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b=jnfJtzwzy2+6HusmPCYxjmVTUBa3VmnP/4od7x6hqMpnI6SxwPX9auaDwxAh3r1JC 9UufHYlFNa1Zj4AuSdWjB/5h1F5PHWvUvcgN/zVkDzqhJ/Z6edPs/aisUiKIYcYf3Y umHi0Uu59w7lQdAkPpDLhYEPOzRPQg74Qi0V4rAmrJtuYSZdnL7Vp5etvtn3XDoKzc Dwey7+NkW1ci4nxmtZVk8gGZn6VUxa78OQ2WK9uV/Fv8UFeG6GHyvV7Mj+VgZaNB5u 77XBNaiQ7Ctbh2sDbu1fVpvlfxe4ng2gOnGWqXR3/nnBqp5DoBdWP6XwDjYbkQH8nM fqVKcwqBBzrAQ== Message-ID: <50432ae2-1d2e-4f76-aea4-28b16874f472@kernel.org> Date: Mon, 3 Aug 2026 10:01:42 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/slab: stop exporting kvfree_rcu_barrier[_on_cache]() Content-Language: en-US To: Harry Yoo , Andrew Morton Cc: Hao Li , Uladzislau Rezki , Christoph Lameter , David Rientjes , Roman Gushchin , linux-mm@kvack.org, rcu@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260730-unexport-barriers-v1-1-852f6641abe9@kernel.org> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260730-unexport-barriers-v1-1-852f6641abe9@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 3267AC0005 X-Rspam-User: X-Stat-Signature: q7bdkd37dt9is5qr54si33jtrchyuawc X-Rspamd-Server: rspam04 X-HE-Tag: 1785744106-542594 X-HE-Meta: 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 D+AYkkXZ t9KFxtbZWelWCNgy6GyQuC1rUaCaJmxxitHzHerDHwktLQpr5wPOd1plk91j8Io3gNGAu0KvsYxx63STgjYt0E7eA1UdZK2LwMQOYAM1QUoVi7tfdNLu7z1R9T9OTA9eYxtR9G8gYn15kBxb7CpGBi9f+1xPYI4D+lmdyOL1ZZPhxw7hLG87CLX3m72qeJGY/4hVVAxgdHnWDt1RPdUU4WQLimwQcC7MaoUbFBivCC168Oiy+k3rGCfqGC4A6iYE2Ua6dsuj6SyvsviIBkRgnkSZxrorqZyw9FV7TmvgGDhHdNZQopi3gYwII7J2VXYkp21fexiBi7WPLWyA= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/30/26 16:32, Vlastimil Babka (SUSE) wrote: > No module code calls these functions directly. Seems it was always the > case. Remove the exports. > > Signed-off-by: Vlastimil Babka (SUSE) > --- > Based on slab/for-7.3/kfree_rcu_nolock Applied to that branch and slab/for-next > --- > mm/slab_common.c | 4 ---- > 1 file changed, 4 deletions(-) > > diff --git a/mm/slab_common.c b/mm/slab_common.c > index 6750dfa27367..cd155ffc2762 100644 > --- a/mm/slab_common.c > +++ b/mm/slab_common.c > @@ -1329,14 +1329,12 @@ void kvfree_rcu_barrier(void) > deferred_work_barrier(); > rcu_barrier(); > } > -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier); > > void kvfree_rcu_barrier_on_cache(struct kmem_cache *s) > { > deferred_work_barrier(); > rcu_barrier(); > } > -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier_on_cache); > > void __init kvfree_rcu_init(void) > { > @@ -2163,7 +2161,6 @@ void kvfree_rcu_barrier(void) > flush_all_rcu_sheaves(); > __kvfree_rcu_barrier(); > } > -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier); > > /** > * kvfree_rcu_barrier_on_cache - Wait for in-flight kvfree_rcu() calls on a > @@ -2186,7 +2183,6 @@ void kvfree_rcu_barrier_on_cache(struct kmem_cache *s) > rcu_barrier(); > __kvfree_rcu_barrier(); > } > -EXPORT_SYMBOL_GPL(kvfree_rcu_barrier_on_cache); > > static unsigned long > kfree_rcu_shrink_count(struct shrinker *shrink, struct shrink_control *sc) > > --- > base-commit: b01f6ed9ff0c4581fc669044fa5b82a93b4ef144 > change-id: 20260730-unexport-barriers-439b3f69f791 >