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Received: from viro by zeniv.linux.org.uk with local (Exim 4.99 #2 (Red Hat Linux)) id 1veQB8-000000085Zh-4B9a; Sat, 10 Jan 2026 04:02:19 +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 06/15] turn bh_cachep static-duration Date: Sat, 10 Jan 2026 04:02:08 +0000 Message-ID: <20260110040217.1927971-7-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-Stat-Signature: h7yzdurmier8o4gdtpp7z9wbb3ixz87k X-Rspamd-Queue-Id: 594D42000B X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1768017660-246161 X-HE-Meta: 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 /rMDaxdf RtqNijToOQrCe5aAKhfPNvjV3ohN9xb/VFySnCCH3aSgUiUNGAVZ3E/4y5plQOLs1m7SpmCDcAqSGEvczwOQ3Rmju/fBf7WVtnh6PaG4xPlP7s2cT9W9nsu7Q0d40NlxJadw1//8YhBzZCKkJG2+cCO/F0lJZCl7F+i6utNGMwsFLUgsh/5dpW84aYR06bMvsGmaJZanL3sQdT0ZR4q5575kUutRRi6G8GIUw62HWAOHtU3q8H0B5hyTry9sGk7BL5U9boqgSfrmV2bSL8HIYl8WKafrC08SOzzTrN6tpawpqsV0XED1qUeCDYZsa3h8ddmQTAGViEQANLO7xpjxT/ez2KwXeorezxLtW/qGmAhXbhRUDZEIdZB++2Uje01vK5yFYy2KBqZR5H7Gj7Hlo7Cu6qm2v60jBo1K+B9AOxup9LpBnsFL2R1GoYHSkOonkxiARQFnOOruQm8nzweqysA/aNg== 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/buffer.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index 838c0c571022..c8ec1b440880 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -50,6 +50,7 @@ #include #include #include +#include #include "internal.h" @@ -2990,7 +2991,8 @@ EXPORT_SYMBOL(try_to_free_buffers); /* * Buffer-head allocation */ -static struct kmem_cache *bh_cachep __ro_after_init; +static struct kmem_cache_opaque bh_cache; +#define bh_cachep to_kmem_cache(&bh_cache) /* * Once the number of bh's in the machine exceeds this level, we start @@ -3149,7 +3151,7 @@ void __init buffer_init(void) unsigned long nrpages; int ret; - bh_cachep = KMEM_CACHE(buffer_head, + KMEM_CACHE_SETUP(bh_cachep, buffer_head, SLAB_RECLAIM_ACCOUNT|SLAB_PANIC); /* * Limit the bh occupancy to 10% of ZONE_NORMAL -- 2.47.3