linux-kernel - Re: [EXT4 set 7][PATCH 1/1]Remove 32000 subdirs limit.

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Message-ID: <84144f020707130522l3a800b61i6b7c4d9084277cdf@mail.gmail.com>
Date:	Fri, 13 Jul 2007 15:22:29 +0300
From:	"Pekka Enberg" <penberg@...helsinki.fi>
To:	"Kalpak Shah" <kalpak@...sterfs.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>, cmm@...ibm.com,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-ext4@...r.kernel.org
Subject: Re: [EXT4 set 7][PATCH 1/1]Remove 32000 subdirs limit.

On 7/13/07, Kalpak Shah <kalpak@...sterfs.com> wrote:
> > EXT4_DIR_LINK_MAX() is buggy: it evaluates its arg twice.
>
> #define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX)

[snip]

> Sorry, I didn't understand what is the problem with this macro?

The expression represented by 'dir' is evaluated twice (think dir++
here). It's safer to make it a static inline function.

                                       Pekka
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