From: Steven Whitehouse <swhiteho@redhat.com>
Date: Wed, 30 Mar 2011 13:17:51 +0000 (+0100)
Subject: GFS2: Don't try to deallocate unlinked inodes when mounted ro
X-Git-Tag: upstream/snapshot3+hdmi~10608^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=001e8e8df4283dd4ef7a0297c012fce364c05cf1;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

GFS2: Don't try to deallocate unlinked inodes when mounted ro

This adds a couple of missing tests to avoid read-only nodes
from attempting to deallocate unlinked inodes.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Reported-by: Michel Andre de la Porte <madelaporte@ubi.com>
---

diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 3754e3c..25eeb2b 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -385,6 +385,10 @@ static int trans_go_demote_ok(const struct gfs2_glock *gl)
 static void iopen_go_callback(struct gfs2_glock *gl)
 {
 	struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
+	struct gfs2_sbd *sdp = gl->gl_sbd;
+
+	if (sdp->sd_vfs->s_flags & MS_RDONLY)
+		return;
 
 	if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 	    gl->gl_state == LM_ST_SHARED && ip) {
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index a4e23d6..5b2cb81 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -1318,12 +1318,13 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
 
 static void gfs2_evict_inode(struct inode *inode)
 {
-	struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
+	struct super_block *sb = inode->i_sb;
+	struct gfs2_sbd *sdp = sb->s_fs_info;
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_holder gh;
 	int error;
 
-	if (inode->i_nlink)
+	if (inode->i_nlink || (sb->s_flags & MS_RDONLY))
 		goto out;
 
 	error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);