linux-ext4 - [PATCH v4 2/7] block: increase stream count for in-kernel use

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Date:   Wed, 17 Apr 2019 23:20:01 +0530
From:   Kanchan Joshi <joshi.k@...sung.com>
To:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org
Cc:     prakash.v@...sung.com, Kanchan Joshi <joshi.k@...sung.com>
Subject: [PATCH v4 2/7] block: increase stream count for in-kernel use

This bumps up stream count to support in-kernel hints.

Signed-off-by: Kanchan Joshi <joshi.k@...sung.com>
---
 include/linux/blkdev.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5c58a3b..f200aed 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -566,7 +566,9 @@ struct request_queue {
 
 	struct work_struct	release_work;
 
-#define BLK_MAX_WRITE_HINTS	5
+#define BLK_MAX_USER_HINTS     (WRITE_LIFE_KERN_MIN - 2)
+#define BLK_MAX_KERN_HINTS     4
+#define BLK_MAX_WRITE_HINTS    (1 + BLK_MAX_USER_HINTS + BLK_MAX_KERN_HINTS)
 	u64			write_hints[BLK_MAX_WRITE_HINTS];
 };
 
-- 
2.7.4