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t=1720067549; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Hlyc02hswOFBPpFjPMKLH2SPKevIA4btQnEnfz8PzX8=; b=udDCKM8VSh5fm40PS9NUBV30hL3Hc21Fph1pBda42Ie9OAKZOIyY5YZKKy4Vasv/sNi9T4 b+SyyOfTIIs5xDDg== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 3048813889; Thu, 4 Jul 2024 04:32:28 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id kBsMB9wlhmbnDAAAD6G6ig (envelope-from ); Thu, 04 Jul 2024 04:32:28 +0000 From: Oscar Salvador To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Peter Xu , Muchun Song , David Hildenbrand , SeongJae Park , Miaohe Lin , Michal Hocko , Matthew Wilcox , Christophe Leroy , Oscar Salvador Subject: [PATCH 31/45] mm/mincore: Create mincore_pud_range to handle PUD-mapped hugetlb vmas Date: Thu, 4 Jul 2024 06:31:18 +0200 Message-ID: <20240704043132.28501-32-osalvador@suse.de> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240704043132.28501-1-osalvador@suse.de> References: <20240704043132.28501-1-osalvador@suse.de> MIME-Version: 1.0 X-Stat-Signature: 5ewfbjqef45zrw6moyy5tps84pcs76j9 X-Rspamd-Queue-Id: 9A2F74000B X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1720067550-62382 X-HE-Meta: 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 DWsBnH6W 34mG110U7vZkWqPYzKaH+oHNal2BsVJOkPS64fQmIzgzcVJ1X/qLbt+C94AYz2Q/fdkymHFP7V25oCuo/twHnzDlyt5b7YO5WyPvKzwcLIa4o64PJTTSmowXP4Sj5Uhm/YtD1aOYtgFDL1pXoGpPNu6ObZSLAiTR6w0dIZ85g0HuPGLL2DsKMMoS5+cvscEyvpW8CXQA7UElc/eLUVBrb6YiYrfScdJ4Ce68+tOTY8w6K5Ahhdre0TRIn1wGyofJW+x5jC08+OOde9DNO/td6OlQyGA== 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: Normal THP cannot be PUD-mapped (besides devmap), but hugetlb can, so create mincore_pud_range in order to handle PUD-mapped hugetlb vmas. Signed-off-by: Oscar Salvador --- mm/mincore.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/mm/mincore.c b/mm/mincore.c index 5154bc705f60..786df7246899 100644 --- a/mm/mincore.c +++ b/mm/mincore.c @@ -98,6 +98,25 @@ static int mincore_unmapped_range(unsigned long addr, unsigned long end, return 0; } +static int mincore_pud_range(pud_t *pud, unsigned long addr, unsigned long end, + struct mm_walk *walk) +{ +#ifdef CONFIG_PGTABLE_HAS_HUGE_LEAVES + spinlock_t *ptl; + unsigned char *vec = walk->private; + int nr = (end - addr) >> PAGE_SHIFT; + struct vm_area_struct *vma = walk->vma; + + ptl = pud_huge_lock(pud, vma); + if (!ptl) + return 0; + + memset(vec, 1, nr); + spin_unlock(ptl); +#endif + return 0; +} + static int mincore_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { @@ -175,6 +194,7 @@ static inline bool can_do_mincore(struct vm_area_struct *vma) } static const struct mm_walk_ops mincore_walk_ops = { + .pud_entry = mincore_pud_range, .pmd_entry = mincore_pte_range, .pte_hole = mincore_unmapped_range, .hugetlb_entry = mincore_hugetlb,