diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-10-13 09:31:28 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-10-13 09:31:34 +0200 |
commit | 9dbdd6c41c12fb42ee7188eafa7e1917b192af3a (patch) | |
tree | 06a9eb894bc976c5c20e84ccd74fd82b9b71aed4 /arch/arm/kernel/traps.c | |
parent | 7a693d3f0d10f978ebdf3082c41404ab97106567 (diff) | |
parent | 161291396e76e0832c08f617eb9bd364d1648148 (diff) |
Merge commit 'v2.6.32-rc4' into perf/core
Merge reason: we were on an -rc1 base, merge up to -rc4.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/kernel/traps.c')
-rw-r--r-- | arch/arm/kernel/traps.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 57eb0f6f600..467b69ed102 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -418,12 +418,14 @@ static int bad_syscall(int n, struct pt_regs *regs) static inline void do_cache_op(unsigned long start, unsigned long end, int flags) { + struct mm_struct *mm = current->active_mm; struct vm_area_struct *vma; if (end < start || flags) return; - vma = find_vma(current->active_mm, start); + down_read(&mm->mmap_sem); + vma = find_vma(mm, start); if (vma && vma->vm_start < end) { if (start < vma->vm_start) start = vma->vm_start; @@ -432,6 +434,7 @@ do_cache_op(unsigned long start, unsigned long end, int flags) flush_cache_user_range(vma, start, end); } + up_read(&mm->mmap_sem); } /* |