From 300432f58b99449076f8a662504bb74cb452efcf Mon Sep 17 00:00:00 2001
From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 17 Feb 2022 23:40:28 -0500
Subject: [PATCH] dm: reduce dm_io and dm_target_io struct sizes
Git-commit: 300432f58b99449076f8a662504bb74cb452efcf
Patch-mainline: v5.18-rc1
References: jsc#PED-2765
Remove one 4 byte hole in dm_io struct.
Remove two 4 byte holes in dm_target_io struct.
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/dm-core.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/md/dm-core.h b/drivers/md/dm-core.h
index e2128d176831..a86b5dacef0e 100644
--- a/drivers/md/dm-core.h
+++ b/drivers/md/dm-core.h
@@ -211,9 +211,9 @@ struct dm_table {
#define DM_TIO_MAGIC 7282014
struct dm_target_io {
unsigned int magic;
+ unsigned int target_bio_nr;
struct dm_io *io;
struct dm_target *ti;
- unsigned int target_bio_nr;
unsigned int *len_ptr;
bool inside_dm_io;
sector_t old_sector;
@@ -227,10 +227,10 @@ struct dm_target_io {
#define DM_IO_MAGIC 5191977
struct dm_io {
unsigned int magic;
- struct mapped_device *md;
- blk_status_t status;
atomic_t io_count;
+ struct mapped_device *md;
struct bio *orig_bio;
+ blk_status_t status;
unsigned long start_time;
spinlock_t endio_lock;
struct dm_stats_aux stats_aux;
--
2.35.3