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-rw-r--r--fs/ocfs2/aops.h23
1 files changed, 21 insertions, 2 deletions
diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h
index 76bfdfda691a..eceb456037c1 100644
--- a/fs/ocfs2/aops.h
+++ b/fs/ocfs2/aops.h
@@ -68,8 +68,27 @@ static inline void ocfs2_iocb_set_rw_locked(struct kiocb *iocb, int level)
else
clear_bit(1, (unsigned long *)&iocb->private);
}
+
+/*
+ * Using a named enum representing lock types in terms of #N bit stored in
+ * iocb->private, which is going to be used for communication bewteen
+ * ocfs2_dio_end_io() and ocfs2_file_aio_write/read().
+ */
+enum ocfs2_iocb_lock_bits {
+ OCFS2_IOCB_RW_LOCK = 0,
+ OCFS2_IOCB_RW_LOCK_LEVEL,
+ OCFS2_IOCB_SEM,
+ OCFS2_IOCB_NUM_LOCKS
+};
+
#define ocfs2_iocb_clear_rw_locked(iocb) \
- clear_bit(0, (unsigned long *)&iocb->private)
+ clear_bit(OCFS2_IOCB_RW_LOCK, (unsigned long *)&iocb->private)
#define ocfs2_iocb_rw_locked_level(iocb) \
- test_bit(1, (unsigned long *)&iocb->private)
+ test_bit(OCFS2_IOCB_RW_LOCK_LEVEL, (unsigned long *)&iocb->private)
+#define ocfs2_iocb_set_sem_locked(iocb) \
+ set_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private)
+#define ocfs2_iocb_clear_sem_locked(iocb) \
+ clear_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private)
+#define ocfs2_iocb_is_sem_locked(iocb) \
+ test_bit(OCFS2_IOCB_SEM, (unsigned long *)&iocb->private)
#endif /* OCFS2_FILE_H */