From: Mikulas Patocka <mpatocka@xxxxxxxxxx> Date: Tue, 6 Apr 2010 19:29:57 -0400 (EDT) > Fix IDE taskfile with cfq scheduler > > When ide taskfile access is being used (for example with hdparm --security > commands) and cfq scheduler is selected, the scheduler crashes on BUG in > cfq_put_request. > > The reason is that the cfq scheduler is tracking counts of read and write > requests separately; the ide-taskfile subsystem allocates a read request and > then flips the flag to make it a write request. The counters in cfq will > mismatch. > > This patch changes ide-taskfile to allocate the READ or WRITE request as > required and don't change the flag later. > > Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx> Applied and queued up for -stable, thanks again Mikulas. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
