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From: Christoph Hellwig <[email protected]>
To: David Laight <[email protected]>
Cc: "[email protected]" <[email protected]>,
	"[email protected]" <[email protected]>,
	"[email protected]" <[email protected]>,
	Jens Axboe <[email protected]>,
	"David S. Miller" <[email protected]>,
	Al Viro <[email protected]>,
	linux-fsdevel <[email protected]>
Subject: Re: [PATCH 3/9 next] lib/iov_iter: Improved function for importing iovec[] from userpace.
Date: Mon, 21 Sep 2020 15:10:51 +0100	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On Tue, Sep 15, 2020 at 02:55:17PM +0000, David Laight wrote:
> 
> import_iovec() has a 'pointer by reference' parameter to pass in the
> (on-stack) iov[] cache and return the address of a larger copy that
> the caller must free.
> This is non-intuitive, faffy to setup, and not that efficient.
> Instead just pass in the address of the cache and return the address
> to free (on success) or PTR_ERR() (on error).

To me it seems pretty sensible, and in fact the conversions to your
new API seem to add more lines than they remove.

  reply	other threads:[~2020-09-21 14:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-15 14:55 [PATCH 3/9 next] lib/iov_iter: Improved function for importing iovec[] from userpace David Laight
2020-09-21 14:10 ` Christoph Hellwig [this message]
2020-09-21 14:57   ` David Laight

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