cifs: convert booleans in cifsInodeInfo to a flags field

In later patches, we'll need to have a bitlock, so go ahead and convert
these bools to use atomic bitops instead.

Also, clean up the initialization of the flags field. There's no need
to unset each bit individually just after it was zeroed on allocation.

Signed-off-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index a22d667..fa9ef8d 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -117,7 +117,7 @@
 
 	cifs_dbg(FYI, "%s: invalidating inode %llu mapping\n",
 		 __func__, cifs_i->uniqueid);
-	cifs_i->invalid_mapping = true;
+	set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags);
 }
 
 /*
@@ -177,7 +177,10 @@
 	else
 		cifs_i->time = jiffies;
 
-	cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING;
+	if (fattr->cf_flags & CIFS_FATTR_DELETE_PENDING)
+		set_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
+	else
+		clear_bit(CIFS_INO_DELETE_PENDING, &cifs_i->flags);
 
 	cifs_i->server_eof = fattr->cf_eof;
 	/*
@@ -1121,7 +1124,7 @@
 	}
 
 	/* try to set DELETE_ON_CLOSE */
-	if (!cifsInode->delete_pending) {
+	if (!test_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags)) {
 		rc = CIFSSMBSetFileDisposition(xid, tcon, true, fid.netfid,
 					       current->tgid);
 		/*
@@ -1138,7 +1141,7 @@
 			rc = -EBUSY;
 			goto undo_rename;
 		}
-		cifsInode->delete_pending = true;
+		set_bit(CIFS_INO_DELETE_PENDING, &cifsInode->flags);
 	}
 
 out_close:
@@ -1761,14 +1764,14 @@
 	int rc = 0;
 	struct cifsInodeInfo *cifs_i = CIFS_I(inode);
 
-	cifs_i->invalid_mapping = false;
+	clear_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags);
 
 	if (inode->i_mapping && inode->i_mapping->nrpages != 0) {
 		rc = invalidate_inode_pages2(inode->i_mapping);
 		if (rc) {
 			cifs_dbg(VFS, "%s: could not invalidate inode %p\n",
 				 __func__, inode);
-			cifs_i->invalid_mapping = true;
+			set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags);
 		}
 	}
 
@@ -1842,7 +1845,7 @@
 	if (rc)
 		return rc;
 
-	if (CIFS_I(inode)->invalid_mapping)
+	if (test_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags))
 		rc = cifs_invalidate_mapping(inode);
 	return rc;
 }
@@ -1857,7 +1860,7 @@
 	if (rc)
 		return rc;
 
-	if (CIFS_I(inode)->invalid_mapping)
+	if (test_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags))
 		rc = cifs_invalidate_mapping(inode);
 	return rc;
 }