GFS2: Increase buffer size for glocks and glstats debugfs files (df5d2f55) · Commits · 戴 / test

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>

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;
		}

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