dm: introduce dm_accept_partial_bio

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The function dm_accept_partial_bio allows the target to specify how many
sectors of the current bio it will process.  If the target only wants to
accept part of the bio, it calls dm_accept_partial_bio and the DM core
sends the rest of the data in next bio.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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Mikulas Patocka 2014-03-14 18:41:24 -04:00 • committed by Mike Snitzer

parent e0d6609a5f

commit 1dd40c3ecd

2 changed files with 53 additions and 8 deletions

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59

drivers/md/dm.c

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2

include/linux/device-mapper.h

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