[Cluster-devel] [PATCH 6/8] GFS2: Inline function meta_lo_add

[Bob Peterson]

This patch simply combines function meta_lo_add with its only
caller, trans_add_meta. This makes the code easier to read and
will make it easier to reduce contention on gfs2_log_lock.

Signed-off-by: Bob Peterson <rpeterso at redhat.com>
---
 fs/gfs2/trans.c | 49 ++++++++++++++++++++++---------------------------
 1 file changed, 22 insertions(+), 27 deletions(-)

diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index 5d7f5b0..483c5a7 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -195,16 +195,35 @@ void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh)
 	unlock_buffer(bh);
 }
 
-static void meta_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
+void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh)
 {
+
+	struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
+	struct gfs2_bufdata *bd;
 	struct gfs2_meta_header *mh;
 	struct gfs2_trans *tr;
 	enum gfs2_freeze_state state = atomic_read(&sdp->sd_freeze_state);
 
+	lock_buffer(bh);
+	gfs2_log_lock(sdp);
+	bd = bh->b_private;
+	if (bd == NULL) {
+		gfs2_log_unlock(sdp);
+		unlock_buffer(bh);
+		lock_page(bh->b_page);
+		if (bh->b_private == NULL)
+			bd = gfs2_alloc_bufdata(gl, bh, &gfs2_buf_lops);
+		else
+			bd = bh->b_private;
+		unlock_page(bh->b_page);
+		lock_buffer(bh);
+		gfs2_log_lock(sdp);
+	}
+	gfs2_assert(sdp, bd->bd_gl == gl);
 	tr = current->journal_info;
 	set_bit(TR_TOUCHED, &tr->tr_flags);
 	if (!list_empty(&bd->bd_list))
-		return;
+		goto out_unlock;
 	set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
 	set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
 	mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
@@ -222,31 +241,7 @@ static void meta_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
 	mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
 	list_add(&bd->bd_list, &tr->tr_buf);
 	tr->tr_num_buf_new++;
-}
-
-void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh)
-{
-
-	struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
-	struct gfs2_bufdata *bd;
-
-	lock_buffer(bh);
-	gfs2_log_lock(sdp);
-	bd = bh->b_private;
-	if (bd == NULL) {
-		gfs2_log_unlock(sdp);
-		unlock_buffer(bh);
-		lock_page(bh->b_page);
-		if (bh->b_private == NULL)
-			bd = gfs2_alloc_bufdata(gl, bh, &gfs2_buf_lops);
-		else
-			bd = bh->b_private;
-		unlock_page(bh->b_page);
-		lock_buffer(bh);
-		gfs2_log_lock(sdp);
-	}
-	gfs2_assert(sdp, bd->bd_gl == gl);
-	meta_lo_add(sdp, bd);
+out_unlock:
 	gfs2_log_unlock(sdp);
 	unlock_buffer(bh);
 }
-- 
2.9.3