block/iscsi: Document why we use raw malloc()

In block/iscsi.c we use a raw malloc() call, which is unusual
given the project standard is to use the glib memory allocation
functions. Document why we do so, to avoid it being converted
to g_malloc() by mistake.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20230727150705.2664464-1-peter.maydell@linaro.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

diff --git a/block/iscsi.c b/block/iscsi.c
index 34f97ab64605b7ea1090f118680071ff67801483..5640c8b5657782f4bf811ea471032ba32c04b357 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",