Replace "iothread lock" with "BQL" in comments

The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL)
in their names. Update the code comments to use "BQL" instead of
"iothread lock".

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20240102153529.486531-5-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 11 insertions, 11 deletions

diff --git a/migration/block.c b/migration/block.c
index b731d7d778..8c6ebafacc 100644
--- a/migration/block.c
+++ b/migration/block.c
@@ -101,7 +101,7 @@ typedef struct BlkMigState {
     int prev_progress;
     int bulk_completed;
 
-    /* Lock must be taken _inside_ the iothread lock.  */
+    /* Lock must be taken _inside_ the BQL.  */
     QemuMutex lock;
 } BlkMigState;
 
@@ -117,7 +117,7 @@ static void blk_mig_unlock(void)
     qemu_mutex_unlock(&block_mig_state.lock);
 }
 
-/* Must run outside of the iothread lock during the bulk phase,
+/* Must run outside of the BQL during the bulk phase,
  * or the VM will stall.
  */
 
@@ -327,7 +327,7 @@ static int mig_save_device_bulk(QEMUFile *f, BlkMigDevState *bmds)
     return (bmds->cur_sector >= total_sectors);
 }
 
-/* Called with iothread lock taken.  */
+/* Called with the BQL taken.  */
 
 static int set_dirty_tracking(void)
 {
@@ -354,7 +354,7 @@ fail:
     return ret;
 }
 
-/* Called with iothread lock taken.  */
+/* Called with the BQL taken.  */
 
 static void unset_dirty_tracking(void)
 {
@@ -505,7 +505,7 @@ static void blk_mig_reset_dirty_cursor(void)
     }
 }
 
-/* Called with iothread lock taken.  */
+/* Called with the BQL taken.  */
 
 static int mig_save_device_dirty(QEMUFile *f, BlkMigDevState *bmds,
                                  int is_async)
@@ -587,7 +587,7 @@ error:
     return ret;
 }
 
-/* Called with iothread lock taken.
+/* Called with the BQL taken.
  *
  * return value:
  * 0: too much data for max_downtime
@@ -649,7 +649,7 @@ static int flush_blks(QEMUFile *f)
     return ret;
 }
 
-/* Called with iothread lock taken.  */
+/* Called with the BQL taken.  */
 
 static int64_t get_remaining_dirty(void)
 {
@@ -667,7 +667,7 @@ static int64_t get_remaining_dirty(void)
 
 
 
-/* Called with iothread lock taken.  */
+/* Called with the BQL taken.  */
 static void block_migration_cleanup_bmds(void)
 {
     BlkMigDevState *bmds;
@@ -690,7 +690,7 @@ static void block_migration_cleanup_bmds(void)
     }
 }
 
-/* Called with iothread lock taken.  */
+/* Called with the BQL taken.  */
 static void block_migration_cleanup(void *opaque)
 {
     BlkMigBlock *blk;
@@ -767,7 +767,7 @@ static int block_save_iterate(QEMUFile *f, void *opaque)
             }
             ret = 0;
         } else {
-            /* Always called with iothread lock taken for
+            /* Always called with the BQL taken for
              * simplicity, block_save_complete also calls it.
              */
             bql_lock();
@@ -795,7 +795,7 @@ static int block_save_iterate(QEMUFile *f, void *opaque)
     return (delta_bytes > 0);
 }
 
-/* Called with iothread lock taken.  */
+/* Called with the BQL taken.  */
 
 static int block_save_complete(QEMUFile *f, void *opaque)
 {