block: Mark bdrv_filter_bs() and callers GRAPH_RDLOCK

[mirror_qemu.git] / block / iscsi.c

diff --git a/block/iscsi.c b/block/iscsi.c
index 34f97ab64605b7ea1090f118680071ff67801483..2ff14b74724d61a2d8325662b70c1b9729a8a187 100644 (file)
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1058,6 +1058,7 @@ static BlockAIOCB *iscsi_aio_ioctl(BlockDriverState *bs,
         return NULL;
     }
 
+    /* Must use malloc(): this is freed via scsi_free_scsi_task() */
     acb->task = malloc(sizeof(struct scsi_task));
     if (acb->task == NULL) {
         error_report("iSCSI: Failed to allocate task for scsi command. %s",
@@ -1924,7 +1925,9 @@ static int iscsi_open(BlockDriverState *bs, QDict *options, int flags,
     /* Check the write protect flag of the LUN if we want to write */
     if (iscsilun->type == TYPE_DISK && (flags & BDRV_O_RDWR) &&
         iscsilun->write_protected) {
+        bdrv_graph_rdlock_main_loop();
         ret = bdrv_apply_auto_read_only(bs, "LUN is write protected", errp);
+        bdrv_graph_rdunlock_main_loop();
         if (ret < 0) {
             goto out;
         }