linux-ext4 - Re: [PATCH 1/2] libext2fs: fix alloc_allocate_group_table() if the flexbg

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Message-ID: <20140430023414.GC6714@thunk.org>
Date:	Tue, 29 Apr 2014 22:34:14 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Lukáš Czerner <lczerner@...hat.com>
Cc:	Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 1/2] libext2fs: fix alloc_allocate_group_table() if the
 flexbg_offset wraps

On Tue, Apr 29, 2014 at 01:02:07PM +0200, Lukáš Czerner wrote:
> 
> Not sure about this, but I just wonder whether this would work with
> bigalloc file system as well since it is true that we're testing
> blocks in this condition but in ext2fs_test_block_bitmap_range2()
> we're searching for a free cluster.

No, we're fine because the bitmap functions takes block numbers as
arguments, not cluster numbers.  (The bitmap functions converts block
numbers to cluster numbers, and there's a special hack for mke2fs so
we don't burn a separate cluster for each allocation bitmap block.)

					- Ted
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