Re: [PATCH 1/1] FS: Add generic data flush to fsync

[Christoph Hellwig]

On Fri, Apr 11, 2014 at 06:52:42AM +0200, Fabian Frederick wrote:
> Currently, there's no generic HW flush management support in kernel.
> Only 7 filesystems have their own way to manage the barrier flag.
> 
> This patch adds MS_BARRIER in sb_flags and conditionnaly issues the flush
> in generic_file_fsync.

Please don't add a binary mount option for something thast already is a
text option in many filesystems.  We can actually enable/disable cache
flushes at the block device level, so I think this can be
unconditional.
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