possible deadlock in shmem_fallocate (4)

Michal Hocko mhocko at kernel.org
Wed Jul 15 06:36:39 UTC 2020


On Tue 14-07-20 10:32:20, Suren Baghdasaryan wrote:
[...]
> I'm not sure how we can annotate the fact that the inode_lock in
> generic_file_write_iter and in shmem_fallocate always operate on
> different inodes. Ideas?

I believe that the standard way is to use lockdep_set_class on your
backing inode. But asking lockdep experts would be better than relying
on my vague recollection

-- 
Michal Hocko
SUSE Labs


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