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Date: Wed, 21 Jul 2021 07:37:17 +0200 From: Christoph Hellwig <hch@....de> To: Mikulas Patocka <mikulas@...bright.com> Cc: Christoph Hellwig <hch@....de>, Jan Kara <jack@...e.com>, Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>, linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org Subject: Re: remove generic_block_fiemap On Tue, Jul 20, 2021 at 07:02:10PM +0200, Mikulas Patocka wrote: > You can download a test HPFS partition here: > http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/test-hpfs-partition.gz looks like xfstests doesn't generally work on hpfs, and even if I tried i would be rather slow due to the lack of sparse files. So I tested fiemp against a few simple copied over files and it still works. There are some cases where the old code reported contiguous ranges as two extents while the new one doesn't, for rasons that are not quite clear to me: --- fiemap.old 2021-07-21 05:00:29.000000000 +0000 +++ fiemap.iomap 2021-07-21 04:57:20.000000000 +0000 @@ -1,3 +1,2 @@ dmesg: - 0: [0..66]: 133817..133883 - 1: [67..67]: 133884..133884 + 0: [0..67]: 133817..133884
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