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SubjectRe: [PATCH 16/17] block: use iomap for writes to block devices
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On 7/20/23 14:06, Christoph Hellwig wrote:
> On Fri, May 19, 2023 at 04:22:01PM +0200, Hannes Reinecke wrote:
>> I'm hitting this during booting:
>> [ 5.016324] <TASK>
>> [ 5.030256] iomap_iter+0x11a/0x350
>> [ 5.030264] iomap_readahead+0x1eb/0x2c0
>> [ 5.030272] read_pages+0x5d/0x220
>> [ 5.030279] page_cache_ra_unbounded+0x131/0x180
>> [ 5.030284] filemap_get_pages+0xff/0x5a0
>> [ 5.030292] filemap_read+0xca/0x320
>> [ 5.030296] ? aa_file_perm+0x126/0x500
>> [ 5.040216] ? touch_atime+0xc8/0x150
>> [ 5.040224] blkdev_read_iter+0xb0/0x150
>> [ 5.040228] vfs_read+0x226/0x2d0
>> [ 5.040234] ksys_read+0xa5/0xe0
>> [ 5.040238] do_syscall_64+0x5b/0x80
>>
>> Maybe we should consider this patch:
>
> As willy said this should be taken care of by the i_size check.
> Did you run with just this patch set or some of the large block
> size experiments on top which might change the variables?
>
> I'll repost the series today without any chances in the area, and
> if you can reproduce it with just that series we need to root
> cause it, so please send your kernel and VM config along for the
> next report.

I _think_ it's been resolve now; I've rewritten my patchset (and the
patches where it's based upon) several times now, so it might be a stale
issue now.

Eagerly awaiting your patchset.

Cheers,

Hannes

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