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linux/mm/memory.c
Linus Torvalds 67121172f9 Allow arbitrary read-only shared pfn-remapping too 
The VM layer (for historical reasons) turns a read-only shared mmap into
a private-like mapping with the VM_MAYWRITE bit clear.  Thus checking
just VM_SHARED isn't actually sufficient.

So use a trivial helper function for the cases where we wanted to inquire
if a mapping was COW-like or not.

Moo!

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-11 20:38:17 -08:00

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