X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/c5507b4d55f1f2989d3c108be387f62ed092ddc0..4aebf0f0da4a57204f568deed14661cb37b4ac30:/block/commit.c

diff --git a/block/commit.c b/block/commit.c
index 8189f079d2..8e672799af 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -43,27 +43,6 @@ typedef struct CommitBlockJob {
     char *backing_file_str;
 } CommitBlockJob;
 
-static int coroutine_fn commit_populate(BlockBackend *bs, BlockBackend *base,
-                                        int64_t offset, uint64_t bytes,
-                                        void *buf)
-{
-    int ret = 0;
-
-    assert(bytes < SIZE_MAX);
-
-    ret = blk_co_pread(bs, offset, bytes, buf, 0);
-    if (ret < 0) {
-        return ret;
-    }
-
-    ret = blk_co_pwrite(base, offset, bytes, buf, 0);
-    if (ret < 0) {
-        return ret;
-    }
-
-    return 0;
-}
-
 static int commit_prepare(Job *job)
 {
     CommitBlockJob *s = container_of(job, CommitBlockJob, common.job);
@@ -164,6 +143,7 @@ static int coroutine_fn commit_run(Job *job, Error **errp)
 
     for (offset = 0; offset < len; offset += n) {
         bool copy;
+        bool error_in_source = true;
 
         /* Note that even when no rate limit is applied we need to yield
          * with no pending I/O here so that bdrv_drain_all() returns.
@@ -178,11 +158,20 @@ static int coroutine_fn commit_run(Job *job, Error **errp)
         copy = (ret == 1);
         trace_commit_one_iteration(s, offset, n, ret);
         if (copy) {
-            ret = commit_populate(s->top, s->base, offset, n, buf);
+            assert(n < SIZE_MAX);
+
+            ret = blk_co_pread(s->top, offset, n, buf, 0);
+            if (ret >= 0) {
+                ret = blk_co_pwrite(s->base, offset, n, buf, 0);
+                if (ret < 0) {
+                    error_in_source = false;
+                }
+            }
         }
         if (ret < 0) {
             BlockErrorAction action =
-                block_job_error_action(&s->common, s->on_error, false, -ret);
+                block_job_error_action(&s->common, s->on_error,
+                                       error_in_source, -ret);
             if (action == BLOCK_ERROR_ACTION_REPORT) {
                 goto out;
             } else {