diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-13 09:02:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-13 09:02:21 -0800 |
| commit | 28839855bf623f2d7eee72377d4896770a45494f (patch) | |
| tree | e7f8b0742120b9d7401f5783a6065f004167aae1 /mm | |
| parent | ccbf04f24c55ead791dac5df8ddeb1a640fbaad8 (diff) | |
| parent | 6e96281412f2f757abe623e08a9577e2bbd3402f (diff) | |
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
smp_call_function_single(): be slightly less stupid, fix #2
lockdep, mm: fix might_fault() annotation
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c index e009ce87085..c2d4c477e5b 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3165,6 +3165,15 @@ void print_vma_addr(char *prefix, unsigned long ip) #ifdef CONFIG_PROVE_LOCKING void might_fault(void) { + /* + * Some code (nfs/sunrpc) uses socket ops on kernel memory while + * holding the mmap_sem, this is safe because kernel memory doesn't + * get paged out, therefore we'll never actually fault, and the + * below annotations will generate false positives. + */ + if (segment_eq(get_fs(), KERNEL_DS)) + return; + might_sleep(); /* * it would be nicer only to annotate paths which are not under |