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Message-Id: <1343030466-3053-6-git-send-email-swhiteho@redhat.com> Date: Mon, 23 Jul 2012 09:00:55 +0100 From: Steven Whitehouse <swhiteho@...hat.com> To: linux-kernel@...r.kernel.org, cluster-devel@...hat.com Cc: Steven Whitehouse <swhiteho@...hat.com>, Al Viro <viro@...IV.linux.org.uk> Subject: [PATCH 05/16] 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@...IV.linux.org.uk> Signed-off-by: Steven Whitehouse <swhiteho@...hat.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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