On Thu, Mar 28, 2013 at 11:26:58PM +0400, Andrey Sidorov wrote: > Improve mb_free_blocks speed by clearing entire range at once instead of > iterating over each bit. Freeing block-by-block also makes buddy bitmap > subtree flip twice making most of the work a no-op. Very few bits in buddy > bitmap require change, e.g. freeing entire group is a 1 bit flip only. > As a result, releasing blocks of 60G file now takes 5ms instead of 2.7s. > This is especially good for non-preemptive kernels as there is no > rescheduling during release. > > Signed-off-by: Andrey Sidorov <qrxd43@xxxxxxxxxxxx> Thanks, added to the dev branch for testing. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
