Attachment 573718 Details for Bug 807894 – patch to fix the bug, RHEL version

[patch] patch to fix the bug, RHEL version

0001-block.patch (text/plain), 2.68 KB, created by Paolo Bonzini on 2012-03-29 15:56:26 UTC

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Creator: Paolo Bonzini

Created: 2012-03-29 15:56:26 UTC

Size: 2.68 KB

patch

obsolete

>From 1ac534077e121c12d56400dfaffb1e909b0128e8 Mon Sep 17 00:00:00 2001
>From: Paolo Bonzini <pbonzini@redhat.com>
>Date: Thu, 29 Mar 2012 17:45:13 +0200
>Subject: [RHEL 6.3 qemu-kvm PATCH] block
>
>---
> block.c        |   14 ++++++++++++++
> block/stream.c |    4 +++-
> block_int.h    |    2 ++
> 3 files changed, 19 insertions(+), 1 deletions(-)
>
>diff --git a/block.c b/block.c
>index e3c4f64..348326f 100644
>--- a/block.c
>+++ b/block.c
>@@ -684,6 +684,9 @@ unlink_and_fail:
> void bdrv_close(BlockDriverState *bs)
> {
>     if (bs->drv) {
>+        if (bs->job) {
>+            block_job_cancel_sync(bs->job);
>+        }
>         if (bs == bs_snapshots) {
>             bs_snapshots = NULL;
>         }
>@@ -3695,3 +3698,14 @@ bool block_job_is_cancelled(BlockJob *job)
> {
>     return job->cancelled;
> }
>+
>+void block_job_cancel_sync(BlockJob *job)
>+{
>+    BlockDriverState *bs = job->bs;
>+
>+    assert(bs->job == job);
>+    block_job_cancel(job);
>+    while (bs->job != NULL && bs->job->busy) {
>+        qemu_aio_wait();
>+    }
>+}
>diff --git a/block/stream.c b/block/stream.c
>index 7f20ba5..063aa80 100644
>--- a/block/stream.c
>+++ b/block/stream.c
>@@ -175,7 +175,7 @@ retry:
>             break;
>         }
> 
>-
>+        s->common.busy = true;
>         if (base) {
>             ret = is_allocated_base(bs, base, sector_num,
>                                     STREAM_BUFFER_SIZE / BDRV_SECTOR_SIZE, &n);
>@@ -189,6 +189,7 @@ retry:
>             if (s->common.speed) {
>                 uint64_t delay_ms = ratelimit_calculate_delay(&s->limit, n);
>                 if (delay_ms > 0) {
>+                    s->common.busy = false;
>                     co_sleep(rt_clock, delay_ms);
> 
>                     /* Recheck cancellation and that sectors are unallocated */
>@@ -208,6 +209,7 @@ retry:
>         /* Note that even when no rate limit is applied we need to yield
>          * with no pending I/O here so that qemu_aio_flush() returns.
>          */
>+        s->common.busy = false;
>         co_sleep(rt_clock, 0);
>     }
> 
>diff --git a/block_int.h b/block_int.h
>index fcfe7d0..e195ffe 100644
>--- a/block_int.h
>+++ b/block_int.h
>@@ -70,6 +70,7 @@ struct BlockJob {
>     const BlockJobType *job_type;
>     BlockDriverState *bs;
>     bool cancelled;
>+    bool busy;
> 
>     /* These fields are published by the query-block-jobs QMP API */
>     int64_t offset;
>@@ -289,6 +290,7 @@ void block_job_complete(BlockJob *job, int ret);
> int block_job_set_speed(BlockJob *job, int64_t value);
> void block_job_cancel(BlockJob *job);
> bool block_job_is_cancelled(BlockJob *job);
>+void block_job_cancel_sync(BlockJob *job);
> 
> int stream_start(BlockDriverState *bs, BlockDriverState *base,
>                  const char *base_id, BlockDriverCompletionFunc *cb,
>-- 
>1.7.9.1
>

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Attachments on bug 807894: 573566 | 573718 | 573719