| commit | 762380ad9322951cea4ce9d24864265f9c66a916 | [log] [tgz] |
|---|---|---|
| author | Jens Axboe <axboe@fb.com> | Thu Jun 05 13:38:39 2014 -0600 |
| committer | Jens Axboe <axboe@fb.com> | Thu Jun 05 13:38:39 2014 -0600 |
| tree | 9ec3fe551583dcb9243d02a9728511e99216dcdc | |
| parent | 046f153343e33dcad1be7f6249ea6ff1c6fd9b58 [diff] |
block: add notion of a chunk size for request merging Some drivers have different limits on what size a request should optimally be, depending on the offset of the request. Similar to dividing a device into chunks. Add a setting that allows the driver to inform the block layer of such a chunk size. The block layer will then prevent merging across the chunks. This is needed to optimally support NVMe with a non-zero stripe size. Signed-off-by: Jens Axboe <axboe@fb.com>