On (24/12/12 04:14), Matthew Wilcox wrote: > > We've got two reports [1] [2] (could be the same person) which > > suggest that ext4 may change page content while the page is under > > write(). The particular problem here the case when ext4 is on > > the zram device. zram compresses every page written to it, so if > > the page content can be modified concurrently with zram's compression > > then we can't really use zram with ext4. > > Do you set BLK_FEAT_STABLE_WRITES on zram? Yes, zram sets BLK_FEAT_STABLE_WRITES and BLK_FEAT_SYNCHRONOUS.
