Linux Archive

Linux Archive (http://www.linux-archive.org/)
-   Cluster Development (http://www.linux-archive.org/cluster-development/)
-   -   GFS2: Increase buffer size for glocks and glstats debugfs files (http://www.linux-archive.org/cluster-development/686449-gfs2-increase-buffer-size-glocks-glstats-debugfs-files.html)

Steven Whitehouse 07-23-2012 08:00 AM

GFS2: Increase buffer size for glocks and glstats debugfs files
 
As per Al Viro's suggestion, this increases the buffer size used
for these two files. This provides a speed up of slightly less than
8x (i.e. proportional to the buffer size) for cases when we have
large numbers of glocks.

Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index dab2526..1c4cddf 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1972,6 +1972,9 @@ static int gfs2_glocks_open(struct inode *inode, struct file *file)
struct seq_file *seq = file->private_data;
struct gfs2_glock_iter *gi = seq->private;
gi->sdp = inode->i_private;
+ seq->buf = kmalloc(8*PAGE_SIZE, GFP_KERNEL | __GFP_NOWARN);
+ if (seq->buf)
+ seq->size = 8*PAGE_SIZE;
}
return ret;
}
@@ -1984,6 +1987,9 @@ static int gfs2_glstats_open(struct inode *inode, struct file *file)
struct seq_file *seq = file->private_data;
struct gfs2_glock_iter *gi = seq->private;
gi->sdp = inode->i_private;
+ seq->buf = kmalloc(8*PAGE_SIZE, GFP_KERNEL | __GFP_NOWARN);
+ if (seq->buf)
+ seq->size = 8*PAGE_SIZE;
}
return ret;
}
--
1.7.4


All times are GMT. The time now is 04:14 AM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.