search for: request_ranges

...dows, which has a DeviceIOControl called FSCTL_QUERY_ALLOCATED_RANGES that returns an array of offset and length values, within a given range in a file (also specified by offset and length). So, it?s almost a direct mapping to the extension I proposed. I basically have three different versions of a request_ranges() function (Windows, systems with SEEK_DATA/SEEK_HOLE, and a dummy implementation for all other platforms which just returns the full range passed in). The risk of missing data due to file changes is no different than what could happen if you were reading data sequentially and something did a writ...

Latest cleanups and junk from Zach's tree. All for -mm tree. Based off Jeremy's latest known applied patches. If the paravirt or VMI patches reject let me know; we are cleaning up tree and will redo. Otherwise, I have 4 fixes for i386; a warning fix in sysenter which is quite serious; some less important warning removals, and a bug with pgd locking during root creation. Next, I tidy up

Latest cleanups and junk from Zach's tree. All for -mm tree. Based off Jeremy's latest known applied patches. If the paravirt or VMI patches reject let me know; we are cleaning up tree and will redo. Otherwise, I have 4 fixes for i386; a warning fix in sysenter which is quite serious; some less important warning removals, and a bug with pgd locking during root creation. Next, I tidy up

...dows, which has a DeviceIOControl called FSCTL_QUERY_ALLOCATED_RANGES that returns an array of offset and length values, within a given range in a file (also specified by offset and length). So, it?s almost a direct mapping to the extension I proposed. I basically have three different versions of a request_ranges() function (Windows, systems with SEEK_DATA/SEEK_HOLE, and a dummy implementation for all other platforms which just returns the full range passed in). > > The risk of missing data due to file changes is no different than what could happen if you were reading data sequentially and something d...