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| author | Bob Liu <bob.liu@oracle.com> | 2015-11-14 04:12:14 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2016-01-04 18:21:02 +0100 |
| commit | 28d949bcc28bbc2d206f9c3f69b892575e81c040 (patch) | |
| tree | 65d98aaf0411b69e56189d8a6b91431dfa0b74af /Documentation/dvb/faq.txt | |
| parent | xen/blkfront: split per device io_lock (diff) | |
| download | linux-28d949bcc28bbc2d206f9c3f69b892575e81c040.tar.xz linux-28d949bcc28bbc2d206f9c3f69b892575e81c040.zip | |
xen/blkfront: negotiate number of queues/rings to be used with backend
The max number of hardware queues for xen/blkfront is set by parameter
'max_queues'(default 4), while it is also capped by the max value that the
xen/blkback exposes through XenStore key 'multi-queue-max-queues'.
The negotiated number is the smaller one and would be written back to xenstore
as "multi-queue-num-queues", blkback needs to read this negotiated number.
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'Documentation/dvb/faq.txt')
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