Add block queue properties to identify and manage demand paging
and swapin requests differently.
Signed-off-by: Ilan Smith <ilan.smith@xxxxxxxxxxx>
Signed-off-by: Alex Lemberg <alex.lemberg@xxxxxxxxxxx>
Signed-off-by: Venkatraman S <svenkatr@xxxxxx>
---
include/linux/blkdev.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 2aa2466..e9187d4 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -420,6 +420,8 @@ struct request_queue {
#define QUEUE_FLAG_ADD_RANDOM 16 /* Contributes to random pool */
#define QUEUE_FLAG_SECDISCARD 17 /* supports SECDISCARD */
#define QUEUE_FLAG_SAME_FORCE 18 /* force complete on same CPU */
+#define QUEUE_FLAG_EXP_DMPG 19 /* Expedite Demand paging requests */
+#define QUEUE_FLAG_EXP_SWAPIN 20 /* Expedit page swapping */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
@@ -502,6 +504,12 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
#define blk_queue_secdiscard(q) (blk_queue_discard(q) && \
test_bit(QUEUE_FLAG_SECDISCARD, &(q)->queue_flags))
+#define blk_queue_exp_dmpg(q) \
+ test_bit(QUEUE_FLAG_EXP_DMPG, &(q)->queue_flags)
+
+#define blk_queue_exp_swapin(q) \
+ test_bit(QUEUE_FLAG_EXP_SWAPIN, &(q)->queue_flags)
+
#define blk_noretry_request(rq) \
((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \
REQ_FAILFAST_DRIVER))
--
1.7.10.rc2
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