From: "Theodore Ts'o" <tytso@mit.edu>
To: Li zeming <zeming@nfschina.com>
Cc: adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ext4: extents: Remove unnecessary ‘NULL’ values from ablocks
Date: Mon, 1 Apr 2024 23:55:35 -0400 [thread overview]
Message-ID: <20240402035535.GD1189142@mit.edu> (raw)
In-Reply-To: <20240402024804.29411-1-zeming@nfschina.com>
On Tue, Apr 02, 2024 at 10:48:04AM +0800, Li zeming wrote:
> ablocks is assigned first, so it does not need to initialize the
> assignment.
That's technically true, but the compiler is perfectly capable of
optimizing it out. So it's harmless, and removing it does make the
code a bit more fragile, since it needs to be set so that the cleanup
code doesn't accidentally dereference an uninitialized pointer.
Cheers,
- Ted
next prev parent reply other threads:[~2024-04-02 3:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-02 2:48 [PATCH] ext4: extents: Remove unnecessary ‘NULL’ values from ablocks Li zeming
2024-04-02 3:55 ` Theodore Ts'o [this message]
2024-04-08 20:51 ` Andreas Dilger
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