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Diffstat (limited to 'block/graph-lock.c')
-rw-r--r--block/graph-lock.c44
1 files changed, 2 insertions, 42 deletions
diff --git a/block/graph-lock.c b/block/graph-lock.c
index 079e878d9b..c81162b147 100644
--- a/block/graph-lock.c
+++ b/block/graph-lock.c
@@ -106,27 +106,12 @@ static uint32_t reader_count(void)
return rd;
}
-void no_coroutine_fn bdrv_graph_wrlock(BlockDriverState *bs)
+void no_coroutine_fn bdrv_graph_wrlock(void)
{
- AioContext *ctx = NULL;
-
GLOBAL_STATE_CODE();
assert(!qatomic_read(&has_writer));
assert(!qemu_in_coroutine());
- /*
- * Release only non-mainloop AioContext. The mainloop often relies on the
- * BQL and doesn't lock the main AioContext before doing things.
- */
- if (bs) {
- ctx = bdrv_get_aio_context(bs);
- if (ctx != qemu_get_aio_context()) {
- aio_context_release(ctx);
- } else {
- ctx = NULL;
- }
- }
-
/* Make sure that constantly arriving new I/O doesn't cause starvation */
bdrv_drain_all_begin_nopoll();
@@ -155,27 +140,13 @@ void no_coroutine_fn bdrv_graph_wrlock(BlockDriverState *bs)
} while (reader_count() >= 1);
bdrv_drain_all_end();
-
- if (ctx) {
- aio_context_acquire(bdrv_get_aio_context(bs));
- }
}
-void no_coroutine_fn bdrv_graph_wrunlock_ctx(AioContext *ctx)
+void no_coroutine_fn bdrv_graph_wrunlock(void)
{
GLOBAL_STATE_CODE();
assert(qatomic_read(&has_writer));
- /*
- * Release only non-mainloop AioContext. The mainloop often relies on the
- * BQL and doesn't lock the main AioContext before doing things.
- */
- if (ctx && ctx != qemu_get_aio_context()) {
- aio_context_release(ctx);
- } else {
- ctx = NULL;
- }
-
WITH_QEMU_LOCK_GUARD(&aio_context_list_lock) {
/*
* No need for memory barriers, this works in pair with
@@ -197,17 +168,6 @@ void no_coroutine_fn bdrv_graph_wrunlock_ctx(AioContext *ctx)
* progress.
*/
aio_bh_poll(qemu_get_aio_context());
-
- if (ctx) {
- aio_context_acquire(ctx);
- }
-}
-
-void no_coroutine_fn bdrv_graph_wrunlock(BlockDriverState *bs)
-{
- AioContext *ctx = bs ? bdrv_get_aio_context(bs) : NULL;
-
- bdrv_graph_wrunlock_ctx(ctx);
}
void coroutine_fn bdrv_graph_co_rdlock(void)