Nick's core remove PageReserved broke vmware...

[Petr Vandrovec]

Hello Nick,
  what's the reason behind disallowing get_user_pages() on VM_RESERVED regions? 
 vmmon uses VM_RESERVED on its 'vma' as otherwise some kernels used by SUSE 
complained loudly about mismatch between PageReserved() and VM_RESERVED flags.

  I'll remove it from vmmon for >= 2.6.14 kernels as that bogus test never made 
to Linux kernel, but I cannot find any reason why get_user_pages() should not 
work on VM_RESERVED (or VM_IO for that matter) user pages.  Can you show me 
reasoning behind that decision ?
							Thanks,
								Petr Vandrovec


b5810039a54e5babf428e9a1e89fc1940fabff11 


tree 835836cb527ec9bd525f93eb7e016f3dfb8c8ae2 


parent f9c98d0287de42221c624482fd4f8d485c98ab22 


author Nick Piggin <nickpiggin@xxxxxxxxxxxx> Sat, 29 Oct 2005 18:16:12 -0700 


committer Linus Torvalds <torvalds@xxxxxxxxxxx> Sat, 29 Oct 2005 21:40:39 -0700 





    [PATCH] core remove PageReserved 





    Remove PageReserved() calls from core code by tightening VM_RESERVED 


    handling in mm/ to cover PageReserved functionality. 






-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/