ext4: add trace for the read and release of regular file

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4H3JT
CVE: NA
backport: openEuler-22.03-LTS

---------------------------

Use fs_file_read_do_trace() and trace_fs_file_release() to do that.
Signed-off-by: NHou Tao <houtao1@huawei.com>
Acked-by: Nfang wei <fangwei1@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NZhihao Cheng <chengzhihao1@huawei.com>
Reviewed-by: NZhang Yi <yi.zhang@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

fs/ext4/file.c

@@ -30,6 +30,7 @@
 #include <linux/uio.h>
 #include <linux/mman.h>
 #include <linux/backing-dev.h>
+#include <trace/events/fs.h>
 #include "ext4.h"
 #include "ext4_jbd2.h"
 #include "xattr.h"
@@ -128,6 +129,7 @@ static ssize_t ext4_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
 	if (iocb->ki_flags & IOCB_DIRECT)
 		return ext4_dio_read_iter(iocb, to);
 
+	fs_file_read_do_trace(iocb);
 	return generic_file_read_iter(iocb, to);
 }
 
@@ -138,6 +140,8 @@ static ssize_t ext4_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
  */
 static int ext4_release_file(struct inode *inode, struct file *filp)
 {
+	trace_fs_file_release(inode, filp);
+
 	if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) {
 		ext4_alloc_da_blocks(inode);
 		ext4_clear_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);