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SubjectRe: [PATCH 1/1] fs/mpage.c: forgotten WRITE_SYNC in case of data integrity write
On Fri, Mar 14, 2014 at 10:54:30AM -0400, Tejun Heo wrote:
> This is a bit surprising tho. Were we always like this? We never had
> even stupid "flush down everything and sync"? Or is this something we
> broke while morphing flush implementation several times in the past
> years?

It's something that never worked in Linux. Until XFS went ahead and
enabled barriers by default no filesystem in Linux ever flushed the
volatile cache by default, and most couldn't (and still can't) even if
you asked them to.


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