From 913a71d250803130eac523e7a2b6439e31a0bc83 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 6 May 2010 11:03:29 +0100 Subject: GFS2: Add some useful messages The following patch adds a message to indicate when barriers have been disabled due to a block device which doesn't support them. You could already tell this via the mount options in /proc/mounts, but all the other filesystems also log a message at the same time. Also, the same mechanisms are used to indicate when the lock demote interface has been used (only ever used for debugging) which is a request from our support team. Signed-off-by: Steven Whitehouse --- fs/gfs2/sys.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/gfs2/sys.c') diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index 2ac845d9c46c..7afb62ec97cf 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -233,6 +233,8 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len glops = gfs2_glops_list[gltype]; if (glops == NULL) return -EINVAL; + if (test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) + fs_info(sdp, "demote interface used\n"); rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); if (rv) return rv; -- cgit v1.2.3