tree 3a52ddd6ae7663b0cdd52a9eab059711626ae491
parent e6b5d30104db5f34110678ecab14988f1f1eff63
author Peng Tao <bergwolf@gmail.com> 1247491817 -0400
committer Theodore Ts'o <tytso@mit.edu> 1247491817 -0400

ext4: fix null handler of ioctls in no journal mode

The EXT4_IOC_GROUP_ADD and EXT4_IOC_GROUP_EXTEND ioctls should not
flush the journal in no_journal mode.  Otherwise, running resize2fs on
a mounted no_journal partition triggers the following error messages:

BUG: unable to handle kernel NULL pointer dereference at 00000014
IP: [<c039d282>] _spin_lock+0x8/0x19
*pde = 00000000 
Oops: 0002 [#1] SMP

Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>