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Merge pull request from darrenstahlmsft/GraphdriverReference

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Windows: Fix reference counting in graphdriver
This commit is contained in:
Victor Vieux 2017-04-10 20:23:15 -07:00 • committed by GitHub
commit a6746e6ca5
1 changed files with 9 additions and 0 deletions

9
daemon/graphdriver/windows/windows.go
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@ -370,6 +370,9 @@ func (d *Driver) Get(id, mountLabel string) (string, error) {
mountPath, err := hcsshim.GetLayerMountPath(d.info, rID)
if err != nil {
d.ctr.Decrement(rID)
if err := hcsshim.UnprepareLayer(d.info, rID); err != nil {
logrus.Warnf("Failed to Unprepare %s: %s", id, err)
}
if err2 := hcsshim.DeactivateLayer(d.info, rID); err2 != nil {
logrus.Warnf("Failed to Deactivate %s: %s", id, err)
}
@ -402,9 +405,15 @@ func (d *Driver) Put(id string) error {
return nil
}
d.cacheMu.Lock()
_, exists := d.cache[rID]
delete(d.cache, rID)
d.cacheMu.Unlock()
// If the cache was not populated, then the layer was left unprepared and deactivated
if !exists {
return nil
}
if err := hcsshim.UnprepareLayer(d.info, rID); err != nil {
return err
}