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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: D58AAC0009 X-Stat-Signature: kke9du3jzm9twm93e5d7w9rnc9txkutz X-Rspam-User: X-HE-Tag: 1747318240-120628 X-HE-Meta: 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 fMQPFd43 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 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: On 14.05.25 19:53, David Hildenbrand wrote: > On 13.05.25 19:48, Liam R. Howlett wrote: >> * David Hildenbrand [250512 08:34]: >>> The "memramp() shrinking" scenario no longer applies, so let's remove >>> that now-unnecessary handling. >>> >>> Reviewed-by: Lorenzo Stoakes >>> Acked-by: Ingo Molnar # x86 bits >>> Signed-off-by: David Hildenbrand >> >> small comment, but this looks good. >> >> Reviewed-by: Liam R. Howlett > > Thanks! > >> >>> --- >>> arch/x86/mm/pat/memtype_interval.c | 44 ++++-------------------------- >>> 1 file changed, 6 insertions(+), 38 deletions(-) >>> >>> diff --git a/arch/x86/mm/pat/memtype_interval.c b/arch/x86/mm/pat/memtype_interval.c >>> index 645613d59942a..9d03f0dbc4715 100644 >>> --- a/arch/x86/mm/pat/memtype_interval.c >>> +++ b/arch/x86/mm/pat/memtype_interval.c >>> @@ -49,26 +49,15 @@ INTERVAL_TREE_DEFINE(struct memtype, rb, u64, subtree_max_end, >>> >>> static struct rb_root_cached memtype_rbroot = RB_ROOT_CACHED; >>> >>> -enum { >>> - MEMTYPE_EXACT_MATCH = 0, >>> - MEMTYPE_END_MATCH = 1 >>> -}; >>> - >>> -static struct memtype *memtype_match(u64 start, u64 end, int match_type) >>> +static struct memtype *memtype_match(u64 start, u64 end) >>> { >>> struct memtype *entry_match; >>> >>> entry_match = interval_iter_first(&memtype_rbroot, start, end-1); >>> >>> while (entry_match != NULL && entry_match->start < end) { >> >> I think this could use interval_tree_for_each_span() instead. > > Fancy, let me look at this. Probably I'll send another patch on top of > this series to do that conversion. (as you found, patch #9 moves that code) Hmmm, I think interval_tree_for_each_span() does not apply here. Unless I am missing something important, interval_tree_for_each_span() does not work in combination with INTERVAL_TREE_DEFINE where we want to use a custom type as tree nodes (-> struct memtype). interval_tree_for_each_span() only works with the basic "struct interval_tree_node" implementation ... which is probably also why there are only a handful (3) of interval_tree_for_each_span() users, all in iommufd context? But staring at interval_tree.h vs. interval_tree_generic.h, I am a bit confused ... -- Cheers, David / dhildenb