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dircache: add SetRootIDAlias to update RootID from FindLeaf

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This commit is contained in:
Nick Craig-Wood 2021-10-31 19:07:09 +00:00
parent af705c754c
commit 07fcba888c
1 changed files with 14 additions and 0 deletions
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14
lib/dircache/dircache.go
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@ -126,6 +126,20 @@ func (dc *DirCache) Flush() {
dc.cacheMu.Unlock()
}
// SetRootIDAlias sets the rootID to that passed in. This assumes that
// the new ID is just an alias for the old ID so does not flush
// anything.
//
// This should be called from FindLeaf (and only from FindLeaf) if it
// is discovered that the root ID is incorrect. For example some
// backends use "0" as a root ID, but it has a real ID which is needed
// for some operations.
func (dc *DirCache) SetRootIDAlias(rootID string) {
// No locking as this is called from FindLeaf
dc.rootID = rootID
dc.Put("", dc.rootID)
}
// FlushDir flushes the map of all data starting with with the path
// dir.
//