[v1] Block layer patches

[PULL 16/50] copy-before-write: add missing coroutine_fn annotations

Kevin Wolf posted 50 patches 2 years, 5 months ago

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Maintainers: Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, John Snow <jsnow@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>, Fam Zheng <fam@euphon.net>, Ronnie Sahlberg <ronniesahlberg@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>, Peter Lieven <pl@kamp.de>, Eric Blake <eblake@redhat.com>, "Philippe Mathieu-Daudé" <f4bug@amsat.org>, "Denis V. Lunev" <den@openvz.org>, Alberto Garcia <berto@igalia.com>, Wen Congyang <wencongyang2@huawei.com>, Xie Changlong <xiechanglong.d@gmail.com>, Markus Armbruster <armbru@redhat.com>, Greg Kurz <groug@kaod.org>, Christian Schoenebeck <qemu_oss@crudebyte.com>, Juan Quintela <quintela@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>

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[PULL 16/50] copy-before-write: add missing coroutine_fn annotations

Posted by Kevin Wolf 2 years, 5 months ago

From: Paolo Bonzini <pbonzini@redhat.com>

Callers of coroutine_fn must be coroutine_fn themselves, or the call
must be within "if (qemu_in_coroutine())".  Apply coroutine_fn to
functions where this holds.

Reviewed-by: Alberto Faria <afaria@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220922084924.201610-16-pbonzini@redhat.com>
[kwolf: Fixed up coding style]
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 block/copy-before-write.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index c24b8dd117..afbdd04489 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -203,9 +203,9 @@ static int coroutine_fn cbw_co_flush(BlockDriverState *bs)
  * It's guaranteed that guest writes will not interact in the region until
  * cbw_snapshot_read_unlock() called.
  */
-static BlockReq *cbw_snapshot_read_lock(BlockDriverState *bs,
-                                        int64_t offset, int64_t bytes,
-                                        int64_t *pnum, BdrvChild **file)
+static coroutine_fn BlockReq *
+cbw_snapshot_read_lock(BlockDriverState *bs, int64_t offset, int64_t bytes,
+                       int64_t *pnum, BdrvChild **file)
 {
     BDRVCopyBeforeWriteState *s = bs->opaque;
     BlockReq *req = g_new(BlockReq, 1);
@@ -240,7 +240,8 @@ static BlockReq *cbw_snapshot_read_lock(BlockDriverState *bs,
     return req;
 }
 
-static void cbw_snapshot_read_unlock(BlockDriverState *bs, BlockReq *req)
+static coroutine_fn void
+cbw_snapshot_read_unlock(BlockDriverState *bs, BlockReq *req)
 {
     BDRVCopyBeforeWriteState *s = bs->opaque;
 
-- 
2.37.3