linux-kernel - [PATCH 2/3] ext3: don't inherit inappropriate inode flags from parent

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Message-Id: <1212583588-5754-3-git-send-email-duaneg@dghda.com>
Date:	Wed,  4 Jun 2008 13:46:27 +0100
From:	"Duane Griffin" <duaneg@...da.com>
To:	akpm@...ux-foundation.org
Cc:	Andreas Dilger <adilger@....com>, linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org, Duane Griffin <duaneg@...da.com>
Subject: [PATCH 2/3] ext3: don't inherit inappropriate inode flags from parent

At present INDEX is the only flag that new ext3 inodes do NOT inherit from
their parent. In addition prevent the flags DIRTY, ECOMPR, IMAGIC and
TOPDIR from being inherited.

Signed-off-by: Duane Griffin <duaneg@...da.com>

diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 7712682..1d9fe3f 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -559,7 +559,7 @@ got:
 	ei->i_dir_start_lookup = 0;
 	ei->i_disksize = 0;
 
-	ei->i_flags = EXT3_I(dir)->i_flags & ~EXT3_INDEX_FL;
+	ei->i_flags = EXT3_I(dir)->i_flags & EXT3_FL_INHERITED;
 	if (S_ISLNK(mode))
 		ei->i_flags &= ~(EXT3_IMMUTABLE_FL|EXT3_APPEND_FL);
 	/* dirsync only applies to directories */
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index 36c5403..4f7224a 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -178,6 +178,10 @@ struct ext3_group_desc
 #define EXT3_FL_USER_VISIBLE		0x0003DFFF /* User visible flags */
 #define EXT3_FL_USER_MODIFIABLE		0x000380FF /* User modifiable flags */
 
+/* Flags that should be inherited by new inodes from their parent. */
+#define EXT3_FL_INHERITED ~(EXT3_DIRTY_FL | EXT3_ECOMPR_FL | EXT3_INDEX_FL |\
+			    EXT3_IMAGIC_FL | EXT3_TOPDIR_FL)
+
 /*
  * Inode dynamic state flags
  */
-- 
1.5.3.7

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