Hi Ben, > > 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(). After that I've added a second counter into the xfs_buftarg_shrink() to check the amount of elements in list (via list_for_each() macro) to confirm the discrepancy between the counter and the real number of elements in list, and last, Eric added a second and local counter to xfs_buftarg_shrink, to account the number of buffers being added and removed from the dispose list into each call to xfs_buftarg_shrink(), where, when the problem started, we could see a wrong number of buffers beind added and/or removed from the dispose list. Cheers. -- --Carlos _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
