On Thu, 31 Aug 2017, Christoph Hellwig wrote:
> The whole VMA games here look entirely bogus you can't just drop
> and reacquire mmap_sem for example.
> And splitting vmas looks just
> as promblematic.
I didn't just decide to do that on a whim. I spent quite some time
looking at page fault code
The whole VMA games here look entirely bogus you can't just drop
and reacquire mmap_sem for example. And splitting vmas looks just
as promblematic.
As a minimum you really must see the linux-mm list can get some
feedback there.
On Wed, Aug 30, 2017 at 11:09:31PM -0400, Nicolas Pitre wrote:
> Wh
When cramfs_physmem is used then we have the opportunity to map files
directly from ROM, directly into user space, saving on RAM usage.
This gives us Execute-In-Place (XIP) support.
For a file to be mmap()-able, the map area has to correspond to a range
of uncompressed and contiguous blocks, and i
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