linux/Documentation/block/writeback_cache_control.txt, branch v4.14

block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH

2016-06-07T19:41:38Z

To avoid confusion between REQ_OP_FLUSH, which is handled by request_fn drivers, and upper layers requesting the block layer perform a flush sequence along with possibly a WRITE, this patch renames REQ_FLUSH to REQ_PREFLUSH. Signed-off-by: Mike Christie Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

block, drivers: add REQ_OP_FLUSH operation

2016-06-07T19:41:38Z

This adds a REQ_OP_FLUSH operation that is sent to request_fn based drivers by the block layer's flush code, instead of sending requests with the request->cmd_flags REQ_FLUSH bit set. Signed-off-by: Mike Christie Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

block: kill blk_queue_flush()

2016-04-12T22:00:39Z

We don't have any drivers left using it, so kill it off. Update documentation to use the newer blk_queue_write_cache(). Signed-off-by: Jens Axboe Reviewed-by: Christoph Hellwig

block: update documentation for REQ_FLUSH / REQ_FUA

2010-09-10T10:35:37Z

Signed-off-by: Christoph Hellwig Signed-off-by: Tejun Heo Signed-off-by: Jens Axboe