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rbd: Add support for bdrv_invalidate_cache 

This fixes Ceph issue 2467: ttp://tracker.ceph.com/issues/2467

[Dropped return r in void function as suggested by Josh Durgin
<josh.durgin@inktank.com>.
--Stefan]

Signed-off-by: Adam Crume <adamcrume@gmail.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1412880272-3154-1-git-send-email-adamcrume@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
master
Adam Crume 2014-10-09 11:44:32 -07:00 committed by Stefan Hajnoczi
parent da725d0b0e
commit be21788495
1 changed files with 15 additions and 0 deletions
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15
block/rbd.c
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@ -887,6 +887,18 @@ static BlockAIOCB* qemu_rbd_aio_discard(BlockDriverState *bs,
}
#endif
#ifdef LIBRBD_SUPPORTS_INVALIDATE
static void qemu_rbd_invalidate_cache(BlockDriverState *bs,
Error **errp)
{
BDRVRBDState *s = bs->opaque;
int r = rbd_invalidate_cache(s->image);
if (r < 0) {
error_setg_errno(errp, -r, "Failed to invalidate the cache");
}
}
#endif
static QemuOptsList qemu_rbd_create_opts = {
.name = "rbd-create-opts",
.head = QTAILQ_HEAD_INITIALIZER(qemu_rbd_create_opts.head),
@ -936,6 +948,9 @@ static BlockDriver bdrv_rbd = {
.bdrv_snapshot_delete = qemu_rbd_snap_remove,
.bdrv_snapshot_list = qemu_rbd_snap_list,
.bdrv_snapshot_goto = qemu_rbd_snap_rollback,
#ifdef LIBRBD_SUPPORTS_INVALIDATE
.bdrv_invalidate_cache = qemu_rbd_invalidate_cache,
#endif
};
static void bdrv_rbd_init(void)