linux-kernel - commit 45cd8d8e -- why?

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Date:	Fri, 27 Apr 2007 19:50:19 -0700
From:	Roland Dreier <rdreier@...co.com>
To:	akpm@...ux-foundation.org, gregkh@...e.de
Cc:	linux-kernel@...r.kernel.org
Subject: commit 45cd8d8e -- why?

The changelog says:

    fs/sysfs/bin.c: In function 'read':
    fs/sysfs/bin.c:77: warning: format '%zd' expects type 'signed size_t', but argument 4 has type 'int'

but the signature of the function read() is

    read(struct file * file, char __user * userbuf, size_t count, loff_t * off)

and git blame seems to show it was always thus -- ie count was always size_t.

And now on x86-64 and ia64 with gcc 4.1 at least, I get:

    fs/sysfs/bin.c: In function 'read':
    fs/sysfs/bin.c:62: warning: format '%d' expects type 'int', but argument 4 has type 'size_t'

Andrew, what compiler were you using to get that warning?  Should we
revert commit 45cd8d8e?

 - R.
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