Lines Matching full:zeroing

219  * Does an unaligned DIO write require partial block zeroing?
221  * Partial block zeroing is performed only for the head and tail blocks
224  * are written as whole blocks without zeroing.
226  * When zeroing is required, two concurrent unaligned DIO writes to the
229  * zeroing is not required, shared lock is safe -- block allocation and
488  *    safe unless the DIO layer needs to perform partial block zeroing --
491  *    in-flight DIO to avoid races with concurrent partial block zeroing.
515 	 * For unaligned writes, check whether partial block zeroing will be  in ext4_dio_write_checks()
517 	 * concurrent DIO that could race with the zeroing.  in ext4_dio_write_checks()
542 	 * needs partial block zeroing or is extending the file, we must wait  in ext4_dio_write_checks()
546 	 *    our partial block zeroing, and force synchronous completion so we  in ext4_dio_write_checks()
547 	 *    don't leave in-flight zeroing bios for the next writer to drain.  in ext4_dio_write_checks()