if contextCanceled(ctx) {
		xioutil.SafeClose(updates)
		return dataUsageCache{}, ctx.Err()
	}

	if err := p.checkDiskStale(); err != nil {
		xioutil.SafeClose(updates)
		return dataUsageCache{}, err
	}

	weSleep := func() bool {
		return scannerIdleMode.Load() == 0
	}

						errOnce.Do(func() {
							retError = err.Error()
						})
					}
					downloadsCancel()
					return
				}
				fbr := firstByteRecorder{
					r: r,
				}
				n, err := xioutil.Copy(xioutil.Discard, &fbr)
				r.Close()
				if err == nil {
					response := time.Since(t)
					ttfb := time.Since(*fbr.t)
					// Only capture success criteria - do not
					// have to capture failed reads, truncated

import (
	"context"
	"errors"
	"fmt"
	"math/rand"
	"os"
	"runtime"
	"sort"
	"sync"
	"time"

	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/dsync"
	xioutil "github.com/minio/minio/internal/ioutil"
	"github.com/minio/pkg/v3/sync/errgroup"
)

// list all errors that can be ignore in a bucket operation.
var bucketOpIgnoredErrs = append(baseIgnoredErrs, errDiskAccessDenied, errUnformattedDisk)

	defer m.respMu.Unlock()
	if !m.closed {
		m.respErr.Store(&err)
		// Do not block.
		select {
		case respHandler <- Response{Err: err}:
			xioutil.SafeClose(respHandler)
		default:
			go func() {
				respHandler <- Response{Err: err}
				xioutil.SafeClose(respHandler)
			}()
		}
		gridLogIf(m.ctx, m.sendLocked(message{Op: OpDisconnectServerMux, MuxID: m.MuxID}))
		m.closed = true
	}
}

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"io"
	"sort"
	"strings"

	"github.com/minio/minio/internal/grid"
	xioutil "github.com/minio/minio/internal/ioutil"
	"github.com/valyala/bytebufferpool"
)

//go:generate msgp -file $GOFILE

// WalkDirOptions provides options for WalkDir operations.
type WalkDirOptions struct {
	// Bucket to scanner

		// Returns 75% of max memory allowed
		maxMem := globalServerCtxt.MemLimit

		// max requests per node is calculated as
		// total_ram / ram_per_request
		blockSize := xioutil.LargeBlock + xioutil.SmallBlock
		if legacy {
			// ram_per_request is (1MiB+32KiB) * driveCount \
			//    + 2 * 10MiB (default erasure block size v1) + 2 * 1MiB (default erasure block size v2)

				VersionsSort: WalkVersionsSortDesc,
			})
			if err != nil {
				cancelCause(err)
				xioutil.SafeClose(results)
				return
			}
			for result := range prefixResultCh {
				results <- result
			}
		}
		xioutil.SafeClose(results)
	}()

	// Goroutine to periodically save batch-expire job's in-memory state
	saverQuitCh := make(chan struct{})
	go func() {

				funcReturnedMu.Lock()
				returned = funcReturned
				funcReturnedMu.Unlock()
				outCh <- entry
				if returned {
					xioutil.SafeClose(outCh)
				}
			}
			entry.reusable = returned
			saveCh <- entry
		}
		if !returned {
			xioutil.SafeClose(outCh)
		}
		xioutil.SafeClose(saveCh)
	}()

	entries, err = filteredResults()
	if err == nil {
		// Check if listing recorded an error.

		}
		go func() {
			defer xioutil.SafeClose(stream.Requests)
			for req := range reqT {
				b, err := req.MarshalMsg(GetByteBufferCap(req.Msgsize()))
				if err != nil {
					gridLogOnceIf(ctx, err, err.Error())
				}
				h.PutRequest(req)
				stream.Requests <- b
			}
		}()
	} else if stream.Requests != nil {
		xioutil.SafeClose(stream.Requests)
	}

}

func (c *closeNotifier) Read(p []byte) (n int, err error) {
	n, err = c.rc.Read(p)
	if err != nil {
		if c.done != nil {
			xioutil.SafeClose(c.done)
			c.done = nil
		}
	}
	return n, err
}

func (c *closeNotifier) Close() error {
	if c.done != nil {
		xioutil.SafeClose(c.done)
		c.done = nil
	}
	return c.rc.Close()
}