Re: [PATCH] writeback: Don't wait for completion inwriteback_inodes_sb_nr
From: Christoph Hellwig
Date: Tue Jul 19 2011 - 12:53:52 EST
On Thu, Jul 14, 2011 at 09:29:34AM -0700, Curt Wohlgemuth wrote:
> Your patch looks good to me, in that it does hit all the bdevs with
> both WB_SYNC_NONE and SYNC_ALL. However, I still say that the call to
> wakeup_flusher_threads() in sys_sync() is superfluous, at least as
> long as writeback_inodes_sb() waits for completion of the work item
> that it enqueues.
"sys_sync(): fix 16% performance regression in ffsb create_4k test"
suggests we need the wakeup_flusher_threads. We might be able to get
rid of the writeback_inodes_sb call if we're lucky.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/