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Date:	Thu, 21 Jun 2007 10:55:38 +0900
From:	"Takashi Sato" <t-sato@...jp.nec.com>
To:	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [RFC][PATCH 8/10] Release reserved block

- Release reserved blocks if defrag failed.

Signed-off-by: Takashi Sato <t-sato@...jp.nec.com>
Signed-off-by: Akira Fujita <a-fujita@...jp.nec.com>
---
diff -X Online-Defrag_linux-2.6.19-rc6-git/Documentation/dontdiff -upNr Online-Defrag_linux-2.6.19-rc6-git-BLOCK_RELEASE/fs/ext4/extents.c Online-Defrag_linux-2.6.19-rc6-git-lg-mballoc-bugfix/fs/ext4/extents.c
--- Online-Defrag_linux-2.6.19-rc6-git-BLOCK_RELEASE/fs/ext4/extents.c	2007-06-19 20:19:14.000000000 +0900
+++ Online-Defrag_linux-2.6.19-rc6-git-lg-mballoc-bugfix/fs/ext4/extents.c	2007-06-18 14:23:07.000000000 +0900
@@ -3066,6 +3066,10 @@ int ext4_ext_ioctl(struct inode *inode, 
 
 		err = ext4_ext_defrag_victim(filp, &ext_info);
 
+	} else if (cmd == EXT4_IOC_BLOCK_RELEASE) {
+		mutex_lock(&EXT4_I(inode)->truncate_mutex);
+		ext4_discard_reservation(inode);
+		mutex_unlock(&EXT4_I(inode)->truncate_mutex);
 	} else if (cmd == EXT4_IOC_DEFRAG) {
 		struct ext4_ext_defrag_data defrag;
 
-
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