[v5,1/7] fs: introduce write-hint start point for in-kernel hints
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Message ID 1556191202-3245-2-git-send-email-joshi.k@samsung.com
State New
Headers show
Series
  • Extend write-hint framework, and add write-hint for Ext4 journal
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Commit Message

kanchan April 25, 2019, 11:19 a.m. UTC
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(+)

Patch
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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)