[PATCH v2 8/8] ext4: pack holes in ext4_inode_info

[libaokun]

From: Baokun Li <libaokun1@xxxxxxxxxx>

When CONFIG_DEBUG_SPINLOCK is not enabled (general case), there are four
4 bytes holes and one 2 bytes hole in struct ext4_inode_info. Move the
members to pack the four 4 bytes holes.

Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Zhang Yi <yi.zhang@xxxxxxxxxx>
---
 fs/ext4/ext4.h | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 6fd550fc0c5c..c1693ba836ee 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1062,6 +1062,8 @@ struct ext4_inode_info {
 	/* Number of ongoing updates on this inode */
 	atomic_t  i_fc_updates;
 
+	spinlock_t i_raw_lock;	/* protects updates to the raw inode */
+
 	/* Fast commit wait queue for this inode */
 	wait_queue_head_t i_fc_wait;
 
@@ -1099,8 +1101,6 @@ struct ext4_inode_info {
 	struct inode vfs_inode;
 	struct jbd2_inode *jinode;
 
-	spinlock_t i_raw_lock;	/* protects updates to the raw inode */
-
 	/*
 	 * File creation time. Its function is same as that of
 	 * struct timespec64 i_{a,c,m}time in the generic inode.
@@ -1143,6 +1143,7 @@ struct ext4_inode_info {
 	/* quota space reservation, managed internally by quota code */
 	qsize_t i_reserved_quota;
 #endif
+	spinlock_t i_block_reservation_lock;
 
 	/* Lock protecting lists below */
 	spinlock_t i_completed_io_lock;
@@ -1153,8 +1154,6 @@ struct ext4_inode_info {
 	struct list_head i_rsv_conversion_list;
 	struct work_struct i_rsv_conversion_work;
 
-	spinlock_t i_block_reservation_lock;
-
 	/*
 	 * Transactions that contain inode's metadata needed to complete
 	 * fsync and fdatasync, respectively.
-- 
2.39.2