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| author | Michael S. Tsirkin <mst@redhat.com> | 2013-05-26 17:31:38 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-05-28 09:41:09 +0200 |
| commit | 1af1717dbf96eba8a74a2d6a99e75a7795075a02 (patch) | |
| tree | 6e77e8dc8c1ba17c10d41504663aa5302e41dc41 /arch/tile | |
| parent | 3837a3cfe4a27836e0e9f207eb2d4f00b5a8fcba (diff) | |
| download | op-kernel-dev-1af1717dbf96eba8a74a2d6a99e75a7795075a02.zip op-kernel-dev-1af1717dbf96eba8a74a2d6a99e75a7795075a02.tar.gz | |
powerpc: uaccess s/might_sleep/might_fault/
The only reason uaccess routines might sleep
is if they fault. Make this explicit.
Arnd Bergmann suggested that the following code
if (!is_kernel_addr((unsigned long)__pu_addr))
might_fault();
can be further simplified by adding a version of might_fault
that includes the kernel addr check.
Will be considered as a further optimization in future.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1369577426-26721-7-git-send-email-mst@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/tile')
0 files changed, 0 insertions, 0 deletions
