From patchwork Mon Nov 11 23:37:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Axboe X-Patchwork-Id: 13871472 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 197961CACF2 for ; Mon, 11 Nov 2024 23:48:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731368938; cv=none; b=F9cE8kbV7WxKdnrZgpla7XV9QkvVgwmkQFf/tsvUX55X373itVtc6j5n65EhbCIPbOhMGL73Ipw8QJQiMK57LGk5DiamYi9DN31tZgb4G6lRCEDAK6IJlJ7p3KQAHg87dyPUmTCrpT8aP3AeTD4u2XHhS10vhlGb/v7m6AR8OBk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731368938; c=relaxed/simple; bh=9Ma4XXKwKrbfCmk8++0FMznuxKmPjzqiFxHZUZ9JUvs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=p6WkUhzF/v5N/pEei0rFgvhZZMRvmiNLh0/U2oR8d0EUswOFD0Caj3I4EQAJsB5l0S5u/AQJMpkPPzqkOiffn4HAdbHsZwQJ3PB+FSonkG8stiBmVdPh1wLpUHlAhPqX6a1VSo0c58lq+ktLdlFJLqbkMkpnEQS8poh+EhjOsmM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=R4aiaU9j; arc=none smtp.client-ip=209.85.210.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="R4aiaU9j" Received: by mail-pf1-f170.google.com with SMTP id d2e1a72fcca58-71e625b00bcso4090755b3a.3 for ; Mon, 11 Nov 2024 15:48:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1731368936; x=1731973736; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=CL+fLnGK0BaMmMKm57rghb0D3nDN7TOwfaAxP5ktg80=; b=R4aiaU9jMdoXAa5LmgNMxyvFc/Uw4BX0xojgO8xFzGRanykKRWYDUDxa5zSd2FP+da 2/d03PDDT7mnhyzNolWF8mXaubonK+n7vPkCmjhw5Q5nTBMgqWqKJpLSFITxoFofw7Km 5bkWpUBbRX0UnN4AcqdLVnOCqscDu88xVBX/kYbwyfpp+nGwVyp3DuORQwedYFsxuAxf tJ76CARYeBEC+/KVXnkWi8pMKzdVicNjxFhmwbo6OPJgCa3gHhMLpQ87VKaS+rEuHMhB lToEni2gTX8sH3PRBY2+gSwr/RdQhyxPOogh4+g1caIeORHHruxmpnlqR3kSbFAW5Coy wRcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731368936; x=1731973736; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=CL+fLnGK0BaMmMKm57rghb0D3nDN7TOwfaAxP5ktg80=; b=jN6cbasIW+rFTLz4vUGvwMbvMwPgUhG5S1tbFAIp+Auu3WAgRFeR++x6sNsEQUMpkj /aWH4/BVsa1xtizuQeipKQaYyUdRn5mrRMHyxtbupxDyCqTSejx+/jauM2RMh34yphuh Er+ei5CbYR8/abRlS3R0nlHhbj8BLzog++0RP9XEmqmUr4SIMG6vURLvix4Bv2udTNvB PMvOahPq2805ojuI5XKgx4QV50HgkkvDxQLlEjtkfk19KfemBg39++dIVGgbsNc4SKYY mYUdAL+shhcS1hvlzYZfg9BSrAmo/8KOepnguvY2ffKF3bmRq9Q+BQbcp3Yzsh41pNjD kzcg== X-Forwarded-Encrypted: i=1; AJvYcCX4dgZVATuYxtZy4LdV6s6OTiqx6QUxI7+DcWNMWSsYqdJdkFFwnoXoiObm36pQXk/IbGXlnD6q2Pgu9e+N@vger.kernel.org X-Gm-Message-State: AOJu0Yzbt+K/kF2AW+6GDtHVFt/A0iAQ5cySdA1dJQ7hNqmj+gqB+esr eLRBOh8j4rKmNtYo2mu1gr6Z6LNwuFXaCgx5JSwFs0+jprESSre0WyKlxKoellY= X-Google-Smtp-Source: AGHT+IGkT/vleDHQ8M3Hw8Ha2+EPGBpXcHS4Q/PdXfOEbEN6KEGRSFgIDbBBEJ7VgYq4tyZ3FLhGBg== X-Received: by 2002:a05:6a00:3cd1:b0:71e:64fe:965f with SMTP id d2e1a72fcca58-72413350e9cmr19827356b3a.20.1731368936369; Mon, 11 Nov 2024 15:48:56 -0800 (PST) Received: from localhost.localdomain ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-724078a7ee9sm10046057b3a.64.2024.11.11.15.48.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Nov 2024 15:48:55 -0800 (PST) From: Jens Axboe To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Cc: hannes@cmpxchg.org, clm@meta.com, linux-kernel@vger.kernel.org, willy@infradead.org, kirill@shutemov.name, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, Jens Axboe Subject: [PATCH 06/16] mm/truncate: add folio_unmap_invalidate() helper Date: Mon, 11 Nov 2024 16:37:33 -0700 Message-ID: <20241111234842.2024180-7-axboe@kernel.dk> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241111234842.2024180-1-axboe@kernel.dk> References: <20241111234842.2024180-1-axboe@kernel.dk> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a folio_unmap_invalidate() helper, which unmaps and invalidates a given folio. The caller must already have locked the folio. Use this new helper in invalidate_inode_pages2_range(), rather than duplicate the code there. In preparation for using this elsewhere as well, have it take a gfp_t mask rather than assume GFP_KERNEL is the right choice. This bubbles back to invalidate_complete_folio2() as well. Signed-off-by: Jens Axboe --- include/linux/pagemap.h | 2 ++ mm/truncate.c | 33 ++++++++++++++++++++------------- 2 files changed, 22 insertions(+), 13 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 8afacb7520d4..d55bf995bd9e 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -34,6 +34,8 @@ int kiocb_invalidate_pages(struct kiocb *iocb, size_t count); void kiocb_invalidate_post_direct_write(struct kiocb *iocb, size_t count); int filemap_invalidate_pages(struct address_space *mapping, loff_t pos, loff_t end, bool nowait); +int folio_unmap_invalidate(struct address_space *mapping, struct folio *folio, + gfp_t gfp); int write_inode_now(struct inode *, int sync); int filemap_fdatawrite(struct address_space *); diff --git a/mm/truncate.c b/mm/truncate.c index 0668cd340a46..5663c3f1d548 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -547,12 +547,12 @@ EXPORT_SYMBOL(invalidate_mapping_pages); * sitting in the folio_add_lru() caches. */ static int invalidate_complete_folio2(struct address_space *mapping, - struct folio *folio) + struct folio *folio, gfp_t gfp_mask) { if (folio->mapping != mapping) return 0; - if (!filemap_release_folio(folio, GFP_KERNEL)) + if (!filemap_release_folio(folio, gfp_mask)) return 0; spin_lock(&mapping->host->i_lock); @@ -584,6 +584,23 @@ static int folio_launder(struct address_space *mapping, struct folio *folio) return mapping->a_ops->launder_folio(folio); } +int folio_unmap_invalidate(struct address_space *mapping, struct folio *folio, + gfp_t gfp) +{ + int ret; + + VM_BUG_ON_FOLIO(!folio_test_locked(folio), folio); + + if (folio_mapped(folio)) + unmap_mapping_folio(folio); + BUG_ON(folio_mapped(folio)); + + ret = folio_launder(mapping, folio); + if (!ret && !invalidate_complete_folio2(mapping, folio, gfp)) + return -EBUSY; + return ret; +} + /** * invalidate_inode_pages2_range - remove range of pages from an address_space * @mapping: the address_space @@ -641,18 +658,8 @@ int invalidate_inode_pages2_range(struct address_space *mapping, folio_unlock(folio); continue; } - VM_BUG_ON_FOLIO(!folio_contains(folio, indices[i]), folio); folio_wait_writeback(folio); - - if (folio_mapped(folio)) - unmap_mapping_folio(folio); - BUG_ON(folio_mapped(folio)); - - ret2 = folio_launder(mapping, folio); - if (ret2 == 0) { - if (!invalidate_complete_folio2(mapping, folio)) - ret2 = -EBUSY; - } + ret2 = folio_unmap_invalidate(mapping, folio, GFP_KERNEL); if (ret2 < 0) ret = ret2; folio_unlock(folio);