aio is unlikely
Stick an unlikely() around is_aio(): I assert that most IO is synchronous. Cc: Suparna Bhattacharya <suparna@in.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Benjamin LaHaise <bcrl@kvack.org> Cc: Zach Brown <zach.brown@oracle.com> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -226,7 +226,8 @@ int FASTCALL(io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
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__put_ioctx(kioctx); \
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} while (0)
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#define in_aio() !is_sync_wait(current->io_wait)
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#define in_aio() (unlikely(!is_sync_wait(current->io_wait)))
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/* may be used for debugging */
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#define warn_if_async() \
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do { \
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