On Mon, Dec 11 2006, Vasily Tarasov wrote:
> CFQ I/O scheduler does the following actions to
> find out whether the request is sync:
>
> rw = rq_data_dir(rq); => possible values for rw are 0 or 1
>
> static inline pid_t cfq_queue_pid(struct task_struct *task, int rw)
> {
> if (rw == READ || rw == WRITE_SYNC) => second condition is always false
> return task->pid;
>
> return CFQ_KEY_ASYNC;
> }
>
> The following patch fixes the bug by adding sync parameter,
> wich is obtained through bio_sync macros.
Good catch! Applied.
--
Jens Axboe
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
