From: Max Reitz Date: Tue, 18 Nov 2014 11:21:16 +0000 (+0100) Subject: block: Add blk_add_close_notifier() for BB X-Git-Tag: v2.3.0-rc0~142^2~49 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c28b21f7c97ae4e2082536f36e97b1337e3d195;p=thirdparty%2Fqemu.git 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 --- diff --git a/block/block-backend.c b/block/block-backend.c index 7a7f6906122..ef16d7356a8 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 d9c1337e3f7..8871a021d0b 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);