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ext4: online defrag is not supported for journaled files

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Proper block swap for inodes with full journaling enabled is
truly non obvious task. In order to be on a safe side let's
explicitly disable it for now.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
This commit is contained in:
Dmitry Monakhov 2012-09-26 12:32:54 -04:00 committed by Theodore Ts'o
parent 03bd8b9b89
commit f066055a34
1 changed files with 6 additions and 1 deletions
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7
fs/ext4/move_extent.c
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@ -1142,7 +1142,12 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
orig_inode->i_ino, donor_inode->i_ino);
return -EINVAL;
}
/* TODO: This is non obvious task to swap blocks for inodes with full
jornaling enabled */
if (ext4_should_journal_data(orig_inode) ||
ext4_should_journal_data(donor_inode)) {
return -EINVAL;
}
/* Protect orig and donor inodes against a truncate */
mext_inode_double_lock(orig_inode, donor_inode);