[PATCH] fs: pack fields `i_state` and `i_fsnotify_mask`

[Max Kellermann]

Both were 32 bit fields followed by a 32 bit hole.  This reduces size
of `struct inode` by 8 bytes.

Signed-off-by: Max Kellermann <max.kellermann@xxxxxxxxx>
---
 include/linux/fs.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5b3a100aba77..9ab028dabc1b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -813,7 +813,11 @@ struct inode {
 
 	/* Misc */
 	struct inode_state_flags i_state;
-	/* 32-bit hole */
+
+#ifdef CONFIG_FSNOTIFY
+	__u32			i_fsnotify_mask; /* all events this inode cares about */
+#endif
+
 	struct rw_semaphore	i_rwsem;
 
 	/* Timestamp for writeback list ordering and age checks (jiffies). */
@@ -865,8 +869,6 @@ struct inode {
 
 
 #ifdef CONFIG_FSNOTIFY
-	__u32			i_fsnotify_mask; /* all events this inode cares about */
-	/* 32-bit hole reserved for expanding i_fsnotify_mask */
 	struct fsnotify_mark_connector __rcu	*i_fsnotify_marks;
 #endif
 
-- 
2.53.0