Re: [PATCH 6/9] migration: Replaced qemu_mutex_lock calls with QEMU_LOCK_GUARD

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Dr. David Alan Gilbert (dgilbert@redhat.com) wrote:
> * Mahmoud Mandour (ma.mandourr@gmail.com) wrote:
> > Replaced various qemu_mutex_lock calls and their respective
> > qemu_mutex_unlock calls with QEMU_LOCK_GUARD macro. This simplifies
> > the code by eliminating the respective qemu_mutex_unlock calls.
> > 
> > Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
> 
> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

I've queued 5 and 6 via my queue.

Dave

> > ---
> >  migration/migration.c | 6 ++----
> >  migration/ram.c       | 6 ++----
> >  2 files changed, 4 insertions(+), 8 deletions(-)
> > 
> > diff --git a/migration/migration.c b/migration/migration.c
> > index a5ddf43559..36768391b6 100644
> > --- a/migration/migration.c
> > +++ b/migration/migration.c
> > @@ -323,7 +323,7 @@ static int migrate_send_rp_message(MigrationIncomingState *mis,
> >      int ret = 0;
> >  
> >      trace_migrate_send_rp_message((int)message_type, len);
> > -    qemu_mutex_lock(&mis->rp_mutex);
> > +    QEMU_LOCK_GUARD(&mis->rp_mutex);
> >  
> >      /*
> >       * It's possible that the file handle got lost due to network
> > @@ -331,7 +331,7 @@ static int migrate_send_rp_message(MigrationIncomingState *mis,
> >       */
> >      if (!mis->to_src_file) {
> >          ret = -EIO;
> > -        goto error;
> > +        return ret;
> >      }
> >  
> >      qemu_put_be16(mis->to_src_file, (unsigned int)message_type);
> > @@ -342,8 +342,6 @@ static int migrate_send_rp_message(MigrationIncomingState *mis,
> >      /* It's possible that qemu file got error during sending */
> >      ret = qemu_file_get_error(mis->to_src_file);
> >  
> > -error:
> > -    qemu_mutex_unlock(&mis->rp_mutex);
> >      return ret;
> >  }
> >  
> > diff --git a/migration/ram.c b/migration/ram.c
> > index 72143da0ac..52537f14ac 100644
> > --- a/migration/ram.c
> > +++ b/migration/ram.c
> > @@ -819,7 +819,7 @@ static inline bool migration_bitmap_clear_dirty(RAMState *rs,
> >  {
> >      bool ret;
> >  
> > -    qemu_mutex_lock(&rs->bitmap_mutex);
> > +    QEMU_LOCK_GUARD(&rs->bitmap_mutex);
> >  
> >      /*
> >       * Clear dirty bitmap if needed.  This _must_ be called before we
> > @@ -852,7 +852,6 @@ static inline bool migration_bitmap_clear_dirty(RAMState *rs,
> >      if (ret) {
> >          rs->migration_dirty_pages--;
> >      }
> > -    qemu_mutex_unlock(&rs->bitmap_mutex);
> >  
> >      return ret;
> >  }
> > @@ -3275,7 +3274,7 @@ static void decompress_data_with_multi_threads(QEMUFile *f,
> >      int idx, thread_count;
> >  
> >      thread_count = migrate_decompress_threads();
> > -    qemu_mutex_lock(&decomp_done_lock);
> > +    QEMU_LOCK_GUARD(&decomp_done_lock);
> >      while (true) {
> >          for (idx = 0; idx < thread_count; idx++) {
> >              if (decomp_param[idx].done) {
> > @@ -3295,7 +3294,6 @@ static void decompress_data_with_multi_threads(QEMUFile *f,
> >              qemu_cond_wait(&decomp_done_cond, &decomp_done_lock);
> >          }
> >      }
> > -    qemu_mutex_unlock(&decomp_done_lock);
> >  }
> >  
> >   /*
> > -- 
> > 2.25.1
> > 
> -- 
> Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
> 
> 
-- 
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK