From: Mike Snitzer <snitzer@kernel.org>
To: dm-devel@redhat.com
Cc: linux-block@vger.kernel.org, axboe@kernel.dk, ejt@redhat.com,
mpatocka@redhat.com, heinzm@redhat.com, nhuck@google.com,
ebiggers@kernel.org, keescook@chromium.org, luomeng12@huawei.com,
Mike Snitzer <snitzer@kernel.org>
Subject: [dm-6.4 PATCH v3 09/20] dm bufio: move dm_bufio_client members to avoid spanning cachelines
Date: Mon, 27 Mar 2023 16:11:32 -0400 [thread overview]
Message-ID: <20230327201143.51026-10-snitzer@kernel.org> (raw)
In-Reply-To: <20230327201143.51026-1-snitzer@kernel.org>
Movement also consolidates holes in dm_bufio_client struct. But the
overall size of the struct isn't changed.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
---
drivers/md/dm-bufio.c | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 9ac50024006d..e5459741335d 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -936,13 +936,16 @@ static void cache_remove_range(struct dm_buffer_cache *bc,
* context.
*/
struct dm_bufio_client {
- struct mutex lock;
- spinlock_t spinlock;
- bool no_sleep;
-
struct block_device *bdev;
unsigned int block_size;
s8 sectors_per_block_bits;
+
+ bool no_sleep;
+ struct mutex lock;
+ spinlock_t spinlock;
+
+ int async_write_error;
+
void (*alloc_callback)(struct dm_buffer *buf);
void (*write_callback)(struct dm_buffer *buf);
struct kmem_cache *slab_buffer;
@@ -954,23 +957,22 @@ struct dm_bufio_client {
unsigned int minimum_buffers;
- struct dm_buffer_cache cache;
- wait_queue_head_t free_buffer_wait;
-
sector_t start;
- int async_write_error;
-
- struct list_head client_list;
-
struct shrinker shrinker;
struct work_struct shrink_work;
atomic_long_t need_shrink;
+ wait_queue_head_t free_buffer_wait;
+
+ struct list_head client_list;
+
/*
* Used by global_cleanup to sort the clients list.
*/
unsigned long oldest_buffer;
+
+ struct dm_buffer_cache cache;
};
static DEFINE_STATIC_KEY_FALSE(no_sleep_enabled);
--
2.40.0
next prev parent reply other threads:[~2023-03-27 20:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-27 20:11 [dm-6.4 PATCH v3 00/20] dm bufio, thin: improve concurrent IO performance Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 01/20] dm bufio: remove unused dm_bufio_release_move interface Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 02/20] dm bufio: use WARN_ON in dm_bufio_client_destroy and dm_bufio_exit Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 03/20] dm bufio: never crash if dm_bufio_in_request() Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 04/20] dm bufio: don't bug for clear developer oversight Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 05/20] dm bufio: add LRU abstraction Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 06/20] dm bufio: add dm_buffer_cache abstraction Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 07/20] dm bufio: improve concurrent IO performance Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 08/20] dm bufio: add lock_history optimization for cache iterators Mike Snitzer
2023-03-27 20:11 ` Mike Snitzer [this message]
2023-03-27 20:11 ` [dm-6.4 PATCH v3 10/20] dm bufio: use waitqueue_active in __free_buffer_wake Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 11/20] dm bufio: use multi-page bio vector Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 12/20] dm thin: speed up cell_defer_no_holder() Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 13/20] dm: split discards further if target sets max_discard_granularity Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 14/20] dm bio prison v1: improve concurrent IO performance Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 15/20] dm bio prison v1: add dm_cell_key_has_valid_range Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 16/20] dm: add dm_num_sharded_locks() Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 17/20] dm bufio: prepare to intelligently size dm_buffer_cache's buffer_trees Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 18/20] dm bufio: " Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 19/20] dm bio prison v1: prepare to intelligently size dm_bio_prison's prison_regions Mike Snitzer
2023-03-27 20:11 ` [dm-6.4 PATCH v3 20/20] dm bio prison v1: " Mike Snitzer
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