ext4: Fix potential inode allocation soft lockup in Orlov allocator
If the Orlov allocator is having trouble finding an appropriate block
group, the fallback code could loop forever, causing a soft lockup
warning in find_group_orlov():
BUG: soft lockup - CPU#0 stuck for 61s! [cp:11728]
...
Pid: 11728, comm: cp Not tainted (2.6.30-rc1-dirty #77) Lenovo
EIP: 0060:[<c021650e>] EFLAGS: 00000246 CPU: 0
EIP is at ext4_get_group_desc+0x54/0x9d
...
Call Trace:
[<c0218021>] find_group_orlov+0x2ee/0x334
[<c0120a5f>] ? sched_clock+0x8/0xb
[<c02188e3>] ext4_new_inode+0x2cf/0xb1a
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
1 file changed