Mikulas Patocka 4929630901
dm thin: split discards on block boundary ...
This patch sets the variable "ti->split_discard_requests" for the dm thin
target so that device mapper core splits discard requests on a block
boundary.
Consequently, a discard request that spans multiple blocks is never sent
to dm-thin. The patch also removes some code in process_discard that
deals with discards that span multiple blocks.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com >
Signed-off-by: Mike Snitzer <snitzer@redhat.com >
Signed-off-by: Alasdair G Kergon <agk@redhat.com >
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4929630901