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block/backup: make function variables consistently named

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Rename opaque_job to job to be consistent with other job implementations.
Rename 'job', the BackupBlockJob object, to 's' to also be consistent.

Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20180830015734.19765-8-jsnow@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
John Snow 2018-08-29 21:57:32 -04:00 committed by Max Reitz
parent eb23654dbe
commit 6870277535
1 changed files with 31 additions and 31 deletions
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62
block/backup.c
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@ -468,59 +468,59 @@ static void backup_incremental_init_copy_bitmap(BackupBlockJob *job)
bdrv_dirty_iter_free(dbi);
}
static int coroutine_fn backup_run(Job *opaque_job, Error **errp)
static int coroutine_fn backup_run(Job *job, Error **errp)
{
BackupBlockJob *job = container_of(opaque_job, BackupBlockJob, common.job);
BlockDriverState *bs = blk_bs(job->common.blk);
BackupBlockJob *s = container_of(job, BackupBlockJob, common.job);
BlockDriverState *bs = blk_bs(s->common.blk);
int64_t offset, nb_clusters;
int ret = 0;
QLIST_INIT(&job->inflight_reqs);
qemu_co_rwlock_init(&job->flush_rwlock);
QLIST_INIT(&s->inflight_reqs);
qemu_co_rwlock_init(&s->flush_rwlock);
nb_clusters = DIV_ROUND_UP(job->len, job->cluster_size);
job_progress_set_remaining(&job->common.job, job->len);
nb_clusters = DIV_ROUND_UP(s->len, s->cluster_size);
job_progress_set_remaining(job, s->len);
job->copy_bitmap = hbitmap_alloc(nb_clusters, 0);
if (job->sync_mode == MIRROR_SYNC_MODE_INCREMENTAL) {
backup_incremental_init_copy_bitmap(job);
s->copy_bitmap = hbitmap_alloc(nb_clusters, 0);
if (s->sync_mode == MIRROR_SYNC_MODE_INCREMENTAL) {
backup_incremental_init_copy_bitmap(s);
} else {
hbitmap_set(job->copy_bitmap, 0, nb_clusters);
hbitmap_set(s->copy_bitmap, 0, nb_clusters);
}
job->before_write.notify = backup_before_write_notify;
bdrv_add_before_write_notifier(bs, &job->before_write);
s->before_write.notify = backup_before_write_notify;
bdrv_add_before_write_notifier(bs, &s->before_write);
if (job->sync_mode == MIRROR_SYNC_MODE_NONE) {
if (s->sync_mode == MIRROR_SYNC_MODE_NONE) {
/* All bits are set in copy_bitmap to allow any cluster to be copied.
* This does not actually require them to be copied. */
while (!job_is_cancelled(&job->common.job)) {
while (!job_is_cancelled(job)) {
/* Yield until the job is cancelled. We just let our before_write
* notify callback service CoW requests. */
job_yield(&job->common.job);
job_yield(job);
}
} else if (job->sync_mode == MIRROR_SYNC_MODE_INCREMENTAL) {
ret = backup_run_incremental(job);
} else if (s->sync_mode == MIRROR_SYNC_MODE_INCREMENTAL) {
ret = backup_run_incremental(s);
} else {
/* Both FULL and TOP SYNC_MODE's require copying.. */
for (offset = 0; offset < job->len;
offset += job->cluster_size) {
for (offset = 0; offset < s->len;
offset += s->cluster_size) {
bool error_is_read;
int alloced = 0;
if (yield_and_check(job)) {
if (yield_and_check(s)) {
break;
}
if (job->sync_mode == MIRROR_SYNC_MODE_TOP) {
if (s->sync_mode == MIRROR_SYNC_MODE_TOP) {
int i;
int64_t n;
/* Check to see if these blocks are already in the
* backing file. */
for (i = 0; i < job->cluster_size;) {
for (i = 0; i < s->cluster_size;) {
/* bdrv_is_allocated() only returns true/false based
* on the first set of sectors it comes across that
* are are all in the same state.
@ -529,7 +529,7 @@ static int coroutine_fn backup_run(Job *opaque_job, Error **errp)
* needed but at some point that is always the case. */
alloced =
bdrv_is_allocated(bs, offset + i,
job->cluster_size - i, &n);
s->cluster_size - i, &n);
i += n;
if (alloced || n == 0) {
@ -547,29 +547,29 @@ static int coroutine_fn backup_run(Job *opaque_job, Error **errp)
if (alloced < 0) {
ret = alloced;
} else {
ret = backup_do_cow(job, offset, job->cluster_size,
ret = backup_do_cow(s, offset, s->cluster_size,
&error_is_read, false);
}
if (ret < 0) {
/* Depending on error action, fail now or retry cluster */
BlockErrorAction action =
backup_error_action(job, error_is_read, -ret);
backup_error_action(s, error_is_read, -ret);
if (action == BLOCK_ERROR_ACTION_REPORT) {
break;
} else {
offset -= job->cluster_size;
offset -= s->cluster_size;
continue;
}
}
}
}
notifier_with_return_remove(&job->before_write);
notifier_with_return_remove(&s->before_write);
/* wait until pending backup_do_cow() calls have completed */
qemu_co_rwlock_wrlock(&job->flush_rwlock);
qemu_co_rwlock_unlock(&job->flush_rwlock);
hbitmap_free(job->copy_bitmap);
qemu_co_rwlock_wrlock(&s->flush_rwlock);
qemu_co_rwlock_unlock(&s->flush_rwlock);
hbitmap_free(s->copy_bitmap);
return ret;
}