Re: [PATCH 2/2] xfs: attach inode to dquot in xfs_bui_item_recover

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, Sep 17, 2020 at 02:54:56PM +1000, Dave Chinner wrote:
> On Wed, Sep 16, 2020 at 08:28:56PM -0700, Darrick J. Wong wrote:
> > From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> > 
> > In the bmap intent item recovery code, we must be careful to attach the
> > inode to its dquots (if quotas are enabled) so that a change in the
> > shape of the bmap btree doesn't cause the quota counters to be
> > incorrect.
> > 
> > Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> > ---
> >  fs/xfs/xfs_bmap_item.c |    5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > 
> > diff --git a/fs/xfs/xfs_bmap_item.c b/fs/xfs/xfs_bmap_item.c
> > index 815a0563288f..598f713831c9 100644
> > --- a/fs/xfs/xfs_bmap_item.c
> > +++ b/fs/xfs/xfs_bmap_item.c
> > @@ -24,6 +24,7 @@
> >  #include "xfs_error.h"
> >  #include "xfs_log_priv.h"
> >  #include "xfs_log_recover.h"
> > +#include "xfs_quota.h"
> >  
> >  kmem_zone_t	*xfs_bui_zone;
> >  kmem_zone_t	*xfs_bud_zone;
> > @@ -498,6 +499,10 @@ xfs_bui_item_recover(
> >  	if (error)
> >  		goto err_inode;
> >  
> > +	error = xfs_qm_dqattach(ip);
> > +	if (error)
> > +		goto err_inode;
> 
> Won't this deadlock as the inode is already locked when it is
> returned by xfs_iget()?

DOH, yes.  The patch "xfs: clean up xfs_bui_item_recover
iget/trans_alloc/ilock ordering" obscures that...

--D

> Cheers,
> 
> Dave.
> -- 
> Dave Chinner
> david@xxxxxxxxxxxxx



[Index of Archives]     [XFS Filesystem Development (older mail)]     [Linux Filesystem Development]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux RAID]     [Linux SCSI]


  Powered by Linux