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ext4: make online defrag error reporting consistent

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Make the error reporting behavior resulting from the unsupported use
of online defrag on files with data journaling enabled consistent with
that implemented for bigalloc file systems. Difference found with
ext4/308.

Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Eric Whitney 2015-06-21 21:38:03 -04:00 committed by Theodore Ts'o
parent c27e43a10c
commit 04e22412f4
1 changed files with 7 additions and 3 deletions
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10
fs/ext4/move_extent.c
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@ -571,12 +571,16 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp, __u64 orig_blk,
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 */
/* TODO: it's not obvious how to swap blocks for inodes with full
journaling enabled */
if (ext4_should_journal_data(orig_inode) ||
ext4_should_journal_data(donor_inode)) {
return -EINVAL;
ext4_msg(orig_inode->i_sb, KERN_ERR,
"Online defrag not supported with data journaling");
return -EOPNOTSUPP;
}
/* Protect orig and donor inodes against a truncate */
lock_two_nondirectories(orig_inode, donor_inode);