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| author | Mike Snitzer <snitzer@redhat.com> | 2015-02-24 11:03:22 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-04-15 12:10:12 -0400 |
| commit | 9a0e609e3fd8a95c96629b9fbde6b8c5b9a1456a (patch) | |
| tree | f16b43f956f54b0a1c214a8bba840b85217ed963 /Documentation/blockdev/mflash.txt | |
| parent | ff36ab34583ae23250a4bf39805d69771e7e0131 (diff) | |
| download | blackbird-obmc-linux-9a0e609e3fd8a95c96629b9fbde6b8c5b9a1456a.tar.gz blackbird-obmc-linux-9a0e609e3fd8a95c96629b9fbde6b8c5b9a1456a.zip | |
dm: only run the queue on completion if congested or no requests pending
On really fast storage it can be beneficial to delay running the
request_queue to allow the elevator more opportunity to merge requests.
Otherwise, it has been observed that requests are being sent to
q->request_fn much quicker than is ideal on IOPS-bound backends.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'Documentation/blockdev/mflash.txt')
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