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| author | Bob Peterson <rpeterso@redhat.com> | 2011-10-27 18:16:06 +0200 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2011-11-08 10:52:12 +0100 |
| commit | dfe4d34b39b80faff52489f950a18523da7581bf (patch) | |
| tree | be478e2c4988612eef88a1669f774dd8f9f9b8af /fs/gfs2/export.c | |
| parent | GFS2: Fix up REQ flags (diff) | |
| download | linux-dfe4d34b39b80faff52489f950a18523da7581bf.tar.xz linux-dfe4d34b39b80faff52489f950a18523da7581bf.zip | |
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>
Diffstat (limited to 'fs/gfs2/export.c')
| -rw-r--r-- | fs/gfs2/export.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/gfs2/export.c b/fs/gfs2/export.c index fe9945f2ff72..70ba891654f8 100644 --- a/fs/gfs2/export.c +++ b/fs/gfs2/export.c @@ -99,6 +99,7 @@ static int gfs2_get_name(struct dentry *parent, char *name, struct gfs2_holder gh; u64 offset = 0; int error; + struct file_ra_state f_ra = { .start = 0 }; if (!dir) return -EINVAL; @@ -118,7 +119,7 @@ static int gfs2_get_name(struct dentry *parent, char *name, if (error) return error; - error = gfs2_dir_read(dir, &offset, &gnfd, get_name_filldir); + error = gfs2_dir_read(dir, &offset, &gnfd, get_name_filldir, &f_ra); gfs2_glock_dq_uninit(&gh); |