On Wed, Mar 22, 2017 at 10:00:05PM +0100, Kevin Wolf wrote: > Success for bdrv_flush() means that all previously written data is safe > on disk. For fdatasync(), the best semantics we can hope for on Linux > (without O_DIRECT) is that all data that was written since the last call > was successfully written back. Therefore, and because we can't redo all > writes after a flush failure, we have to give up after a single > fdatasync() failure. After this failure, we would never be able to make > the promise that a successful bdrv_flush() makes. > > Signed-off-by: Kevin Wolf <[email protected]> > --- > block/file-posix.c | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+)
Reviewed-by: Stefan Hajnoczi <[email protected]>
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