IMA: switch IMA over to new i_version API

Signed-off-by: Jeff Layton <jlayton@redhat.com>

security/integrity/ima/ima_api.c

@@ -18,6 +18,7 @@
 #include <linux/fs.h>
 #include <linux/xattr.h>
 #include <linux/evm.h>
+#include <linux/iversion.h>
 
 #include "ima.h"
 
@@ -215,7 +216,7 @@ int ima_collect_measurement(struct integrity_iint_cache *iint,
 	 * which do not support i_version, support is limited to an initial
 	 * measurement/appraisal/audit.
 	 */
-	i_version = file_inode(file)->i_version;
+	i_version = inode_query_iversion(inode);
 	hash.hdr.algo = algo;
 
 	/* Initialize hash digest to 0's in case of failure */

security/integrity/ima/ima_main.c

@@ -24,6 +24,7 @@
 #include <linux/slab.h>
 #include <linux/xattr.h>
 #include <linux/ima.h>
+#include <linux/iversion.h>
 
 #include "ima.h"
 
@@ -128,7 +129,7 @@ static void ima_check_last_writer(struct integrity_iint_cache *iint,
 	inode_lock(inode);
 	if (atomic_read(&inode->i_writecount) == 1) {
 		if (!IS_I_VERSION(inode) ||
-		    (iint->version != inode->i_version) ||
+		    inode_cmp_iversion(inode, iint->version) ||
 		    (iint->flags & IMA_NEW_FILE)) {
 			iint->flags &= ~(IMA_DONE_MASK | IMA_NEW_FILE);
 			iint->measured_pcrs = 0;