[PATCH v5 1/7] fs: introduce write-hint start point for in-kernel hints

From: Kanchan Joshi <joshi.k@samsung.com>
To: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
	linux-ext4@vger.kernel.org
Cc: prakash.v@samsung.com, anshul@samsung.com,
	Kanchan Joshi <joshi.k@samsung.com>
Subject: [PATCH v5 1/7] fs: introduce write-hint start point for in-kernel hints
Date: Thu, 25 Apr 2019 16:49:56 +0530	[thread overview]
Message-ID: <1556191202-3245-2-git-send-email-joshi.k@samsung.com> (raw)
In-Reply-To: <1556191202-3245-1-git-send-email-joshi.k@samsung.com>

Introduce "WRITE_LIFE_KERN_MIN". Kernel mode components can define own
write-hints using this as base.

Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
---
 include/linux/fs.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index dd28e76..ee27eb4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -299,6 +299,8 @@ enum rw_hint {
 	WRITE_LIFE_MEDIUM	= RWH_WRITE_LIFE_MEDIUM,
 	WRITE_LIFE_LONG		= RWH_WRITE_LIFE_LONG,
 	WRITE_LIFE_EXTREME	= RWH_WRITE_LIFE_EXTREME,
+/* Kernel should use write-hint starting from this */
+	WRITE_LIFE_KERN_MIN,
 };
 
 #define IOCB_EVENTFD		(1 << 0)
-- 
2.7.4

