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| author | Steven Whitehouse <swhiteho@redhat.com> | 2012-06-07 13:30:16 +0100 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2012-06-07 13:30:16 +0100 |
| commit | df5d2f5560a9c33129391a136ed9f0ac26abe69b (patch) | |
| tree | 856a81be21fad102bc3fe6cbaeb5af5eeb8b21c6 | |
| parent | 1b8ba31a88c5115687095ca2a01bfcaecb489b5a (diff) | |
| download | op-kernel-dev-df5d2f5560a9c33129391a136ed9f0ac26abe69b.zip op-kernel-dev-df5d2f5560a9c33129391a136ed9f0ac26abe69b.tar.gz | |
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>
| -rw-r--r-- | fs/gfs2/glock.c | 6 |
1 files changed, 6 insertions, 0 deletions
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; } |
