[Cluster-devel] [GFS2 PATCH] gfs2: Remove sb_start_write from gfs2_statfs_sync

[Bob Peterson <rpeterso@redhat.com>]

Hi,

Before this patch, function gfs2_statfs_sync called sb_start_write and
sb_end_write. This is completely unnecessary because, aside from grabbing
glocks, gfs2_statfs_sync does all its updates to statfs with a transaction:
gfs2_trans_begin and _end. And transactions always do sb_start_intwrite in
gfs2_trans_begin and sb_end_intwrite in gfs2_trans_end.

This patch simply removes the call to sb_start_write.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
---
 fs/gfs2/super.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index b3d951ab8068..2f56acc41c04 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -353,7 +353,6 @@ int gfs2_statfs_sync(struct super_block *sb, int type)
 	struct buffer_head *m_bh, *l_bh;
 	int error;
 
-	sb_start_write(sb);
 	error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE,
 				   &gh);
 	if (error)
@@ -392,7 +391,6 @@ int gfs2_statfs_sync(struct super_block *sb, int type)
 out_unlock:
 	gfs2_glock_dq_uninit(&gh);
 out:
-	sb_end_write(sb);
 	return error;
 }