From 2c28b21f7c97ae4e2082536f36e97b1337e3d195 Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Tue, 18 Nov 2014 12:21:16 +0100 Subject: [PATCH] block: Add blk_add_close_notifier() for BB Adding something like a "delete notifier" to a BlockBackend would not make much sense, because whoever is interested in registering there will probably hold a reference to that BlockBackend; therefore, the notifier will never be called (or only when the notifiee already relinquished its reference and thus most probably is no longer interested in that notification). Therefore, this patch just passes through the close notifier interface of the root BDS. This will be called when the device is ejected, for instance, and therefore does make sense. Signed-off-by: Max Reitz Reviewed-by: Paolo Bonzini Message-id: 1416309679-333-4-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- block/block-backend.c | 5 +++++ include/sysemu/block-backend.h | 1 + 2 files changed, 6 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index 7a7f690612..ef16d7356a 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -642,6 +642,11 @@ void blk_remove_aio_context_notifier(BlockBackend *blk, detach_aio_context, opaque); } +void blk_add_close_notifier(BlockBackend *blk, Notifier *notify) +{ + bdrv_add_close_notifier(blk->bs, notify); +} + void blk_io_plug(BlockBackend *blk) { bdrv_io_plug(blk->bs); diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index d9c1337e3f..8871a021d0 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -143,6 +143,7 @@ void blk_remove_aio_context_notifier(BlockBackend *blk, void *), void (*detach_aio_context)(void *), void *opaque); +void blk_add_close_notifier(BlockBackend *blk, Notifier *notify); void blk_io_plug(BlockBackend *blk); void blk_io_unplug(BlockBackend *blk); BlockAcctStats *blk_get_stats(BlockBackend *blk);