UBIFS: get rid of dbg_dump_stack

In case of errors we almost always need the stack dump - it makes no sense
to compile it out. Remove the 'dbg_dump_stack()' function completely.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index 9228950a..16d4065 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -109,7 +109,7 @@
 	if (err && (err != -EBADMSG || even_ebadmsg)) {
 		ubifs_err("reading %d bytes from LEB %d:%d failed, error %d",
 			  len, lnum, offs, err);
-		dbg_dump_stack();
+		dump_stack();
 	}
 	return err;
 }
@@ -130,7 +130,7 @@
 		ubifs_err("writing %d bytes to LEB %d:%d failed, error %d",
 			  len, lnum, offs, err);
 		ubifs_ro_mode(c, err);
-		dbg_dump_stack();
+		dump_stack();
 	}
 	return err;
 }
@@ -151,7 +151,7 @@
 		ubifs_err("changing %d bytes in LEB %d failed, error %d",
 			  len, lnum, err);
 		ubifs_ro_mode(c, err);
-		dbg_dump_stack();
+		dump_stack();
 	}
 	return err;
 }
@@ -170,7 +170,7 @@
 	if (err) {
 		ubifs_err("unmap LEB %d failed, error %d", lnum, err);
 		ubifs_ro_mode(c, err);
-		dbg_dump_stack();
+		dump_stack();
 	}
 	return err;
 }
@@ -189,7 +189,7 @@
 	if (err) {
 		ubifs_err("mapping LEB %d failed, error %d", lnum, err);
 		ubifs_ro_mode(c, err);
-		dbg_dump_stack();
+		dump_stack();
 	}
 	return err;
 }
@@ -202,7 +202,7 @@
 	if (err < 0) {
 		ubifs_err("ubi_is_mapped failed for LEB %d, error %d",
 			  lnum, err);
-		dbg_dump_stack();
+		dump_stack();
 	}
 	return err;
 }
@@ -295,7 +295,7 @@
 	if (!quiet) {
 		ubifs_err("bad node at LEB %d:%d", lnum, offs);
 		dbg_dump_node(c, buf);
-		dbg_dump_stack();
+		dump_stack();
 	}
 	return err;
 }
@@ -842,7 +842,7 @@
 	ubifs_err("cannot write %d bytes to LEB %d:%d, error %d",
 		  len, wbuf->lnum, wbuf->offs, err);
 	dbg_dump_node(c, buf);
-	dbg_dump_stack();
+	dump_stack();
 	dbg_dump_leb(c, wbuf->lnum);
 	return err;
 }
@@ -961,7 +961,7 @@
 out:
 	ubifs_err("bad node at LEB %d:%d", lnum, offs);
 	dbg_dump_node(c, buf);
-	dbg_dump_stack();
+	dump_stack();
 	return -EINVAL;
 }
 
@@ -1018,7 +1018,7 @@
 	ubifs_err("bad node at LEB %d:%d, LEB mapping status %d", lnum, offs,
 		  ubi_is_mapped(c->ubi, lnum));
 	dbg_dump_node(c, buf);
-	dbg_dump_stack();
+	dump_stack();
 	return -EINVAL;
 }