Hi, Since upgrading my Sheevaplug from 3.7.2 to 3.13.6 (FDT) I'm seeing mvsdio f1090000.mvsdio: unhandled interrupt status=0x8810 en=0x0000 pio=0 at varied timings. In addition to that, kernel seems excessively busy doing writeback via workqueue (without success?): [14909.275124] kworker/u2:2 R running 0 2001 2 0x00000000 [14909.275137] Workqueue: writeback bdi_writeback_workfn (flush-179:0) [14909.275157] [<c0351df8>] (__schedule+0x180/0x38c) from [<c0034a24>] (__cond_resched+0x24/0x34) [14909.275172] [<c0034a24>] (__cond_resched+0x24/0x34) from [<c0034a70>] (__cond_resched_lock+0x3c/0x44) [14909.275187] [<c0034a70>] (__cond_resched_lock+0x3c/0x44) from [<c00b8a2c>] (writeback_sb_inodes+0x2b0/0x348) [14909.275201] [<c00b8a2c>] (writeback_sb_inodes+0x2b0/0x348) from [<c00b8b34>] (__writeback_inodes_wb+0x70/0xac) [14909.275214] [<c00b8b34>] (__writeback_inodes_wb+0x70/0xac) from [<c00b8cf0>] (wb_writeback+0x180/0x190) [14909.275228] [<c00b8cf0>] (wb_writeback+0x180/0x190) from [<c00b91c0>] (bdi_writeback_workfn+0x144/0x324) [14909.275243] [<c00b91c0>] (bdi_writeback_workfn+0x144/0x324) from [<c00286b8>] (process_one_work+0x104/0x358) [14909.275258] [<c00286b8>] (process_one_work+0x104/0x358) from [<c0028ce8>] (worker_thread+0x134/0x38c) [14909.275273] [<c0028ce8>] (worker_thread+0x134/0x38c) from [<c002dec4>] (kthread+0xb0/0xcc) [14909.275287] [<c002dec4>] (kthread+0xb0/0xcc) from [<c0009490>] (ret_from_fork+0x14/0x24) (eating about 50% CPU time with variations between 10% and 90%) Dirty pages accumulate and calls to `sync` do not write those back to storage. Any idea what it could be and how to fix it? I get same results with 3.14-rc7. Bruno -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
