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 <[email protected]> Sat, 29 Oct 2005 18:16:12 -0700
committer Linus Torvalds <[email protected]> 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.
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