From e902ec9906e844f4613fa6190c6fa65f162dc86e Mon Sep 17 00:00:00 2001
From: Jiro SEKIBA <jir@unicus.jp>
Date: Sat, 30 Jan 2010 18:06:35 +0900
Subject: nilfs2: issue discard request after cleaning segments

This adds a function to send discard requests for given array of
segment numbers, and calls the function when garbage collection
succeeded.

Signed-off-by: Jiro SEKIBA <jir@unicus.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
---
 include/linux/nilfs2_fs.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/linux/nilfs2_fs.h')

diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index 3fe02cf8b65a..640702e97457 100644
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -153,6 +153,7 @@ struct nilfs_super_root {
 						   semantics also for data */
 #define NILFS_MOUNT_NORECOVERY		0x4000  /* Disable write access during
 						   mount-time recovery */
+#define NILFS_MOUNT_DISCARD		0x8000  /* Issue DISCARD requests */
 
 
 /**
-- 
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