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| Started by | David Vrabel <david.vrabel@citrix.com> |
|---|---|
| First post | 2015-07-20 15:20 +0200 |
| Last post | 2015-07-20 15:20 +0200 |
| Articles | 1 — 1 participant |
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Re: [Xen-devel] [Patch V2] xen: release lock occasionally during ballooning David Vrabel <david.vrabel@citrix.com> - 2015-07-20 15:20 +0200
| From | David Vrabel <david.vrabel@citrix.com> |
|---|---|
| Date | 2015-07-20 15:20 +0200 |
| Subject | Re: [Xen-devel] [Patch V2] xen: release lock occasionally during ballooning |
| Message-ID | <pOj99-2gP-35@gated-at.bofh.it> |
On 20/07/15 12:49, Juergen Gross wrote: > When dom0 is being ballooned balloon_process() will hold the balloon > mutex until it is finished. This will block e.g. creation of new > domains as the device backends for the new domain need some > autoballooned pages for the ring buffers. > > Avoid this by releasing the balloon mutex from time to time during > ballooning. Adjust the comment above balloon_process() regarding > multiple instances of balloon_process(). > > Instead of open coding it, just use cond_resched(). Applied to for-linus-4.2, thanks. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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