gfs2: minor evict fix

In evict_should_delete(), when gfs2_upgrade_iopen_glock() fails, we
detach the iopen glock from the inode without calling
glock_clear_object().  This leads to a warning in glock_set_object()
when the same inode is recreated and the glock is reused.
Fix that by only detaching the iopen glock in gfs2_evict_inode().

In addition, remove the dequeue code from evict_should_delete(); we
already perform a conditional dequeue in gfs2_evict_inode().

Signed-off-by: Andreas Gruenbacher <[email protected]>

Author: Andreas Gruenbacher

Diff for: fs/gfs2/super.c

@@ -1339,12 +1339,8 @@ static enum evict_behavior evict_should_delete(struct inode *inode,
 
 	/* Must not read inode block until block type has been verified */
 	ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, gh);
-	if (unlikely(ret)) {
-		glock_clear_object(ip->i_iopen_gh.gh_gl, ip);
-		ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
-		gfs2_glock_dq_uninit(&ip->i_iopen_gh);
+	if (unlikely(ret))
 		return EVICT_SHOULD_DEFER_DELETE;
-	}
 
 	if (gfs2_inode_already_deleted(ip->i_gl, ip->i_no_formal_ino))
 		return EVICT_SHOULD_SKIP_DELETE;
@@ -1364,15 +1360,8 @@ static enum evict_behavior evict_should_delete(struct inode *inode,
 
 should_delete:
 	if (gfs2_holder_initialized(&ip->i_iopen_gh) &&
-	    test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) {
-		enum evict_behavior behavior =
-			gfs2_upgrade_iopen_glock(inode);
-
-		if (behavior != EVICT_SHOULD_DELETE) {
-			gfs2_holder_uninit(&ip->i_iopen_gh);
-			return behavior;
-		}
-	}
+	    test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags))
+		return gfs2_upgrade_iopen_glock(inode);
 	return EVICT_SHOULD_DELETE;
 }