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Date:	Tue, 03 Jun 2008 15:41:19 -0700
From:	akpm@...ux-foundation.org
To:	mm-commits@...r.kernel.org
Cc:	hidehiro.kawai.ez@...achi.com, jack@...e.cz,
	linux-ext4@...r.kernel.org
Subject: + ext3-abort-ext3-if-the-journal-has-aborted.patch added to -mm tree


The patch titled
     ext3: abort ext3 if the journal has aborted
has been added to the -mm tree.  Its filename is
     ext3-abort-ext3-if-the-journal-has-aborted.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** 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/

------------------------------------------------------
Subject: ext3: abort ext3 if the journal has aborted
From: Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>

If the journal has aborted due to a checkpointing failure, we have to keep
the contents of the journal space.  ext3_put_super() detects the journal
abort, then it invokes ext3_abort() to make the filesystem read only and
keep needs_recovery flag.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>
Acked-by: Jan Kara <jack@...e.cz>
Cc: <linux-ext4@...r.kernel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

 fs/ext3/ioctl.c |   12 ++++++------
 fs/ext3/super.c |   11 +++++++++--
 2 files changed, 15 insertions(+), 8 deletions(-)

diff -puN fs/ext3/ioctl.c~ext3-abort-ext3-if-the-journal-has-aborted fs/ext3/ioctl.c
--- a/fs/ext3/ioctl.c~ext3-abort-ext3-if-the-journal-has-aborted
+++ a/fs/ext3/ioctl.c
@@ -239,7 +239,7 @@ setrsvsz_out:
 	case EXT3_IOC_GROUP_EXTEND: {
 		ext3_fsblk_t n_blocks_count;
 		struct super_block *sb = inode->i_sb;
-		int err;
+		int err, err2;
 
 		if (!capable(CAP_SYS_RESOURCE))
 			return -EPERM;
@@ -254,16 +254,16 @@ setrsvsz_out:
 		}
 		err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
 		journal_lock_updates(EXT3_SB(sb)->s_journal);
-		journal_flush(EXT3_SB(sb)->s_journal);
+		err2 = journal_flush(EXT3_SB(sb)->s_journal);
 		journal_unlock_updates(EXT3_SB(sb)->s_journal);
 group_extend_out:
 		mnt_drop_write(filp->f_path.mnt);
-		return err;
+		return (err) ? err : err2;
 	}
 	case EXT3_IOC_GROUP_ADD: {
 		struct ext3_new_group_data input;
 		struct super_block *sb = inode->i_sb;
-		int err;
+		int err, err2;
 
 		if (!capable(CAP_SYS_RESOURCE))
 			return -EPERM;
@@ -280,11 +280,11 @@ group_extend_out:
 
 		err = ext3_group_add(sb, &input);
 		journal_lock_updates(EXT3_SB(sb)->s_journal);
-		journal_flush(EXT3_SB(sb)->s_journal);
+		err2 = journal_flush(EXT3_SB(sb)->s_journal);
 		journal_unlock_updates(EXT3_SB(sb)->s_journal);
 group_add_out:
 		mnt_drop_write(filp->f_path.mnt);
-		return err;
+		return (err) ? err : err2;
 	}
 
 
diff -puN fs/ext3/super.c~ext3-abort-ext3-if-the-journal-has-aborted fs/ext3/super.c
--- a/fs/ext3/super.c~ext3-abort-ext3-if-the-journal-has-aborted
+++ a/fs/ext3/super.c
@@ -393,7 +393,8 @@ static void ext3_put_super (struct super
 	int i;
 
 	ext3_xattr_put_super(sb);
-	journal_destroy(sbi->s_journal);
+	if (journal_destroy(sbi->s_journal) < 0)
+		ext3_abort(sb, __func__, "Couldn't clean up the journal");
 	if (!(sb->s_flags & MS_RDONLY)) {
 		EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
 		es->s_state = cpu_to_le16(sbi->s_mount_state);
@@ -2388,7 +2389,13 @@ static void ext3_write_super_lockfs(stru
 
 		/* Now we set up the journal barrier. */
 		journal_lock_updates(journal);
-		journal_flush(journal);
+
+		/*
+		 * We don't want to clear needs_recovery flag when we failed
+		 * to flush the journal.
+		 */
+		if (journal_flush(journal) < 0)
+			return;
 
 		/* Journal blocked and flushed, clear needs_recovery flag. */
 		EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
_

Patches currently in -mm which might be from hidehiro.kawai.ez@...achi.com are

jbd-strictly-check-for-write-errors-on-data-buffers.patch
jbd-ordered-data-integrity-fix.patch
jbd-abort-when-failed-to-log-metadata-buffers.patch
jbd-fix-error-handling-for-checkpoint-io.patch
ext3-abort-ext3-if-the-journal-has-aborted.patch

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