On Thu, 6 Sep 2007 17:31:53 +0300 "Marti Raudsepp" <marti@xxxxxxxxx> wrote: > Hi, > > My dmesg output contains a lot of warning messages from reiserfs and > I'm wondering if this is anything important: > ReiserFS: dm-0: warning: clm-2100: nesting info a different FS > > I'm running Hardened Gentoo kernel 2.6.16-r11 on AMD64. I've got three > reiserfs filesystems: one for root which is mounted directly from a > RAID1 array (/dev/md/2), and two are LVM volumes from another RAID1 > array (/dev/md/3); one of the latter has usrquota enabled. I'm not > really sure which block device "dm-0" refers to. The computer is doing > relatively little disk I/O most of the time. > > The comment in fs/reiserfs/journal.c says: > /* we've ended up with a handle from a different filesystem. > ** save it and restore on journal_end. This should never > ** really happen... > */ > > The "should never really happen" part made me wonder, is this anything > I should be worried about? Well, it's really not supposed to happen, and hopefully it indicates that someone is doing an allocation without GFP_NOFS when they really should be using it. A simple stack trace will show us pretty quickly. Can you try a patch to add a stack trace to this warning? I've attached it. -chris
diff -r 70b4267862e0 fs/reiserfs/journal.c --- a/fs/reiserfs/journal.c Mon Jul 09 00:00:31 2007 +0000 +++ b/fs/reiserfs/journal.c Mon Sep 10 09:37:39 2007 -0400 @@ -3165,6 +3165,7 @@ int journal_begin(struct reiserfs_transa */ reiserfs_warning(p_s_sb, "clm-2100: nesting info a different FS"); + WARN_ON(1); th->t_handle_save = current->journal_info; current->journal_info = th; }
