Carlos and Dave, On Tue, Aug 21, 2012 at 09:21:10AM +1000, Dave Chinner wrote: > On Mon, Aug 20, 2012 at 07:47:51PM -0300, Carlos Maiolino wrote: > > Thanks for the comments. > > > > > > What was the symptom that led to the discovery of this problem? > > > > > > Reviewed-by: Ben Myers <bpm@xxxxxxx> > > > > > > > It started with the messages like the example below being logged by syslog: > > > > shrink_slab: xfs_buftarg_shrink+0x0/0x160 [xfs] negative objects to delete nr=-61993820 > > shrink_slab: xfs_buftarg_shrink+0x0/0x160 [xfs] negative objects to delete nr=-146 > > shrink_slab: xfs_buftarg_shrink+0x0/0x160 [xfs] negative objects to delete nr=-240601220 > > shrink_slab: xfs_buftarg_shrink+0x0/0x160 [xfs] negative objects to delete nr=-152 > > shrink_slab: xfs_buftarg_shrink+0x0/0x160 [xfs] negative objects to delete nr=-2921236993 > > > > These messages came from shrink_slab(). > > Worth noting is that this warning came from a RHEL kernel, not a > mainline kernel. The mainline kernels don't screw up the nr_to_scan > calculations when a negative object count is returned to them. > Hence mainline kernels are not impacted by the accounting bug at > all... Thanks for the additional information. Sometimes it is helpful to know the symptom along with the fix. Regards, Ben _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
