:36 +0100 (CET) Jiri Kosina <jikos@...os.cz> wrote:

> @@ -1204,7 +1204,7 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
>  			do_generic_file_read(filp,ppos,&desc,file_read_actor);
>  			retval += desc.written;
>  			if (desc.error) {
> -				retval = retval ?: desc.error;
> +				retval = desc.error;
>  				break;
>  			}

Nope.  On error the read() syscall must return the number of bytes which
were successfully read.
-
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