On Tue 18-12-18 14:06:11, Hou Tao wrote: [...] > In my understanding (correct me if I am wrong), there are three ways through which > reclamation will invoked fs related code and may cause dead-lock: > > (1) write-back dirty pages. Not possible for squashfs. only from kswapd context. So not relevant to OOM killer/ > (2) the reclamation of inodes & dentries. The current file is in-use, so it will be not > reclaimed, and for other reclaimable inodes, squashfs_destroy_inode() will > be invoked and it doesn't take any locks. There are other inodes, not only those in use. Do you use any locks that could be taken from an inode teardown? -- Michal Hocko SUSE Labs
