GFS2: Don't try to deallocate unlinked inodes when mounted ro
Steven Whitehouse [Wed, 30 Mar 2011 13:17:51 +0000 (14:17 +0100)]
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>

fs/gfs2/glops.c
fs/gfs2/super.c

index 3754e3c..25eeb2b 100644 (file)
@@ -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) {
index a4e23d6..5b2cb81 100644 (file)
@@ -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);