cryptospore / rpms / qemu-kvm

Forked from rpms/qemu-kvm 2 years ago
Clone
26ba25
From 7d49650cc825e639180ba1d7580e15cf56fb21da Mon Sep 17 00:00:00 2001
26ba25
From: Kevin Wolf <kwolf@redhat.com>
26ba25
Date: Tue, 26 Jun 2018 09:48:07 +0200
26ba25
Subject: [PATCH 099/268] job: Add Job.aio_context
26ba25
26ba25
RH-Author: Kevin Wolf <kwolf@redhat.com>
26ba25
Message-id: <20180626094856.6924-25-kwolf@redhat.com>
26ba25
Patchwork-id: 81075
26ba25
O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH v2 24/73] job: Add Job.aio_context
26ba25
Bugzilla: 1513543
26ba25
RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
26ba25
RH-Acked-by: Max Reitz <mreitz@redhat.com>
26ba25
RH-Acked-by: Fam Zheng <famz@redhat.com>
26ba25
26ba25
When block jobs need an AioContext, they just take it from their main
26ba25
block node. Generic jobs don't have a main block node, so we need to
26ba25
assign them an AioContext explicitly.
26ba25
26ba25
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
26ba25
Reviewed-by: Max Reitz <mreitz@redhat.com>
26ba25
Reviewed-by: John Snow <jsnow@redhat.com>
26ba25
(cherry picked from commit 08be6fe26f6c76d900fc987f58d322b94bc4e248)
26ba25
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
26ba25
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
26ba25
---
26ba25
 blockjob.c         | 5 ++++-
26ba25
 include/qemu/job.h | 7 ++++++-
26ba25
 job.c              | 4 +++-
26ba25
 3 files changed, 13 insertions(+), 3 deletions(-)
26ba25
26ba25
diff --git a/blockjob.c b/blockjob.c
26ba25
index f4f9956..0a0b1c4 100644
26ba25
--- a/blockjob.c
26ba25
+++ b/blockjob.c
26ba25
@@ -216,6 +216,7 @@ static void block_job_attached_aio_context(AioContext *new_context,
26ba25
 {
26ba25
     BlockJob *job = opaque;
26ba25
 
26ba25
+    job->job.aio_context = new_context;
26ba25
     if (job->driver->attached_aio_context) {
26ba25
         job->driver->attached_aio_context(job, new_context);
26ba25
     }
26ba25
@@ -247,6 +248,7 @@ static void block_job_detach_aio_context(void *opaque)
26ba25
         block_job_drain(job);
26ba25
     }
26ba25
 
26ba25
+    job->job.aio_context = NULL;
26ba25
     job_unref(&job->job);
26ba25
 }
26ba25
 
26ba25
@@ -899,7 +901,8 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver,
26ba25
         return NULL;
26ba25
     }
26ba25
 
26ba25
-    job = job_create(job_id, &driver->job_driver, errp);
26ba25
+    job = job_create(job_id, &driver->job_driver, blk_get_aio_context(blk),
26ba25
+                     errp);
26ba25
     if (job == NULL) {
26ba25
         blk_unref(blk);
26ba25
         return NULL;
26ba25
diff --git a/include/qemu/job.h b/include/qemu/job.h
26ba25
index 5dfbec5..01e083f 100644
26ba25
--- a/include/qemu/job.h
26ba25
+++ b/include/qemu/job.h
26ba25
@@ -47,6 +47,9 @@ typedef struct Job {
26ba25
     /** Current state; See @JobStatus for details. */
26ba25
     JobStatus status;
26ba25
 
26ba25
+    /** AioContext to run the job coroutine in */
26ba25
+    AioContext *aio_context;
26ba25
+
26ba25
     /**
26ba25
      * Set to true if the job should cancel itself.  The flag must
26ba25
      * always be tested just before toggling the busy flag from false
26ba25
@@ -79,9 +82,11 @@ struct JobDriver {
26ba25
  *
26ba25
  * @job_id: The id of the newly-created job, or %NULL for internal jobs
26ba25
  * @driver: The class object for the newly-created job.
26ba25
+ * @ctx: The AioContext to run the job coroutine in.
26ba25
  * @errp: Error object.
26ba25
  */
26ba25
-void *job_create(const char *job_id, const JobDriver *driver, Error **errp);
26ba25
+void *job_create(const char *job_id, const JobDriver *driver, AioContext *ctx,
26ba25
+                 Error **errp);
26ba25
 
26ba25
 /**
26ba25
  * Add a reference to Job refcnt, it will be decreased with job_unref, and then
26ba25
diff --git a/job.c b/job.c
26ba25
index 1abca6a..01074d0 100644
26ba25
--- a/job.c
26ba25
+++ b/job.c
26ba25
@@ -121,7 +121,8 @@ Job *job_get(const char *id)
26ba25
     return NULL;
26ba25
 }
26ba25
 
26ba25
-void *job_create(const char *job_id, const JobDriver *driver, Error **errp)
26ba25
+void *job_create(const char *job_id, const JobDriver *driver, AioContext *ctx,
26ba25
+                 Error **errp)
26ba25
 {
26ba25
     Job *job;
26ba25
 
26ba25
@@ -140,6 +141,7 @@ void *job_create(const char *job_id, const JobDriver *driver, Error **errp)
26ba25
     job->driver        = driver;
26ba25
     job->id            = g_strdup(job_id);
26ba25
     job->refcnt        = 1;
26ba25
+    job->aio_context   = ctx;
26ba25
 
26ba25
     job_state_transition(job, JOB_STATUS_CREATED);
26ba25
 
26ba25
-- 
26ba25
1.8.3.1
26ba25