diff options
| author | Dmitry Monakhov <dmonakhov@openvz.org> | 2010-05-30 22:49:33 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-02 10:21:14 -0700 |
| commit | 449147576c7045a183fc2283b103c9a4f290b3de (patch) | |
| tree | 155ed366f2705b3daf1a2cb3f7087fbd5e2890b7 /fs/ext4 | |
| parent | 2c20b11766ad108f31b550fe28a32cf2ec445b19 (diff) | |
ext4: Handle non empty on-disk orphan link
commit 6e3617e579e070d3655a93ee9ed7149113e795e0 upstream (as of v2.6.33-git11)
In case of truncate errors we explicitly remove inode from in-core
orphan list via orphan_del(NULL, inode) without modifying the on-disk list.
But later on, the same inode may be inserted in the orphan list again
which will result the on-disk linked list getting corrupted. If inode
i_dtime contains valid value, then skip on-disk list modification.
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/namei.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 8bd1e20964da..1dd84f665aba 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2020,6 +2020,13 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode) err = ext4_reserve_inode_write(handle, inode, &iloc); if (err) goto out_unlock; + /* + * Due to previous errors inode may be already a part of on-disk + * orphan list. If so skip on-disk list modification. + */ + if (NEXT_ORPHAN(inode) && NEXT_ORPHAN(inode) <= + (le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))) + goto mem_insert; /* Insert this inode at the head of the on-disk orphan list... */ NEXT_ORPHAN(inode) = le32_to_cpu(EXT4_SB(sb)->s_es->s_last_orphan); @@ -2037,6 +2044,7 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode) * * This is safe: on error we're going to ignore the orphan list * anyway on the next recovery. */ +mem_insert: if (!err) list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan); |