linux

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Andreas Gruenbacher d3b744791b iomap: Add done_before argument to iomap_dio_rw

commit 4fdccaa0d184c202f98d73b24e3ec8eeee88ab8d upstream

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>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-05-01 17:22:32 +02:00

compress.h

erofs: clean up file headers & footers

2021-06-08 00:41:24 +08:00

data.c

iomap: Add done_before argument to iomap_dio_rw

2022-05-01 17:22:32 +02:00

decompressor.c

erofs: don't trigger WARN() when decompression fails

2021-11-18 19:16:21 +01:00

dir.c

erofs: clean up file headers & footers