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authorBob Peterson <rpeterso@redhat.com>2011-10-27 12:16:06 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2011-11-08 09:52:12 +0000
commitdfe4d34b39b80faff52489f950a18523da7581bf (patch)
treebe478e2c4988612eef88a1669f774dd8f9f9b8af /fs/gfs2/dir.h
parent20ed0535d35b74c9e4fa5777766d6e836fe3c90c (diff)
downloadop-kernel-dev-dfe4d34b39b80faff52489f950a18523da7581bf.zip
op-kernel-dev-dfe4d34b39b80faff52489f950a18523da7581bf.tar.gz
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/dir.h')
-rw-r--r--fs/gfs2/dir.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/gfs2/dir.h b/fs/gfs2/dir.h
index ff5772f..98c960b 100644
--- a/fs/gfs2/dir.h
+++ b/fs/gfs2/dir.h
@@ -25,7 +25,7 @@ extern int gfs2_dir_add(struct inode *inode, const struct qstr *filename,
const struct gfs2_inode *ip);
extern int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry);
extern int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
- filldir_t filldir);
+ filldir_t filldir, struct file_ra_state *f_ra);
extern int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
const struct gfs2_inode *nip, unsigned int new_type);
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