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Date: Sat, 08 Oct 2011 00:34:06 -0700
From: "Darrick J. Wong" <djwong@...ibm.com>
To: Andreas Dilger <adilger.kernel@...ger.ca>,
Theodore Tso <tytso@....edu>,
"Darrick J. Wong" <djwong@...ibm.com>
Cc: Sunil Mushran <sunil.mushran@...cle.com>,
Amir Goldstein <amir73il@...il.com>,
Andi Kleen <andi@...stfloor.org>,
Mingming Cao <cmm@...ibm.com>,
Joel Becker <jlbec@...lplan.org>, linux-ext4@...r.kernel.org,
Coly Li <colyli@...il.com>
Subject: [PATCH 08/47] mke2fs: Allow metadata checksums to be turned on at
mkfs time
Write out checksummed inodes even when writing out a zeroed table.
Signed-off-by: Darrick J. Wong <djwong@...ibm.com>
---
misc/mke2fs.c | 30 +++++++++++++++++++++++++++++-
1 files changed, 29 insertions(+), 1 deletions(-)
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 244e0c8..6e9f399 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -304,6 +304,27 @@ _("Warning: the backup superblock/group descriptors at block %u contain\n"
ext2fs_badblocks_list_iterate_end(bb_iter);
}
+static void write_reserved_inodes(ext2_filsys fs)
+{
+ errcode_t retval;
+ ext2_ino_t ino;
+ struct ext2_inode *inode;
+
+ retval = ext2fs_get_mem(EXT2_INODE_SIZE(fs->super), &inode);
+ if (retval) {
+ com_err("inode_init", retval,
+ "while allocating memory");
+ exit(1);
+ }
+ bzero(inode, EXT2_INODE_SIZE(fs->super));
+
+ for (ino = 1; ino < EXT2_FIRST_INO(fs->super); ino++)
+ ext2fs_write_inode_full(fs, ino, inode,
+ EXT2_INODE_SIZE(fs->super));
+
+ ext2fs_free_mem(&inode);
+}
+
static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed)
{
errcode_t retval;
@@ -349,6 +370,12 @@ static void write_inode_tables(ext2_filsys fs, int lazy_flag, int itable_zeroed)
ext2fs_zero_blocks2(0, 0, 0, 0, 0);
ext2fs_numeric_progress_close(fs, &progress,
_("done \n"));
+
+ /* Reserved inodes must always have correct checksums */
+ if (fs->super->s_creator_os == EXT2_OS_LINUX &&
+ fs->super->s_feature_ro_compat &
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
+ write_reserved_inodes(fs);
}
static void create_root_dir(ext2_filsys fs)
@@ -847,7 +874,8 @@ static __u32 ok_features[3] = {
EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
EXT4_FEATURE_RO_COMPAT_BIGALLOC|
- EXT4_FEATURE_RO_COMPAT_QUOTA
+ EXT4_FEATURE_RO_COMPAT_QUOTA|
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM
};
--
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