On Fri, Nov 17, 2017 at 12:03 AM, Vivek Goyal <vgoyal@xxxxxxxxxx> wrote: > If an inode has been copied up metadata only, then we need to query the > number of blocks from lower and fill up the stat->st_blocks. > > We need to be careful about races where we are doing stat on one cpu and > data copy up is taking place on other cpu. We want to return stat->st_blocks > either from lower or stable upper and not something in between. Hence, > ovl_has_upperdata() is called first to figure out whether block reporting > will take place from lower or upper. > > Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx> Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
