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vfs: reduce memory usage by re-ordering commonly used structures

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Nick Craig-Wood
2022-07-28 18:14:04 +01:00
parent e749bc58f4
commit a07d376fb1
4 changed files with 13 additions and 13 deletions
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8
vfs/file.go
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@@ -39,19 +39,19 @@ type File struct {
inode uint64 // inode number - read only
size int64 // size of file - read and written with atomic int64 - must be 64 bit aligned
muRW sync.Mutex // synchronize RWFileHandle.openPending(), RWFileHandle.close() and File.Remove
mu sync.RWMutex // protects the following
d *Dir // parent directory
dPath string // path of parent directory. NB dir rename means all Files are flushed
o fs.Object // NB o may be nil if file is being written
leaf string // leaf name of the object
writers []Handle // writers for this file
nwriters int32 // len(writers) which is read/updated with atomic
pendingModTime time.Time // will be applied once o becomes available, i.e. after file was written
pendingRenameFun func(ctx context.Context) error // will be run/renamed after all writers close
appendMode bool // file was opened with O_APPEND
sys atomic.Value // user defined info to be attached here
muRW sync.Mutex // synchronize RWFileHandle.openPending(), RWFileHandle.close() and File.Remove
nwriters int32 // len(writers) which is read/updated with atomic
appendMode bool // file was opened with O_APPEND
}
// newFile creates a new File