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| author | Joe Thornber <ejt@redhat.com> | 2014-10-06 18:27:26 +0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2014-11-10 23:25:26 +0300 |
| commit | 4646015d7e4ca5a4dc19427fb0a0aeff15a4fd91 (patch) | |
| tree | 5afe82e874f9eff6eeb70e77db458b22dcea3307 /drivers/md/persistent-data/dm-transaction-manager.h | |
| parent | e5cfc69a513cdc9d9e753c5ce07f0cc6b496bfd3 (diff) | |
| download | linux-4646015d7e4ca5a4dc19427fb0a0aeff15a4fd91.tar.xz | |
dm transaction manager: add support for prefetching blocks of metadata
Introduce the dm_tm_issue_prefetches interface. If you're using a
non-blocking clone the tm will build up a list of requested blocks that
weren't in core. dm_tm_issue_prefetches will request those blocks to be
prefetched.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/persistent-data/dm-transaction-manager.h')
| -rw-r--r-- | drivers/md/persistent-data/dm-transaction-manager.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/persistent-data/dm-transaction-manager.h b/drivers/md/persistent-data/dm-transaction-manager.h index 2772ed2a781a..2e0d4d66fb1b 100644 --- a/drivers/md/persistent-data/dm-transaction-manager.h +++ b/drivers/md/persistent-data/dm-transaction-manager.h @@ -109,6 +109,13 @@ int dm_tm_ref(struct dm_transaction_manager *tm, dm_block_t b, struct dm_block_manager *dm_tm_get_bm(struct dm_transaction_manager *tm); /* + * If you're using a non-blocking clone the tm will build up a list of + * requested blocks that weren't in core. This call will request those + * blocks to be prefetched. + */ +void dm_tm_issue_prefetches(struct dm_transaction_manager *tm); + +/* * A little utility that ties the knot by producing a transaction manager * that has a space map managed by the transaction manager... * |