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>

2 files changed, 7 insertions, 2 deletions

diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 3754e3cbf02b..25eeb2bcee47 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 a4e23d68a398..5b2cb8132f66 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);