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linux-next/fs/zonefs
Andreas Gruenbacher 4fdccaa0d1 iomap: Add done_before argument to iomap_dio_rw
Add a done_before argument to iomap_dio_rw that indicates how much of
the request has already been transferred.  When the request succeeds, we
report that done_before additional bytes were tranferred.  This is
useful for finishing a request asynchronously when part of the request
has already been completed synchronously.

We'll use that to allow iomap_dio_rw to be used with page faults
disabled: when a page fault occurs while submitting a request, we
synchronously complete the part of the request that has already been
submitted.  The caller can then take care of the page fault and call
iomap_dio_rw again for the rest of the request, passing in the number of
bytes already tranferred.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
2021-10-24 15:26:05 +02:00
..
Kconfig zonefs: select CONFIG_CRC32 2021-01-04 09:06:42 +09:00
Makefile zonefs: add tracepoints for file operations 2021-02-16 09:59:54 +09:00
super.c iomap: Add done_before argument to iomap_dio_rw 2021-10-24 15:26:05 +02:00
trace.h zonefs: add tracepoints for file operations 2021-02-16 09:59:54 +09:00
zonefs.h zonefs: Convert to using invalidate_lock 2021-07-13 14:29:01 +02:00