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Subject[BUG] fs/aio: A possible sleep-in-atomic bug in aio_migratepage
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According to fs/aio.c, cond_resched is called under a spinlock,
and the function call path is:
aio_migratepage (acquire the spinlock)
migrate_page_copy
copy_huge_page
__copy_gigantic_page
cond_resched
might_sleep

This bug is found by my static analysis tool and my code review.
A possible fix is to remove cond_resched in __copy_gigantic_page.


Thanks,
Jia-Ju Bai


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