On Sat, Jul 20, 2013 at 09:48:28AM -0500, Mike Christie wrote: > What about the attached only compile tested patch. The patch has the mq > block code work like the non mq code for bio cleanups. Not sure if it is related to the patch or not, but it never returns from wait_for_completion_io(&wait) in blkdev_issue_flush(): # ps axl | awk '$10 ~ /D\+/' 4 0 938 879 20 0 111216 656 blkdev D+ pts/1 0:00 fdisk/dev/sda # # cat /proc/938/stack [<ffffffff812a8a5c>] blkdev_issue_flush+0xfc/0x160 [<ffffffff811ac606>] blkdev_fsync+0x96/0xc0 [<ffffffff811a2f4d>] do_fsync+0x5d/0x90 [<ffffffff811a3330>] SyS_fsync+0x10/0x20 [<ffffffff81611582>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff Any ideas? Thanks! -- Regards, Alexander Gordeev agordeev@xxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html