Theodore Ts'o 5068969686 ext4: make sure directory and symlink blocks are revoked
When an inode gets unlinked, the functions ext4_clear_blocks() and
ext4_remove_blocks() call ext4_forget() for all the buffer heads
corresponding to the deleted inode's data blocks.  If the inode is a
directory or a symlink, the is_metadata parameter must be non-zero so
ext4_forget() will revoke them via jbd2_journal_revoke().  Otherwise,
if these blocks are reused for a data file, and the system crashes
before a journal checkpoint, the journal replay could end up
corrupting these data blocks.

Thanks to Curt Wohlgemuth for pointing out potential problems in this
area.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
2009-11-23 07:17:34 -05:00
..
2009-11-02 08:43:45 -06:00
2009-06-11 21:36:14 -04:00
2009-10-01 16:11:16 -07:00
2009-07-12 12:22:34 -07:00
2009-10-04 15:05:10 -07:00
2009-09-23 07:39:28 -07:00
2009-09-30 12:19:44 -05:00
2009-06-17 00:36:36 -04:00
2009-07-12 12:22:34 -07:00
2009-11-04 10:24:52 +01:00
2009-07-12 12:22:34 -07:00
2009-09-23 18:13:10 -07:00
2009-10-20 18:02:33 -04:00
2009-09-23 07:39:30 -07:00
2009-09-24 08:41:47 -04:00
2009-06-17 00:36:37 -04:00
2009-06-18 13:03:46 -07:00
2009-09-24 08:41:47 -04:00
2009-09-24 07:21:01 -07:00
2009-09-24 07:21:03 -07:00
2009-06-18 13:03:41 -07:00
2009-09-24 07:21:01 -07:00
2009-09-24 07:47:27 -04:00
2009-04-07 08:31:16 -07:00
2009-10-22 08:11:44 +09:00
2009-10-04 15:05:10 -07:00
2009-04-20 23:02:52 -04:00
2009-09-23 07:39:29 -07:00