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cache: fix possible concurrent maps write on parent release 

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
v0.7
Tonis Tiigi 2019-11-12 11:28:39 -08:00
parent 2ceaa119e4
commit 1955890445
1 changed files with 4 additions and 1 deletions
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5
cache/refs.go vendored
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@ -254,7 +254,10 @@ func (cr *cacheRecord) Mount(ctx context.Context, readonly bool) (snapshot.Mount
func (cr *cacheRecord) remove(ctx context.Context, removeSnapshot bool) error {
delete(cr.cm.records, cr.ID())
if cr.parent != nil {
if err := cr.parent.release(ctx); err != nil {
cr.parent.mu.Lock()
err := cr.parent.release(ctx)
cr.parent.mu.Unlock()
if err != nil {
return err
}
}