tree 661222cc79afdc9c8f7b9954b9868b8cd89184a2
parent e12dd7bd874cb1c8658d5e8c1eab5f91a71939dc
author Jaegeuk Kim <jaegeuk@kernel.org> 1462576783 -0700
committer Jaegeuk Kim <jaegeuk@kernel.org> 1462643096 -0700

f2fs: read node blocks ahead when truncating blocks

This patch enables reading node blocks in advance when truncating large
data blocks.

 > time rm $MNT/testfile (500GB) after drop_cachees
Before : 9.422 s
After  : 4.821 s

Reported-by: Stephen Bates <stephen.bates@microsemi.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>