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Fix a few data races when reading files in mount (#3527)

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This commit is contained in:
Patrick Schmidt
2022-08-27 01:41:37 +02:00
committed by GitHub
parent f5156cf3a8
commit 5df105b1f9
6 changed files with 70 additions and 37 deletions
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12
weed/mount/weedfs_dir_lookup.go
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@@ -2,7 +2,9 @@ package mount
import (
"context"
"github.com/hanwen/go-fuse/v2/fuse"
"github.com/seaweedfs/seaweedfs/weed/filer"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/mount/meta_cache"
@@ -55,9 +57,13 @@ func (wfs *WFS) Lookup(cancel <-chan struct{}, header *fuse.InHeader, name strin
inode := wfs.inodeToPath.Lookup(fullFilePath, localEntry.Crtime.Unix(), localEntry.IsDirectory(), len(localEntry.HardLinkId) > 0, localEntry.Inode, true)
if fh, found := wfs.fhmap.FindFileHandle(inode); found && fh.entry != nil {
glog.V(4).Infof("lookup opened file %s size %d", dirPath.Child(localEntry.Name()), filer.FileSize(fh.entry))
localEntry = filer.FromPbEntry(string(dirPath), fh.entry)
if fh, found := wfs.fhmap.FindFileHandle(inode); found {
fh.entryLock.Lock()
if fh.entry != nil {
glog.V(4).Infof("lookup opened file %s size %d", dirPath.Child(localEntry.Name()), filer.FileSize(fh.entry))
localEntry = filer.FromPbEntry(string(dirPath), fh.entry)
}
fh.entryLock.Unlock()
}
wfs.outputFilerEntry(out, inode, localEntry)