On 08/10/2016 02:06 PM, Linus Torvalds wrote:
On Tue, Aug 9, 2016 at 10:39 PM, kernel test robot <xiaolong.ye@xxxxxxxxx> wrote:[ 1537.558739] nfsd: last server has exited, flushing export cache [ 1540.627795] BUG: Dentry ffff880027d7c540{i=1846f,n=0a} still in use (1) [unmount of btrfs vda] [ 1540.633915] ------------[ cut here ]------------ [ 1540.636551] WARNING: CPU: 0 PID: 20552 at fs/dcache.c:1474 umount_check+0x72/0x80Hmm. Adding Al and the btrfs people to the cc, and expanding the nfs list. Unlike the flakey-IO warning, this one sounds like a real issue. Whether it's some dentry leak by nfsd or a VFS or btrfs issue, I can't begin to guess. Al, ideas? More information in the original email on lkml.
I'm not subscribed to lkml and for some reason I can't find the original email in any of the lkml/linux-nfs archives. Could you forward more of the details? Thanks,
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