tree 664476bb4e7c05dcce3ad908363b482134c68429
parent bcddc3f01c9122882c8b9f12ab94a934e55aef97
author Jens Axboe <jens.axboe@oracle.com> 1253106834 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1253107132 +0200

writeback: separate starting of sync vs opportunistic writeback

bdi_start_writeback() is currently split into two paths, one for
WB_SYNC_NONE and one for WB_SYNC_ALL. Add bdi_sync_writeback()
for WB_SYNC_ALL writeback and let bdi_start_writeback() handle
only WB_SYNC_NONE.

Push down the writeback_control allocation and only accept the
parameters that make sense for each function. This cleans up
the API considerably.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>