System.Linux.FileExtents
type ExtentFlags
efLast
efUnknown
efDelalloc
efEncoded
efDataEncrypted
efNotAligned
efDataInline
efDataTail
efUnwritten
efMerged
efShared
data Extent
data ReqFlags
defReqFlags
getExtentsFd
getExtents
getExtentCountFd
getExtentCount