Remove redundant flush/fence

Author: Andiry

fs/nova/gc.c

@@ -399,7 +399,6 @@ static unsigned long nova_inode_log_thorough_gc(struct super_block *sb,
 		memcpy_to_pmem_nocache(alter_pi, pi, sizeof(struct nova_inode));
 	}
 	nova_memlock_inode(sb, pi, &irq_flags);
-	nova_flush_buffer(pi, sizeof(struct nova_inode), 1);
 	sih->log_head = new_head;
 
 	/* Step 3: Unlink the old log */
@@ -530,7 +529,6 @@ static unsigned long nova_inode_alter_log_thorough_gc(struct super_block *sb,
 		memcpy_to_pmem_nocache(alter_pi, pi, sizeof(struct nova_inode));
 	}
 	nova_memlock_inode(sb, pi, &irq_flags);
-	nova_flush_buffer(pi, sizeof(struct nova_inode), 1);
 	sih->alter_log_head = new_head;
 
 	/* Step 4: Unlink the old log */

fs/nova/namei.c

@@ -101,7 +101,6 @@ static void nova_lite_transaction_for_new_inode(struct super_block *sb,
 
 	pi->valid = 1;
 	nova_update_inode_checksum(pi);
-	PERSISTENT_BARRIER();
 
 	nova_commit_lite_transaction(sb, journal_tail, cpu);
 	nova_memlock_journal(sb, &irq_flags);