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| author |   jiangyiwen <jiangyiwen@huawei.com> | 2015-09-04 15:44:06 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-04 16:54:41 -0700 |
| commit | 807a7907114c7c703017ed7a96477a2eeb0d08e0 (patch) | |
| tree | fd4568e6269ef8264fb46c30fa1d83a45e11e90a /fs/ocfs2/namei.c | |
| parent | ocfs2/dlm: use list_for_each_entry instead of list_for_each (diff) | |
| download | linux-dev-807a7907114c7c703017ed7a96477a2eeb0d08e0.tar.xz linux-dev-807a7907114c7c703017ed7a96477a2eeb0d08e0.zip | |
ocfs2: set filesytem read-only when ocfs2_delete_entry failed.
In ocfs2_rename, it will lead to an inode with two entried(old and new) if
ocfs2_delete_entry(old) failed. Thus, filesystem will be inconsistent.
The case is described below:
ocfs2_rename
-> ocfs2_start_trans
-> ocfs2_add_entry(new)
-> ocfs2_delete_entry(old)
-> __ocfs2_journal_access *failed* because of -ENOMEM
-> ocfs2_commit_trans
So filesystem should be set to read-only at the moment.
Signed-off-by: Yiwen Jiang <jiangyiwen@huawei.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: Joel Becker <jlbec@evilplan.org>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | fs/ocfs2/namei.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 97c47d71efa7..1c43993e81b0 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -1569,12 +1569,25 @@ static int ocfs2_rename(struct inode *old_dir, status = ocfs2_find_entry(old_dentry->d_name.name, old_dentry->d_name.len, old_dir, &old_entry_lookup); - if (status) + if (status) { + if (!is_journal_aborted(osb->journal->j_journal)) { + ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " + "is not deleted.", + new_dentry->d_name.len, new_dentry->d_name.name, + old_dentry->d_name.len, old_dentry->d_name.name); + } goto bail; + } status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); if (status < 0) { mlog_errno(status); + if (!is_journal_aborted(osb->journal->j_journal)) { + ocfs2_error(osb->sb, "new entry %.*s is added, but old entry %.*s " + "is not deleted.", + new_dentry->d_name.len, new_dentry->d_name.name, + old_dentry->d_name.len, old_dentry->d_name.name); + } goto bail; } |