projects / firefly-linux-kernel-4.4.55.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 62179d4) | patch
um: Implement a custom pte_same() function
authorRichard Weinberger <richard@nod.at>
Sat, 14 Apr 2012 15:29:30 +0000 (17:29 +0200)
committerRichard Weinberger <richard@nod.at>
Mon, 21 May 2012 19:09:34 +0000 (21:09 +0200)
commitf15b9000eb1d09bbaa4b0a6b2089d7e1f64e84b3
tree328e59eb0b946a2f79b5d9e926fbc26821077502tree | snapshot
parent62179d47c2b1495bedc942b424e933a4b0f2ed51commit | diff
um: Implement a custom pte_same() function

UML uses the _PAGE_NEWPAGE flag to mark pages which are not jet
installed on the host side using mmap().
pte_same() has to ignore this flag, otherwise unuse_pte_range()
is unable to unuse the page because two identical
page tables entries with different _PAGE_NEWPAGE flags would not
match and swapoff() would never return.

CC: stable@kernel.org
Analyzed-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
arch/um/include/asm/pgtable.h diff | blob | history
Unnamed repository; edit this file 'description' to name the repository.