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Re: [Qemu-devel] [PATCH v3 05/15] backup: Extract dirty bitmap handling
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH v3 05/15] backup: Extract dirty bitmap handling as a separate function |
Date: |
Tue, 14 Jul 2015 10:46:05 +0800 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Mon, 07/13 19:06, John Snow wrote:
>
>
> On 07/09/2015 11:46 PM, Fam Zheng wrote:
> > This will be reused by the coming new transactional completion code.
> >
> > Signed-off-by: Fam Zheng <address@hidden>
> > ---
> > block/backup.c | 26 ++++++++++++++++----------
> > 1 file changed, 16 insertions(+), 10 deletions(-)
> >
> > diff --git a/block/backup.c b/block/backup.c
> > index 965654d..6e24384 100644
> > --- a/block/backup.c
> > +++ b/block/backup.c
> > @@ -210,6 +210,21 @@ static void backup_iostatus_reset(BlockJob *job)
> >
> > bdrv_iostatus_reset(s->target);
> > }
> > +static void backup_handle_dirty_bitmap(BackupBlockJob *job, int ret)
> > +{
> > + BdrvDirtyBitmap *bm;
> > + BlockDriverState *bs = job->common.bs;
> > +
> > + if (ret < 0 || block_job_is_cancelled(&job->common)) {
> > + /* Merge the successor back into the parent, delete nothing. */
> > + bm = bdrv_reclaim_dirty_bitmap(bs, job->sync_bitmap, NULL);
> > + assert(bm);
> > + } else {
> > + /* Everything is fine, delete this bitmap and install the backup.
> > */
> > + bm = bdrv_dirty_bitmap_abdicate(bs, job->sync_bitmap, NULL);
> > + assert(bm);
> > + }
> > +}
> >
> > static const BlockJobDriver backup_job_driver = {
> > .instance_size = sizeof(BackupBlockJob),
> > @@ -430,16 +445,7 @@ static void coroutine_fn backup_run(void *opaque)
> > qemu_co_rwlock_unlock(&job->flush_rwlock);
> >
> > if (job->sync_bitmap) {
> > - BdrvDirtyBitmap *bm;
> > - if (ret < 0 || block_job_is_cancelled(&job->common)) {
> > - /* Merge the successor back into the parent, delete nothing. */
> > - bm = bdrv_reclaim_dirty_bitmap(bs, job->sync_bitmap, NULL);
> > - assert(bm);
> > - } else {
> > - /* Everything is fine, delete this bitmap and install the
> > backup. */
> > - bm = bdrv_dirty_bitmap_abdicate(bs, job->sync_bitmap, NULL);
> > - assert(bm);
> > - }
> > + backup_handle_dirty_bitmap(job, ret);
> > }
> > hbitmap_free(job->bitmap);
> >
> >
>
> Bike-shedding: strange name, I may have used 'cleanup' or 'finalize' or
> so, but that's neither here nor there.
Good suggestion, so I'll change to "cleanup" while keeping your reviewed-by,
ok? :)
Fam
>
> Reviewed-by: John Snow <address@hidden>
>
- [Qemu-devel] [PATCH v3 00/15] block: incremental backup transactions using BlockJobTxn, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 01/15] qapi: Add transaction support to block-dirty-bitmap operations, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 02/15] iotests: add transactional incremental backup test, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 03/15] block: rename BlkTransactionState and BdrvActionOps, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 04/15] block: keep bitmap if incremental backup job is cancelled, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 05/15] backup: Extract dirty bitmap handling as a separate function, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 06/15] blockjob: Add .txn_commit and .txn_abort transaction actions, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 07/15] blockjob: Add "completed" and "ret" in BlockJob, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 08/15] blockjob: Simplify block_job_finish_sync, Fam Zheng, 2015/07/09
- [Qemu-devel] [PATCH v3 09/15] blockjob: Move BlockJobDeferToMainLoopData into BlockJob, Fam Zheng, 2015/07/09