Call Trace:
 [<c0141131>] cache_flusharray+0x41/0xb0
 [<c0141398>] kmem_cache_free+0x38/0x40
 [<c0158c4f>] free_buffer_head+0x1f/0x70
 [<c0158a19>] try_to_free_buffers+0x59/0x90
 [<c019e65d>] journal_try_to_free_buffers+0xbd/0x130
 [<c018fe20>] ext3_releasepage+0x30/0x60
 [<c0156d99>] try_to_release_page+0x39/0x50
 [<c014349f>] shrink_list+0x35f/0x440
 [<c0143707>] shrink_cache+0x187/0x430
 [<c017cf97>] mb_cache_shrink_fn+0x167/0x170
 [<c0142e62>] shrink_slab+0x82/0x1b0
 [<c0143ff2>] shrink_zone+0xb2/0xe0
 [<c014447e>] balance_pgdat+0x24e/0x2d0
 [<c01445dc>] kswapd+0xdc/0x100
 [<c0130c30>] autoremove_wake_function+0x0/0x40
 [<c0102dc2>] ret_from_fork+0x6/0x14
 [<c0130c30>] autoremove_wake_function+0x0/0x40
 [<c0144500>] kswapd+0x0/0x100
 [<c010129d>] kernel_thread_helper+0x5/0x18
Code: 7e 8d 46 38 89 04 24 8b 44 24 1c 8b 15 10 c0 53 c0 8b 0c b8 8d 81 00 00 00
 40 c1 e8 0c c1 e0 05 8b 5c 02 1c 8b 53 04 8b ß3 89 02 <89> 50 04 8b 43 0c c7 03
 00 01 10 00 29 c1 c7 43 04 00 02 20 00
 <6>note: kswapd0[196] exited with preempt_count 1