[#1296] writecache: Add count limit

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/writecache/put.go

@@ -76,8 +76,7 @@ func (c *cache) Put(ctx context.Context, prm common.PutPrm) (common.PutRes, erro
 // putSmall persists small objects to the write-cache database and
 // pushes the to the flush workers queue.
 func (c *cache) putSmall(obj objectInfo) error {
-	cacheSize := c.estimateCacheSize()
-	if c.maxCacheSize < c.incSizeDB(cacheSize) {
+	if !c.hasEnoughSpaceDB() {
 		return ErrOutOfSpace
 	}
 
@@ -107,8 +106,7 @@ func (c *cache) putSmall(obj objectInfo) error {
 
 // putBig writes object to FSTree and pushes it to the flush workers queue.
 func (c *cache) putBig(ctx context.Context, addr string, prm common.PutPrm) error {
-	cacheSz := c.estimateCacheSize()
-	if c.maxCacheSize < c.incSizeFS(cacheSz) {
+	if !c.hasEnoughSpaceFS() {
 		return ErrOutOfSpace
 	}