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Date: Fri, 25 Aug 2017 08:40:32 -0700 From: Christoph Hellwig <hch@...radead.org> To: Theodore Ts'o <tytso@....edu> Cc: Christoph Hellwig <hch@...radead.org>, linux-ext4@...r.kernel.org, Lukas Czerner <lczerner@...hat.com>, linux-xfs@...r.kernel.org Subject: Re: [PATCH] ext4: introduce per-inode DAX flag On Fri, Aug 25, 2017 at 11:14:45AM -0400, Theodore Ts'o wrote: > > I don't know of anyone that actually uses the flag. If someone did > > that would probably run into problems like changing that changing it > > on a file that's currently mmaped would crash an burn badly. > > Crash and burn meaning the *kernel* will crash and burn? Or will data > be damaged? > > Given that, maybe XFS should withdraw support for the DAX and hope no > one is actually using it? Nah, -o dax works very well. It's just the flag instead of the -o dax option or rather switching it on a mapped file will probably be very dangerous. > > - Ted > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-xfs" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html ---end quoted text---
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