The patch titled
ext3: don't inherit inappropriate inode flags from parent
has been added to the -mm tree. Its filename is
ext3-dont-inherit-inappropriate-inode-flags-from-parent.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
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Subject: ext3: don't inherit inappropriate inode flags from parent
From: "Duane Griffin" <[email protected]>
Fix the TOPDIR flag inheritance bug reported at
http://bugzilla.kernel.org/show_bug.cgi?id=9866.
Some file attributes have sticky behaviour in ext2/3 whereas I believe
it should not. Namely, a directory marked with chattr +T serves "to be
the top of directory hierarchies for the purposes of the Orlov block
allocator", as the manpage says.
It seems wrong that subdirectories stickily inherit the +T flag: they
are obviously not top-level! Even files get the T attribute this way,
even though the chattr manpages only documents it for directories.
Also prevent inheritance of other flags that Andreas Dilger identified as
inappropriate to inherit
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 <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
fs/ext3/ialloc.c | 2 +-
include/linux/ext3_fs.h | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff -puN fs/ext3/ialloc.c~ext3-dont-inherit-inappropriate-inode-flags-from-parent fs/ext3/ialloc.c
--- a/fs/ext3/ialloc.c~ext3-dont-inherit-inappropriate-inode-flags-from-parent
+++ a/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 -puN include/linux/ext3_fs.h~ext3-dont-inherit-inappropriate-inode-flags-from-parent include/linux/ext3_fs.h
--- a/include/linux/ext3_fs.h~ext3-dont-inherit-inappropriate-inode-flags-from-parent
+++ a/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
*/
_
Patches currently in -mm which might be from [email protected] are
jbd-replace-potentially-false-assertion-with-if-block.patch
jbd-eliminate-duplicated-code-in-revocation-table-init-destroy-functions.patch
jbd-tidy-up-revoke-cache-initialisation-and-destruction.patch
ext2-dont-inherit-inappropriate-inode-flags-from-parent.patch
ext3-dont-inherit-inappropriate-inode-flags-from-parent.patch
ext4-dont-inherit-inappropriate-inode-flags-from-parent.patch