tree be478e2c4988612eef88a1669f774dd8f9f9b8af
parent 20ed0535d35b74c9e4fa5777766d6e836fe3c90c
author Bob Peterson <rpeterso@redhat.com> 1319732166 -0400
committer Steven Whitehouse <swhiteho@redhat.com> 1320745932 +0000

GFS2: Add readahead to sequential directory traversal

This patch adds read-ahead capability to GFS2's
directory hash table management.  It greatly improves
performance for some directory operations.  For example:
In one of my file systems that has 1000 directories, each
of which has 1000 files, time to execute a recursive
ls (time ls -fR /mnt/gfs2 > /dev/null) was reduced
from 2m2.814s on a stock kernel to 0m45.938s.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>