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authorKevin Wolf <kwolf@redhat.com>2015-09-16 13:34:54 +0200
committerKevin Wolf <kwolf@redhat.com>2015-10-16 15:34:30 +0200
commit8ccb9569a976056c9594bb720ba33d84827648d9 (patch)
tree9f7114320fd8728d8164ad92efa425a1a3af246d /blockjob.c
parentdd62f1ca433ea60b06590884642ad2c8f8e539f2 (diff)
downloadqemu-arm-8ccb9569a976056c9594bb720ba33d84827648d9.tar.gz
blockjob: Store device name at job creation
Some block jobs change the block device graph on completion. This means that the device that owns the job and originally was addressed with its device name may no longer be what the corresponding BlockBackend points to. Previously, the effects of bdrv_swap() ensured that the job was (at least partially) transferred to the target image. Events that contain the device name could still use bdrv_get_device_name(job->bs) and get the same result. After removing bdrv_swap(), this won't work any more. Instead, save the device name at job creation and use that copy for QMP events and anything else identifying the job. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'blockjob.c')
-rw-r--r--blockjob.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/blockjob.c b/blockjob.c
index 62bb906634..d87869c24a 100644
--- a/blockjob.c
+++ b/blockjob.c
@@ -54,6 +54,7 @@ void *block_job_create(const BlockJobDriver *driver, BlockDriverState *bs,
bdrv_op_unblock(bs, BLOCK_OP_TYPE_DATAPLANE, job->blocker);
job->driver = driver;
+ job->id = g_strdup(bdrv_get_device_name(bs));
job->bs = bs;
job->cb = cb;
job->opaque = opaque;
@@ -81,6 +82,7 @@ void block_job_release(BlockDriverState *bs)
bs->job = NULL;
bdrv_op_unblock_all(bs, job->blocker);
error_free(job->blocker);
+ g_free(job->id);
g_free(job);
}
@@ -113,8 +115,7 @@ void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)
void block_job_complete(BlockJob *job, Error **errp)
{
if (job->pause_count || job->cancelled || !job->driver->complete) {
- error_setg(errp, QERR_BLOCK_JOB_NOT_READY,
- bdrv_get_device_name(job->bs));
+ error_setg(errp, QERR_BLOCK_JOB_NOT_READY, job->id);
return;
}
@@ -269,7 +270,7 @@ BlockJobInfo *block_job_query(BlockJob *job)
{
BlockJobInfo *info = g_new0(BlockJobInfo, 1);
info->type = g_strdup(BlockJobType_lookup[job->driver->job_type]);
- info->device = g_strdup(bdrv_get_device_name(job->bs));
+ info->device = g_strdup(job->id);
info->len = job->len;
info->busy = job->busy;
info->paused = job->pause_count > 0;
@@ -291,7 +292,7 @@ static void block_job_iostatus_set_err(BlockJob *job, int error)
void block_job_event_cancelled(BlockJob *job)
{
qapi_event_send_block_job_cancelled(job->driver->job_type,
- bdrv_get_device_name(job->bs),
+ job->id,
job->len,
job->offset,
job->speed,
@@ -301,7 +302,7 @@ void block_job_event_cancelled(BlockJob *job)
void block_job_event_completed(BlockJob *job, const char *msg)
{
qapi_event_send_block_job_completed(job->driver->job_type,
- bdrv_get_device_name(job->bs),
+ job->id,
job->len,
job->offset,
job->speed,
@@ -315,7 +316,7 @@ void block_job_event_ready(BlockJob *job)
job->ready = true;
qapi_event_send_block_job_ready(job->driver->job_type,
- bdrv_get_device_name(job->bs),
+ job->id,
job->len,
job->offset,
job->speed, &error_abort);
@@ -344,7 +345,7 @@ BlockErrorAction block_job_error_action(BlockJob *job, BlockDriverState *bs,
default:
abort();
}
- qapi_event_send_block_job_error(bdrv_get_device_name(job->bs),
+ qapi_event_send_block_job_error(job->id,
is_read ? IO_OPERATION_TYPE_READ :
IO_OPERATION_TYPE_WRITE,
action, &error_abort);