@Tim Gardner on 2009-04-30:
> @Derek - that patch is already in Jaunty.
>
> static void ext4_mb_add_n_trim(struct ext4_allocation_context *ac)
> ...
> list_for_each_entry_rcu(tmp_pa, &lg->lg_prealloc_list[order],
> pa_inode_list) {
> spin_lock(&tmp_pa->pa_lock);
> if (tmp_pa->pa_deleted) {
> ....
I don't think it is: currently in git://kernel.ubuntu.com/ubuntu/ubuntu-
jaunty.git (or is the current Jaunty kernel tree somewhere else?),
fs/ext4/mballoc.c reads
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-jaunty.git;a=blob;f=fs/ext4/mballoc.c;h=add854a140a1c3b0207daaaab0e92d3cca5bb882;hb=HEAD#l4418
...
spin_lock(&tmp_pa->pa_lock);
if (tmp_pa->pa_deleted) {
spin_unlock(&pa->pa_lock);
continue;
}
...
while in mainline also the latter pa-> is tmp_pa->. Same for the linux-
image-2.6.28-11-generic 2.6.28-11.42 tarball.
Has anyone tried to reproduce the bug with this change applied?
--
Soft lockups (freezes) when deleting files from ext4 partitions on 2.6.28
https://bugs.launchpad.net/bugs/330824
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