fix write to io.max and cli flag name

Author: sergeimonakhov

cmd/cgroup2ctl/main.go

@@ -12,7 +12,7 @@ import (
 func main() {
 	// Define command-line flags
 	cgroupPath := flag.String("cgroup", "", "Path to cgroup directory")
-	ioConfigFile := flag.String("config", "", "Path to JSON configuration file for IO limits")
+	ioConfigFile := flag.String("io-config", "", "Path to JSON configuration file for IO limits")
 	memoryLimit := flag.String("memory", "", "Memory limit (e.g. 1G, 500M)")
 	swapLimit := flag.String("swap", "", "Swap limit (e.g. 2G, 1G)")
 

pkg/cgroup2/io/io.go

@@ -3,7 +3,6 @@ package io
 
 import (
 	"fmt"
-	"path/filepath"
 
 	"github.com/puzl-cloud/go-cgroup2/pkg/common"
 )
@@ -73,16 +72,8 @@ func SetDeviceIOLimits(cgroupPath, deviceNumbers string, readBps, writeBps, read
 	ioMaxValue := fmt.Sprintf("%s rbps=%s wbps=%s riops=%s wiops=%s",
 		deviceNumbers, rbpsStr, wbpsStr, riopsStr, wiopsStr)
 
-	// Get the full path to io.max
-	ioMaxPath := filepath.Join(cgroupPath, IOMaxFile)
-
 	// Write the value to io.max
-	err := common.WriteValueToFile(ioMaxPath, IOMaxFile, ioMaxValue)
-	if err != nil {
-		return fmt.Errorf("failed to write IO limits to %s: %w", ioMaxPath, err)
-	}
-
-	return nil
+	return common.WriteValueToFile(cgroupPath, IOMaxFile, ioMaxValue)
 }
 
 // SetIOLimitsFromJsonString applies IO limits from a JSON