[v5] block layer: split block APIs in global state and I/O

[PATCH v5 16/31] include/sysemu/blockdev.h: global state API

Emanuele Giuseppe Esposito posted 31 patches 4 years, 2 months ago

Diff against v2 v3 v4 v6 v7 v8
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Maintainers: Eduardo Habkost <ehabkost@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Markus Armbruster <armbru@redhat.com>, Juan Quintela <quintela@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Eric Blake <eblake@redhat.com>, John Snow <jsnow@redhat.com>, Fam Zheng <fam@euphon.net>, Hanna Reitz <hreitz@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

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[PATCH v5 16/31] include/sysemu/blockdev.h: global state API

Posted by Emanuele Giuseppe Esposito 4 years, 2 months ago

blockdev functions run always under the BQL lock.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
 include/sysemu/blockdev.h | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h
index c4b7b8b54e..e53eb91be6 100644
--- a/include/sysemu/blockdev.h
+++ b/include/sysemu/blockdev.h
@@ -13,9 +13,6 @@
 #include "block/block.h"
 #include "qemu/queue.h"
 
-void blockdev_mark_auto_del(BlockBackend *blk);
-void blockdev_auto_del(BlockBackend *blk);
-
 typedef enum {
     IF_DEFAULT = -1,            /* for use with drive_add() only */
     /*
@@ -40,6 +37,16 @@ struct DriveInfo {
     QTAILQ_ENTRY(DriveInfo) next;
 };
 
+/*
+ * Global state (GS) API. These functions run under the BQL lock.
+ *
+ * See include/block/block-global-state.h for more information about
+ * the GS API.
+ */
+
+void blockdev_mark_auto_del(BlockBackend *blk);
+void blockdev_auto_del(BlockBackend *blk);
+
 DriveInfo *blk_legacy_dinfo(BlockBackend *blk);
 DriveInfo *blk_set_legacy_dinfo(BlockBackend *blk, DriveInfo *dinfo);
 BlockBackend *blk_by_legacy_dinfo(DriveInfo *dinfo);
-- 
2.27.0