[lkml]   [2004]   [Nov]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 17/20] FRV: Better mmap support in uClinux
On Mon, Nov 08, 2004 at 02:34:20PM +0000, wrote:

> (3) Files (and blockdevs) cannot be mapped shared since it is not
> really possible to honour this by writing any changes back to the
> backing device.

[way behind on email]

I think this could be done at msync, munmap and exit time? You end up
flushing the entire mapping, but it's still correct (and POSIX

And, if you wanted to be really clever, you could store a hash of each
page to detect changes and avoid the extra I/O.

Mathematics is the supreme nostalgia of our time.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:08    [W:0.140 / U:1.120 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site