Messages in this thread | | | Date | Tue, 31 Jan 2012 11:48:21 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH v3] fs: Invalidate the cache for a parent block-device if fsync() is called for a partition |
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On Tue, 31 Jan 2012 14:37:48 -0500 Christoph Hellwig <hch@infradead.org> wrote:
> On Tue, Jan 31, 2012 at 11:32:50AM -0800, Andrew Morton wrote: > > I didn't say the kernel would support this as-is. > > > > If the partitioning scheme requires writing to the individual > > partitions then something would need to be done, such as a simple > > offsetting DM driver. > > Writing partition tables requires writing to them main block device.
This can be done via an offsetting driver.
> Seriously - if people want to support block devices nodes > 16TB dealing > with this isn't the problem. They'll need to find a way to do buffered > I/O without using the pagecache to get it right,
why? I don't see the problem - supporting /dev/sdaX should be straightforward. /dev/sda rarely gets used and would need a bit of special-case handling.
Please provide all the details as you see them and stop making me email more questions to you.
> at which point > blkdev_get_block in either form will simply go away.
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