From 86c4f6d85595cd7da635dc6985d27bfa43b1ae10 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 27 Apr 2011 18:20:44 +0200 Subject: [PATCH] ext3: Fix fs corruption when make_indexed_dir() fails When make_indexed_dir() fails (e.g. because of ENOSPC) after it has allocated block for index tree root, we did not properly mark all changed buffers dirty. This lead to only some of these buffers being written out and thus effectively corrupting the directory. Fix the issue by marking all changed data dirty even in the error failure case. CC: stable@kernel.org Signed-off-by: Jan Kara --- fs/ext3/namei.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c index f6ce3e7..34b6d9b 100644 --- a/fs/ext3/namei.c +++ b/fs/ext3/namei.c @@ -1416,10 +1416,19 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry, frame->at = entries; frame->bh = bh; bh = bh2; + /* + * Mark buffers dirty here so that if do_split() fails we write a + * consistent set of buffers to disk. + */ + ext3_journal_dirty_metadata(handle, frame->bh); + ext3_journal_dirty_metadata(handle, bh); de = do_split(handle,dir, &bh, frame, &hinfo, &retval); - dx_release (frames); - if (!(de)) + if (!de) { + ext3_mark_inode_dirty(handle, dir); + dx_release(frames); return retval; + } + dx_release(frames); return add_dirent_to_buf(handle, dentry, inode, de, bh); } @@ -2282,7 +2291,7 @@ out_stop: return err; err_drop_inode: unlock_new_inode(inode); - iput (inode); + iput(inode); return err; } -- 2.7.4