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ext4: truncate_inode_pages() in orphan cleanup path

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Currently we do not tell mm to zero out tail of the page before truncate
in orphan_cleanup(). This is ok, because the page should not be
uptodate, however this may eventually change and I might cause problems.

Call truncate_inode_pages() as precautionary measure. Thanks Jan Kara
for pointing this out.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Lukas Czerner 2013-05-27 23:32:35 -04:00 committed by Theodore Ts'o
parent eb3544c6fc
commit 55f252c9f5
1 changed files with 1 additions and 0 deletions
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fs/ext4/super.c
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@ -2170,6 +2170,7 @@ static void ext4_orphan_cleanup(struct super_block *sb,
jbd_debug(2, "truncating inode %lu to %lld bytes\n",
inode->i_ino, inode->i_size);
mutex_lock(&inode->i_mutex);
truncate_inode_pages(inode->i_mapping, inode->i_size);
ext4_truncate(inode);
mutex_unlock(&inode->i_mutex);
nr_truncates++;