Re: [PATCH v2 4/4] conf: Use correct type for balloon stats period

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On Mon, Mar 16, 2015 at 02:10:35PM +0100, Erik Skultety wrote:


On 03/13/2015 05:17 PM, Martin Kletzander wrote:
We're parsing memballoon status period as unsigned int, but when we're
trying to set it, both we and qemu use signed int.  That means large
values will get wrapped around to negative one resulting in error.
Basically the same problem as commit e3a7b874 was dealing with when
updating live domain.

QEMU changed the accepted value to int64 in commit 1f9296b5, but even
values as INT_MAX don't make sense since the value passed means seconds.
Hence adding capability flag for this change isn't worth it.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1140958

Signed-off-by: Luyao Huang <lhuang@xxxxxxxxxx>
Signed-off-by: Martin Kletzander <mkletzan@xxxxxxxxxx>
---
 docs/formatdomain.html.in | 2 ++
 src/conf/domain_conf.c    | 9 +++++++--
 src/conf/domain_conf.h    | 2 +-
 src/qemu/qemu_process.c   | 2 +-
 4 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 40e2b29..7a11cc7 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -5630,6 +5630,8 @@ qemu-kvm -net nic,model=? /dev/null
           only be made to the active guest.
           If the QEMU driver is not at the right
           revision, the attempt to set the period will fail.
+          Large values might be ignored, but this only affects
+          non-sensical numbers (i.e. many years).
           <span class='since'>Since 1.1.1, requires QEMU 1.5</span>
         </p>
       </dd>

Just a nitpick, I'd probably avoid word construction non-sensical in our
docs (it's not even correct --> nonsensical) and simplify this to "Large
values (i.e. many years) might be ignored."


In that case, I changed it to 'e.g.', adjusted the column width and
pushed.  Thanks for the reviews.

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