[PATCH 2/4] taskstats: take the inode once in exe_add_tsk()

[Bradley Morgan <brads@mainlining.org>]

exe_add_tsk() walks exe_file->f_inode twice, once for the superblock
device and once for the inode number.  file_inode() is the accessor for
that field, and hoisting the inode out of the two assignments also gets
stats->ac_exe_dev onto one line instead of a split continuation.

Signed-off-by: Bradley Morgan <brads@mainlining.org>
---
 kernel/taskstats.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 37422c43b8caa..35e9fa71526cc 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -159,10 +159,11 @@ static void exe_add_tsk(struct taskstats *stats, struct task_struct *tsk)
 	struct file *exe_file = get_task_exe_file(tsk);
 
 	if (exe_file) {
+		struct inode *inode = file_inode(exe_file);
+
 		/* Following cp_new_stat64() in stat.c . */
-		stats->ac_exe_dev =
-			huge_encode_dev(exe_file->f_inode->i_sb->s_dev);
-		stats->ac_exe_inode = exe_file->f_inode->i_ino;
+		stats->ac_exe_dev = huge_encode_dev(inode->i_sb->s_dev);
+		stats->ac_exe_inode = inode->i_ino;
 		fput(exe_file);
 	} else {
 		stats->ac_exe_dev = 0;
-- 
2.53.0