linux-kernel - Re: [RFC PATCH] iov_iter: Convert iterate*() to inline funcs

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Message-ID: <286907.1692103889@warthog.procyon.org.uk>
Date:   Tue, 15 Aug 2023 13:51:29 +0100
From:   David Howells <dhowells@...hat.com>
To:     David Laight <David.Laight@...LAB.COM>
Cc:     dhowells@...hat.com, Alexander Viro <viro@...iv.linux.org.uk>,
        Jens Axboe <axboe@...nel.dk>, Christoph Hellwig <hch@....de>,
        Christian Brauner <christian@...uner.io>,
        Matthew Wilcox <willy@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "jlayton@...nel.org" <jlayton@...nel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] iov_iter: Convert iterate*() to inline funcs

David Laight <David.Laight@...LAB.COM> wrote:

> Actually quite typical because inlining happens much later on.
> I suspect that the #define benefits from the compile front-end
> optimising constants.

I managed to mostly pull it back, and even make some functions slightly
smaller, in the v2 I posted.  Mostly that came about by arranging things to
look a bit more like the upstream macro version.

David