This is a small step in preparation to mark bdrv_drained_begin() as
GRAPH_UNLOCKED. More concretely, it is in preparatoin to move the
drain out of bdrv_change_aio_context() and marking that function as
GRAPH_RDLOCK.
Signed-off-by: Fiona Ebner <f.eb...@proxmox.com>
---
New in v2.
Checkpatch seems to report a false positive here, but it's the same
for other callbacks in that header file:
ERROR: space prohibited between function name and open parenthesis '('
#86: FILE: include/block/block_int-common.h:986:
+ bool GRAPH_RDLOCK_PTR (*change_aio_ctx)(BdrvChild *child, AioContext *ctx,
block.c | 7 ++++---
block/block-backend.c | 6 +++---
blockjob.c | 6 +++---
include/block/block_int-common.h | 6 +++---
4 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/block.c b/block.c
index 7207978e53..01144c895e 100644
--- a/block.c
+++ b/block.c
@@ -1226,9 +1226,10 @@ static int bdrv_child_cb_inactivate(BdrvChild *child)
return 0;
}
-static bool bdrv_child_cb_change_aio_ctx(BdrvChild *child, AioContext *ctx,
- GHashTable *visited, Transaction
*tran,
- Error **errp)
+static bool GRAPH_RDLOCK
+bdrv_child_cb_change_aio_ctx(BdrvChild *child, AioContext *ctx,
+ GHashTable *visited, Transaction *tran,
+ Error **errp)
{
BlockDriverState *bs = child->opaque;
return bdrv_change_aio_context(bs, ctx, visited, tran, errp);
diff --git a/block/block-backend.c b/block/block-backend.c
index a402db13f2..6a6949edeb 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -136,9 +136,9 @@ static void blk_root_drained_end(BdrvChild *child);
static void blk_root_change_media(BdrvChild *child, bool load);
static void blk_root_resize(BdrvChild *child);
-static bool blk_root_change_aio_ctx(BdrvChild *child, AioContext *ctx,
- GHashTable *visited, Transaction *tran,
- Error **errp);
+static bool GRAPH_RDLOCK
+blk_root_change_aio_ctx(BdrvChild *child, AioContext *ctx, GHashTable *visited,
+ Transaction *tran, Error **errp);
static char *blk_root_get_parent_desc(BdrvChild *child)
{
diff --git a/blockjob.c b/blockjob.c
index 32007f31a9..34185d7715 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -144,9 +144,9 @@ static TransactionActionDrv change_child_job_context = {
.clean = g_free,
};
-static bool child_job_change_aio_ctx(BdrvChild *c, AioContext *ctx,
- GHashTable *visited, Transaction *tran,
- Error **errp)
+static bool GRAPH_RDLOCK
+child_job_change_aio_ctx(BdrvChild *c, AioContext *ctx, GHashTable *visited,
+ Transaction *tran, Error **errp)
{
BlockJob *job = c->opaque;
BdrvStateChildJobContext *s;
diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h
index 2982dd3118..37466c7841 100644
--- a/include/block/block_int-common.h
+++ b/include/block/block_int-common.h
@@ -983,9 +983,9 @@ struct BdrvChildClass {
bool backing_mask_protocol,
Error **errp);
- bool (*change_aio_ctx)(BdrvChild *child, AioContext *ctx,
- GHashTable *visited, Transaction *tran,
- Error **errp);
+ bool GRAPH_RDLOCK_PTR (*change_aio_ctx)(BdrvChild *child, AioContext *ctx,
+ GHashTable *visited,
+ Transaction *tran, Error **errp);
/*
* I/O API functions. These functions are thread-safe.
--
2.39.5
