linux-ext4 - Re: [PATCH v2 1/2] ext4: arrange ext4_*

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Message-ID: <BANLkTi=mdiK7us_b-YKhiu60csQJTcihsw@mail.gmail.com>
Date:	Thu, 2 Jun 2011 19:04:40 +0900
From:	Akinobu Mita <akinobu.mita@...il.com>
To:	Amir Goldstein <amir73il@...il.com>
Cc:	Andreas Dilger <adilger.kernel@...ger.ca>,
	linux-kernel@...r.kernel.org, "Theodore Ts'o" <tytso@....edu>,
	linux-ext4@...r.kernel.org, Yongqiang Yang <xiaoqiangnk@...il.com>
Subject: Re: [PATCH v2 1/2] ext4: arrange ext4_*_bit() macros

2011/6/2 Amir Goldstein <amir73il@...il.com>:
> FYI, one of the snapshot patches (snapshot_exclude_bitmap.patch)
> uses ext4_set_bit_atomic() to set bits in the exclude bitmap when
> moving blocks to snapshot file.
> Since moving blocks is not done in allocation context, there is no
> buddy/group lock held while manipulating the exclude bitmap.
> So I would appreciate if this specific macro will not be removed.
>
> Thanks, Yongqiang , for pointing that out.

OK, I'll keep ext4_*_bit_atomic() in the next version.
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