933111f98f
* in the read vnode operator, check for IO_SYNC being set in the ioflag and synchronously update the file's meta-data if appropriate. * in the write vnode operator, update the appropriate checks for IO_SYNC being set in the ioflag to reflect that IO_DSYNC is now inclusive-or'ed into IO_SYNC, and require all IO_SYNC bits to be set for operations defined by synchronized I/O file integrity completion but not by synchronized I/O data integrity completion.