On Tue, Feb 2, 2021 at 5:41 AM Huang Jianan via fuse-devel <fuse-devel@xxxxxxxxxxxxxxxxxxxxx> wrote: > > We found the following deadlock situations in low memory scenarios: > Thread A Thread B > - __writeback_single_inode > - fuse_write_inode > - fuse_simple_request > - __fuse_request_send > - request_wait_answer > - fuse_dev_splice_read > - fuse_copy_fill > - __alloc_pages_direct_reclaim > - do_shrink_slab > - super_cache_scan > - shrink_dentry_list > - dentry_unlink_inode > - iput_final > - inode_wait_for_writeback On what kernel are you seeing this? I don't see how it can happen on upstream kernels, since there's a "write_inode_now(inode, 1)" call in fuse_release() and nothing can dirty the inode after the file has been released. Thanks, Miklos
