On Tue, 26 Feb 2008 07:26:50 +0000 Jamie Lokier <jamie@xxxxxxxxxxxxx> wrote:
> (It would be nicer if sync_file_range()
> took a vector of ranges for better elevator scheduling, but let's
> ignore that :-)
Two passes:
Pass 1: shove each of the segments into the queue with
SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE
Pass 2: wait for them all to complete and return accumulated result
with SYNC_FILE_RANGE_WAIT_AFTER
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