| From | David Howells <> | Subject | Re: [PATCH v13 03/12] splice: Do splice read from a buffered file without using ITER_PIPE | Date | Mon, 13 Feb 2023 22:43:12 +0000 |
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Guenter Roeck <linux@roeck-us.net> wrote:
> [ 4.660118] PC is at 0x0 > [ 4.660248] LR is at filemap_read_folio+0x17/0x4e
Do you know what the filesystem is that's being read from?
I think the problem is that there are a few filesystems/drivers that call generic_file_splice_read() but don't have a ->read_folio(). Now most of these can be made to call direct_splice_read() instead, leaving just coda, overlayfs and shmem.
Coda and overlayfs can be made to pass the request down a layer. I'm about to look into shmem.
David
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