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From: Al Viro <viro@zeniv.linux.org.uk>
To: linux-mm@kvack.org
Cc: Vlastimil Babka <vbabka@suse.cz>,
	Harry Yoo <harry.yoo@oracle.com>,
	linux-fsdevel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
	Mateusz Guzik <mjguzik@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: [RFC PATCH v3 08/10] make seq_file_cache statically allocated
Date: Sat, 13 Jun 2026 06:09:49 +0100	[thread overview]
Message-ID: <20260613050951.855141-9-viro@zeniv.linux.org.uk> (raw)
In-Reply-To: <20260613050951.855141-1-viro@zeniv.linux.org.uk>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/seq_file.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/seq_file.c b/fs/seq_file.c
index 4745db2a34d1..7cb40ae83f9b 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -20,11 +20,13 @@
 #include <linux/printk.h>
 #include <linux/string_helpers.h>
 #include <linux/uio.h>
+#include <linux/slab-static.h>
 
 #include <linux/uaccess.h>
 #include <asm/page.h>
 
-static struct kmem_cache *seq_file_cache __ro_after_init;
+static struct kmem_cache_opaque __seq_file_cache;
+#define seq_file_cache to_kmem_cache(&__seq_file_cache)
 
 static void seq_set_overflow(struct seq_file *m)
 {
@@ -1140,5 +1142,5 @@ EXPORT_SYMBOL(seq_hlist_next_percpu);
 
 void __init seq_file_init(void)
 {
-	seq_file_cache = KMEM_CACHE(seq_file, SLAB_ACCOUNT|SLAB_PANIC);
+	KMEM_CACHE_SETUP(seq_file_cache, seq_file, SLAB_ACCOUNT|SLAB_PANIC);
 }
-- 
2.47.3



  parent reply	other threads:[~2026-06-13  5:10 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-10  4:02 [RFC PATCH 00/15] kmem_cache instances with static storage duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 01/15] static kmem_cache instances for core caches Al Viro
2026-01-10  5:40   ` Matthew Wilcox
2026-01-10  6:23     ` Al Viro
2026-01-14  7:30   ` Harry Yoo
2026-01-14  7:38     ` Al Viro
2026-01-15 16:59     ` Vlastimil Babka
2026-06-11 17:13       ` Al Viro
2026-06-11 17:14         ` [PATCH v2 0/9] kmem_cache instances with static storage duration Al Viro
2026-06-11 17:14           ` [PATCH v2 1/9] static kmem_cache instances for core caches Al Viro
2026-06-11 17:14           ` [PATCH v2 2/9] allow static-duration kmem_cache in modules Al Viro
2026-06-11 17:14           ` [PATCH v2 3/9] VFS caches: switch from runtime_const() machinery to slab-static.h Al Viro
2026-06-11 17:14           ` [PATCH v2 4/9] make inode_cache statically allocated Al Viro
2026-06-11 17:14           ` [PATCH v2 5/9] make mnt_cache " Al Viro
2026-06-11 17:14           ` [PATCH v2 6/9] make bh_cachep " Al Viro
2026-06-11 17:14           ` [PATCH v2 7/9] make seq_file_cache " Al Viro
2026-06-11 17:14           ` [PATCH v2 8/9] make thread component caches (fs_cachep, files_cachep, etc.) " Al Viro
2026-06-11 17:14           ` [PATCH v2 9/9] make ufs_inode_cache " Al Viro
2026-06-13  5:09           ` [RFC PATCH v3 00/10] kmem_cache instances with static storage duration Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 01/10] static kmem_cache instances for core caches: infrastructure Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 02/10] static kmem_cache instances for core caches: setup primitives Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 03/10] allow preallocated kmem_cache instances in modules Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 04/10] VFS caches: switch from runtime_const() machinery to slab-static.h Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 05/10] make inode_cache statically allocated Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 06/10] make mnt_cache " Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 07/10] make bh_cachep " Al Viro
2026-06-13  5:09             ` Al Viro [this message]
2026-06-13  5:09             ` [RFC PATCH v3 09/10] make thread component caches (fs_cachep, files_cachep, etc.) " Al Viro
2026-06-13  5:09             ` [RFC PATCH v3 10/10] make ufs_inode_cache " Al Viro
2026-06-23  8:09             ` [RFC PATCH v3 00/10] kmem_cache instances with static storage duration Vlastimil Babka (SUSE)
2026-06-24  0:48               ` Al Viro
2026-01-10  4:02 ` [RFC PATCH 02/15] allow static-duration kmem_cache in modules Al Viro
2026-01-10  4:02 ` [RFC PATCH 03/15] make mnt_cache static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 04/15] turn thread_cache static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 05/15] turn signal_cache static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 06/15] turn bh_cachep static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 07/15] turn dentry_cache static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 08/15] turn files_cachep static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 09/15] make filp and bfilp caches static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 10/15] turn sighand_cache static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 11/15] turn mm_cachep static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 12/15] turn task_struct_cachep static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 13/15] turn fs_cachep static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 14/15] turn inode_cachep static-duration Al Viro
2026-01-10  4:02 ` [RFC PATCH 15/15] turn ufs_inode_cache static-duration Al Viro
2026-01-10  5:33 ` [RFC PATCH 00/15] kmem_cache instances with static storage duration Linus Torvalds
2026-01-10  6:16   ` Al Viro
2026-01-14  7:12     ` Harry Yoo
2026-01-15  0:46 ` Christoph Lameter (Ampere)
2026-01-15  2:08   ` Al Viro
2026-01-15 19:10     ` Christoph Lameter (Ampere)
2026-01-15 19:44       ` Al Viro

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