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| author |   Nick Piggin <npiggin@suse.de> | 2008-07-25 19:45:20 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-26 12:00:05 -0700 |
| commit | a0a8f5364a5ad248aec6cb705e0092ff563edc2f (patch) | |
| tree | fe942b13adc527f66103d529c2ee91da05086d1c /include/linux/mm.h | |
| parent | mn10300: use the common ascii hex helpers (diff) | |
| download | linux-dev-a0a8f5364a5ad248aec6cb705e0092ff563edc2f.tar.xz linux-dev-a0a8f5364a5ad248aec6cb705e0092ff563edc2f.zip | |
x86: implement pte_special
Implement the pte_special bit for x86. This is required to support
lockless get_user_pages, because we need to know whether or not we can
refcount a particular page given only its pte (and no vma).
[hugh@veritas.com: fix a BUG]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Reviewed-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions