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Received: from viro by zeniv.linux.org.uk with local (Exim 4.99 #2 (Red Hat Linux)) id 1veQB8-000000085ZK-2mo4; Sat, 10 Jan 2026 04:02:18 +0000 From: Al Viro To: linux-mm@kvack.org Cc: Vlastimil Babka , Harry Yoo , linux-fsdevel@vger.kernel.org, Linus Torvalds , Christian Brauner , Jan Kara , Mateusz Guzik , linux-kernel@vger.kernel.org Subject: [RFC PATCH 03/15] make mnt_cache static-duration Date: Sat, 10 Jan 2026 04:02:05 +0000 Message-ID: <20260110040217.1927971-4-viro@zeniv.linux.org.uk> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260110040217.1927971-1-viro@zeniv.linux.org.uk> References: <20260110040217.1927971-1-viro@zeniv.linux.org.uk> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 7324140008 X-Stat-Signature: 1s53u71kn5p3pa9ogwf955gyqqf341oi X-HE-Tag: 1768017660-651232 X-HE-Meta: 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 x0gd+eUo JPt8AkGSR/ctFDQuPSNeCBQh0oJ0CiON3sQLI18aGdFGJmudJj87uOUOq6VXsOeplMhSB47LImkFKE4pIDjOz5JAseN3yxZyKMZZV/xkP4nOqESf7rMArKqZI7rQziEZH0FxqgCMyn1DSpX0MH2w3YjjtRcaSqwgQab+clK0TM5Uvs1kUBAtoRyuDK3cC9CMERXPwuaR4f26oByYjVcA0j1VHasVqAqCVFkfx4Mk0wyJ/PkB4ejM0K986ZQ5JehByoI2yAC9aWCXeTLLwEbTtBezUerMu97HZf/wbKwhDJtpk2xXQZE0UsTooQovrG/RljWh9NAsYZmLOM8qLuXrHSqxy31G7F6C6yzeSkfoeYgPA6VR8C63L3ztaAvVOCdYG/kT4SG9lSVw77lObeQdIKdwCGLVe3cN8xJ10gclDfZOygs0aONXE/50CkuIDqI55e4UtUzkS6F2cuN7QRI7YjUErfSn5VePFsDiceinCo128wdHT/wn+vUdBU/b4JkjTyG5PxjUikOO8E0aqq3dnkbOGzqNUBE8LCGlk X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Signed-off-by: Al Viro --- fs/namespace.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/namespace.c b/fs/namespace.c index c58674a20cad..9a9882df463d 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -34,6 +34,7 @@ #include #include #include +#include #include "pnode.h" #include "internal.h" @@ -85,7 +86,8 @@ static u64 mnt_id_ctr = MNT_UNIQUE_ID_OFFSET; static struct hlist_head *mount_hashtable __ro_after_init; static struct hlist_head *mountpoint_hashtable __ro_after_init; -static struct kmem_cache *mnt_cache __ro_after_init; +static struct kmem_cache_opaque __mnt_cache; +#define mnt_cache to_kmem_cache(&__mnt_cache) static DECLARE_RWSEM(namespace_sem); static HLIST_HEAD(unmounted); /* protected by namespace_sem */ static LIST_HEAD(ex_mountpoints); /* protected by namespace_sem */ @@ -5997,7 +5999,7 @@ void __init mnt_init(void) { int err; - mnt_cache = kmem_cache_create("mnt_cache", sizeof(struct mount), + kmem_cache_setup(mnt_cache, "mnt_cache", sizeof(struct mount), 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT, NULL); mount_hashtable = alloc_large_system_hash("Mount-cache", -- 2.47.3