Re: [PATCH] qemu: add entry for balloon stat stat-disk-caches

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On Tue, Jun 05, 2018 at 01:41:02PM +0200, Tomáš Golembiovský wrote:
> Signed-off-by: Tomáš Golembiovský <tgolembi@xxxxxxxxxx>
> ---
>  include/libvirt/libvirt-domain.h | 9 ++++++++-
>  src/qemu/qemu_monitor_json.c     | 2 ++
>  2 files changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
> index da773b76cb..b96c018a90 100644
> --- a/include/libvirt/libvirt-domain.h
> +++ b/include/libvirt/libvirt-domain.h
> @@ -628,11 +628,18 @@ typedef enum {
>      /* Timestamp of the last update of statistics, in seconds. */
>      VIR_DOMAIN_MEMORY_STAT_LAST_UPDATE     = 9,
>
> +    /*
> +     * The amount of memory, in bytes, that can be quickly reclaimed without
> +     * additional I/O. Typically these pages are used for caching files from
> +     * disk.
> +     */
> +    VIR_DOMAIN_MEMORY_STAT_DISK_CACHES     = 10,
> +
>      /*
>       * The number of statistics supported by this version of the interface.
>       * To add new statistics, add them to the enum and increase this value.
>       */
> -    VIR_DOMAIN_MEMORY_STAT_NR              = 10,
> +    VIR_DOMAIN_MEMORY_STAT_NR              = 11,

this is a public header, this must never change, otherwise you break backwards
compatibility...

Erik

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