|
 |
1bdc94 |
From eca4127792a09e2bf10fdabc5780a2294a2d07da Mon Sep 17 00:00:00 2001
|
|
|
1bdc94 |
From: John Snow <jsnow@redhat.com>
|
|
|
1bdc94 |
Date: Mon, 10 Sep 2018 18:17:54 +0200
|
|
|
1bdc94 |
Subject: [PATCH 16/25] block/stream: refactor stream to use job callbacks
|
|
|
1bdc94 |
|
|
|
1bdc94 |
RH-Author: John Snow <jsnow@redhat.com>
|
|
|
1bdc94 |
Message-id: <20180910181803.11781-17-jsnow@redhat.com>
|
|
|
1bdc94 |
Patchwork-id: 82093
|
|
|
1bdc94 |
O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 16/25] block/stream: refactor stream to use job callbacks
|
|
|
1bdc94 |
Bugzilla: 1626061
|
|
|
1bdc94 |
RH-Acked-by: Max Reitz <mreitz@redhat.com>
|
|
|
1bdc94 |
RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
|
|
|
1bdc94 |
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
|
|
|
1bdc94 |
|
|
|
1bdc94 |
Signed-off-by: John Snow <jsnow@redhat.com>
|
|
|
1bdc94 |
Reviewed-by: Max Reitz <mreitz@redhat.com>
|
|
|
1bdc94 |
Message-id: 20180906130225.5118-8-jsnow@redhat.com
|
|
|
1bdc94 |
Reviewed-by: Jeff Cody <jcody@redhat.com>
|
|
|
1bdc94 |
Signed-off-by: Max Reitz <mreitz@redhat.com>
|
|
|
1bdc94 |
(cherry picked from commit 98ebc93c760372630ab181efbc2302f3b6919cd8)
|
|
|
1bdc94 |
Signed-off-by: John Snow <jsnow@redhat.com>
|
|
|
1bdc94 |
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
1bdc94 |
---
|
|
|
1bdc94 |
block/stream.c | 23 +++++++++++++++--------
|
|
|
1bdc94 |
1 file changed, 15 insertions(+), 8 deletions(-)
|
|
|
1bdc94 |
|
|
|
1bdc94 |
diff --git a/block/stream.c b/block/stream.c
|
|
|
1bdc94 |
index 700eb23..81a7ec8 100644
|
|
|
1bdc94 |
--- a/block/stream.c
|
|
|
1bdc94 |
+++ b/block/stream.c
|
|
|
1bdc94 |
@@ -54,16 +54,16 @@ static int coroutine_fn stream_populate(BlockBackend *blk,
|
|
|
1bdc94 |
return blk_co_preadv(blk, offset, qiov.size, &qiov, BDRV_REQ_COPY_ON_READ);
|
|
|
1bdc94 |
}
|
|
|
1bdc94 |
|
|
|
1bdc94 |
-static void stream_exit(Job *job)
|
|
|
1bdc94 |
+static int stream_prepare(Job *job)
|
|
|
1bdc94 |
{
|
|
|
1bdc94 |
StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
|
|
|
1bdc94 |
BlockJob *bjob = &s->common;
|
|
|
1bdc94 |
BlockDriverState *bs = blk_bs(bjob->blk);
|
|
|
1bdc94 |
BlockDriverState *base = s->base;
|
|
|
1bdc94 |
Error *local_err = NULL;
|
|
|
1bdc94 |
- int ret = job->ret;
|
|
|
1bdc94 |
+ int ret = 0;
|
|
|
1bdc94 |
|
|
|
1bdc94 |
- if (!job_is_cancelled(job) && bs->backing && ret == 0) {
|
|
|
1bdc94 |
+ if (bs->backing) {
|
|
|
1bdc94 |
const char *base_id = NULL, *base_fmt = NULL;
|
|
|
1bdc94 |
if (base) {
|
|
|
1bdc94 |
base_id = s->backing_file_str;
|
|
|
1bdc94 |
@@ -75,12 +75,19 @@ static void stream_exit(Job *job)
|
|
|
1bdc94 |
bdrv_set_backing_hd(bs, base, &local_err);
|
|
|
1bdc94 |
if (local_err) {
|
|
|
1bdc94 |
error_report_err(local_err);
|
|
|
1bdc94 |
- ret = -EPERM;
|
|
|
1bdc94 |
- goto out;
|
|
|
1bdc94 |
+ return -EPERM;
|
|
|
1bdc94 |
}
|
|
|
1bdc94 |
}
|
|
|
1bdc94 |
|
|
|
1bdc94 |
-out:
|
|
|
1bdc94 |
+ return ret;
|
|
|
1bdc94 |
+}
|
|
|
1bdc94 |
+
|
|
|
1bdc94 |
+static void stream_clean(Job *job)
|
|
|
1bdc94 |
+{
|
|
|
1bdc94 |
+ StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
|
|
|
1bdc94 |
+ BlockJob *bjob = &s->common;
|
|
|
1bdc94 |
+ BlockDriverState *bs = blk_bs(bjob->blk);
|
|
|
1bdc94 |
+
|
|
|
1bdc94 |
/* Reopen the image back in read-only mode if necessary */
|
|
|
1bdc94 |
if (s->bs_flags != bdrv_get_flags(bs)) {
|
|
|
1bdc94 |
/* Give up write permissions before making it read-only */
|
|
|
1bdc94 |
@@ -89,7 +96,6 @@ out:
|
|
|
1bdc94 |
}
|
|
|
1bdc94 |
|
|
|
1bdc94 |
g_free(s->backing_file_str);
|
|
|
1bdc94 |
- job->ret = ret;
|
|
|
1bdc94 |
}
|
|
|
1bdc94 |
|
|
|
1bdc94 |
static int coroutine_fn stream_run(Job *job, Error **errp)
|
|
|
1bdc94 |
@@ -206,7 +212,8 @@ static const BlockJobDriver stream_job_driver = {
|
|
|
1bdc94 |
.job_type = JOB_TYPE_STREAM,
|
|
|
1bdc94 |
.free = block_job_free,
|
|
|
1bdc94 |
.run = stream_run,
|
|
|
1bdc94 |
- .exit = stream_exit,
|
|
|
1bdc94 |
+ .prepare = stream_prepare,
|
|
|
1bdc94 |
+ .clean = stream_clean,
|
|
|
1bdc94 |
.user_resume = block_job_user_resume,
|
|
|
1bdc94 |
.drain = block_job_drain,
|
|
|
1bdc94 |
},
|
|
|
1bdc94 |
--
|
|
|
1bdc94 |
1.8.3.1
|
|
|
1bdc94 |
|