[PATCH v2 03/16] block: add queue attributes to manage dpmg and swapin requests
From: Venkatraman S <hidden>
Date: 2012-05-03 14:23:02
Also in:
linux-fsdevel, linux-mmc, linux-omap, lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Add block queue properties to identify and manage demand paging and swapin requests differently. Signed-off-by: Ilan Smith <redacted> Signed-off-by: Alex Lemberg <redacted> Signed-off-by: Venkatraman S <redacted> --- 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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