tree cfeeb4f0a151b440293da593c723e9982368a58f
parent 06a426cee9b35505aeb7516a67bd26496ca7ed08
author Mike Snitzer <snitzer@redhat.com> 1281582850 +0100
committer Alasdair G Kergon <agk@redhat.com> 1281582850 +0100

dm: factor out max_io_len_target_boundary

Split max_io_len_target_boundary out of max_io_len so that the discard
support can make use of it without duplicating max_io_len code.

Avoiding max_io_len's split_io logic enables DM's discard support to
submit the entire discard request to a target.  But discards must still
be split on target boundaries.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>