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Commit df5d2f55 authored by Steven Whitehouse's avatar Steven Whitehouse
Browse files

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: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent 1b8ba31a

fs/gfs2/glock.c

+6 −0
Original line number Diff line number Diff line
@@ -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;

}