On 06/07/2010 07:20 PM, Martin K. Petersen wrote: >>>>>> "Dave" == Dave Chinner <david@xxxxxxxxxxxxx> writes: > >>> Didn't you use to wait_on_page_writeback() in page_mkwrite()? > > Dave> The generic implementation of ->page_mkwrite > Dave> (block_page_mkwrite()) which XFS uses has never had a > Dave> wait_on_page_writeback() call in it. There's no call in the > Dave> generic write paths, either, hence my comment that only direct IO > Dave> on XFS will work. > > I guess that wait_on_page_writeback() was something I added when I used > XFS for DIF testing. > Do you remember some performance numbers that show degradation / sameness? What type of work loads? Thanks Boaz -- 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
