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-rw-r--r--include/linux/aio.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/aio.h b/include/linux/aio.h
index 9e0ae8711276..49fd37629ee4 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -210,8 +210,15 @@ struct kioctx *lookup_ioctx(unsigned long ctx_id);
210int FASTCALL(io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb, 210int FASTCALL(io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
211 struct iocb *iocb)); 211 struct iocb *iocb));
212 212
213#define get_ioctx(kioctx) do { if (unlikely(atomic_read(&(kioctx)->users) <= 0)) BUG(); atomic_inc(&(kioctx)->users); } while (0) 213#define get_ioctx(kioctx) do { \
214#define put_ioctx(kioctx) do { if (unlikely(atomic_dec_and_test(&(kioctx)->users))) __put_ioctx(kioctx); else if (unlikely(atomic_read(&(kioctx)->users) < 0)) BUG(); } while (0) 214 BUG_ON(unlikely(atomic_read(&(kioctx)->users) <= 0)); \
215 atomic_inc(&(kioctx)->users); \
216} while (0)
217#define put_ioctx(kioctx) do { \
218 BUG_ON(unlikely(atomic_read(&(kioctx)->users) <= 0)); \
219 if (unlikely(atomic_dec_and_test(&(kioctx)->users))) \
220 __put_ioctx(kioctx); \
221} while (0)
215 222
216#define in_aio() !is_sync_wait(current->io_wait) 223#define in_aio() !is_sync_wait(current->io_wait)
217/* may be used for debugging */ 224/* may be used for debugging */