On 6/27/24 8:12 AM, Jiwei Sun wrote: > From: Jiwei Sun <sunjw10@xxxxxxxxxx> > > If the following configuration is set > CONFIG_LOCKDEP=y > > The following warning log appears, Was just about to send this. :) I had talked to dchinner about this and he also suggested that this was missed in the series that removed GFP_NOFS, i.e. [PATCH 00/12] xfs: remove remaining kmem interfaces and GFP_NOFS usage at https://lore.kernel.org/linux-mm/20240622094411.GA830005@ceph-admin/T/ So, I think this could also use one or both of: Fixes: 204fae32d5f7 ("xfs: clean up remaining GFP_NOFS users") Fixes: 94a69db2367e ("xfs: use __GFP_NOLOCKDEP instead of GFP_NOFS") ... > This is a false positive. If a node is getting reclaimed, it cannot be > the target of a flistxattr operation. Commit 6dcde60efd94 ("xfs: more > lockdep whackamole with kmem_alloc*") has the similar root cause. > > Fix the issue by adding __GFP_NOLOCKDEP in order to shut up lockdep. > > Signed-off-by: Jiwei Sun <sunjw10@xxxxxxxxxx> > Suggested-by: Adrian Huang <ahuang12@xxxxxxxxxx> > --- > fs/xfs/xfs_attr_list.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c > index 5c947e5ce8b8..506ade0befa4 100644 > --- a/fs/xfs/xfs_attr_list.c > +++ b/fs/xfs/xfs_attr_list.c > @@ -114,7 +114,8 @@ xfs_attr_shortform_list( > * It didn't all fit, so we have to sort everything on hashval. > */ > sbsize = sf->count * sizeof(*sbuf); > - sbp = sbuf = kmalloc(sbsize, GFP_KERNEL | __GFP_NOFAIL); > + sbp = sbuf = kmalloc(sbsize, GFP_KERNEL | __GFP_NOFAIL | > + __GFP_NOLOCKDEP); Minor nitpick, style-wise we seem to do: sbp = sbuf = kmalloc(sbsize, GFP_KERNEL | __GFP_NOLOCKDEP | __GFP_NOFAIL); in most other places, and not split the flags onto 2 lines, since you need to add a line anyway. Otherwise, Acked-by: Eric Sandeen <sandeen@xxxxxxxxxx> > /* > * Scan the attribute list for the rest of the entries, storing
