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Subject[PATCH 3/4] ext3: abort ext3 if the journal has aborted
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@hitachi.com>
Acked-by: Jan Kara <jack@suse.cz>
---
fs/ext3/ioctl.c | 12 ++++++++----
fs/ext3/super.c | 11 +++++++++--
2 files changed, 17 insertions(+), 6 deletions(-)

Index: linux-2.6.26-rc8-mm1/fs/ext3/ioctl.c
===================================================================
--- linux-2.6.26-rc8-mm1.orig/fs/ext3/ioctl.c
+++ linux-2.6.26-rc8-mm1/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;
@@ -254,8 +254,10 @@ 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);
+ if (err == 0)
+ err = err2;
group_extend_out:
mnt_drop_write(filp->f_path.mnt);
return err;
@@ -263,7 +265,7 @@ group_extend_out:
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;
@@ -280,8 +282,10 @@ 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);
+ if (err == 0)
+ err = err2;
group_add_out:
mnt_drop_write(filp->f_path.mnt);
return err;
Index: linux-2.6.26-rc8-mm1/fs/ext3/super.c
===================================================================
--- linux-2.6.26-rc8-mm1.orig/fs/ext3/super.c
+++ linux-2.6.26-rc8-mm1/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);



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