From patchwork Wed Aug 14 10:45:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13763329 Received: from mail-ej1-f54.google.com (mail-ej1-f54.google.com [209.85.218.54]) (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 6970B1AE86B; Wed, 14 Aug 2024 10:45:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723632329; cv=none; b=Fd4yrYpOHyfhJPhmopKISDAxu1Jyp11ZEuaJJ4z8Q2F+XLUr8ZbBMbFrdi6cSqWWsTGYbtG0bJxTRavzSq1H2msPji7ZlMAT9++snjhaNm60nqLxc6AZaqSs+pwiTmEo9yJHFaSewthLjz3mzX7zgzq/nlRlKo+N9GyHmvoXKts= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723632329; c=relaxed/simple; bh=w2+Gx2llTSCIEW4z0w0ChEqAXKpMZsr4Hk2SFKO+bsU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kHHBjHdqMVqiUfYa7y+0/LfkhhqlWIVdNf8QUIsI1UtZPwQ1DYHi+rOCVngOqZdjtc8dTkCat3nXURIHBRyD9jmGIQvA2RmMbg6tK5mpHigsU3JKWYh+5R7T3BkK0/AgFPHOdcsqkCFStWovCRUvwFjWdqBr9R0FDWVoluoPaP4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=MrbT4Az/; arc=none smtp.client-ip=209.85.218.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MrbT4Az/" Received: by mail-ej1-f54.google.com with SMTP id a640c23a62f3a-a7a9185e1c0so498025566b.1; Wed, 14 Aug 2024 03:45:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1723632325; x=1724237125; 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=coYbv4PcaCiw3s7iKLGpr0JKeDXM/58rHgT2Op2hXlo=; b=MrbT4Az/JZROeAovtsLxW4rgqg1yX5ADvPTWssGYum2DsMH75V5jnEoLWKEvGAkYrc aIHJwBy3+FStC4sq8E5VGUnY0RQCoApod7FfuDasUgzPR6invPy8Aqqd4SfLnlmMRKtv KV2ssW238YDa+JlWUMLJtmXOJPdzr+M+uQOlM95cwHaTqCIjhbGkA0w46t7J9YGJEaha Dh27elv1GZOIoGU2HTQZclUaM9QTfQgu4APTUjX64bjiVdsf9V7pGcKpR2PIisEv6CzY HFyQtVrPzAdJCoknFMxl0vXvQTDfzsFPWBnNfeHpMJW6xtW6Vkv76jjcykpyn8PyaM0Z EHrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723632325; x=1724237125; 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=coYbv4PcaCiw3s7iKLGpr0JKeDXM/58rHgT2Op2hXlo=; b=fNi4tEGDNBOqdamzVbEsJZzegd1YxYSsDfhNMiIj48ONzytBWl11csfTPkPnwLYk0G bkfkjrkMYsb+hcvm180/OtGAnoQpYZpoE8SwO9tZrgObD5BJUqYrqyGC+V2y0s7U4S2+ Qm54a8GrTkRdiR5PosrmCooqqVg+7bDhTleSVBwxvpgywabVGgzvqtVcSxfnzE1HS7J/ Ue2l5ae8owrEJnFQT8upWpTSJoexS7RKF8h+UgoBFSFbTTbD2PgKyBy92DsyB8XWNJ7z SmAmUKUU8OywAYhYh728sIIYe5O01gBynF35CsBfHX67GU/fIRpCoQItvpVaeuCYpCGQ w4cQ== X-Forwarded-Encrypted: i=1; AJvYcCU2Lnnz3/1xFQYgrzieYUxcMBV78IZz/RUjR6BlfF89XHBLUqOevRVZK7QdBoiUeaJhRWL7IOzaDFZVJeyHA0Xh51kQ2x+k2svov9o= X-Gm-Message-State: AOJu0Yxoo7L66hD92jVzZBquKX/A1hdTuN9Ubj+1emJ57yN1hKHtPHf7 eSU6SzO41/oTE5MBAi+c2MeTQKVQdNDX6wTHrPxgFJj/I8+0Y7Z1DMc02xxs X-Google-Smtp-Source: AGHT+IGfriIepvv++2PrjZ9Q9AjLepaO3ymcXMwFRj3SpDze6Sv3EXtnN23wF2rBhfZ8mcwRYC92+g== X-Received: by 2002:a17:906:cade:b0:a7a:1cfe:a262 with SMTP id a640c23a62f3a-a8367009c0emr168159466b.55.1723632325229; Wed, 14 Aug 2024 03:45:25 -0700 (PDT) Received: from 127.0.0.1localhost ([148.252.132.251]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a80f418692asm157212766b.224.2024.08.14.03.45.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Aug 2024 03:45:24 -0700 (PDT) From: Pavel Begunkov To: io-uring@vger.kernel.org Cc: Jens Axboe , asml.silence@gmail.com, Conrad Meyer , linux-block@vger.kernel.org, linux-mm@kvack.org Subject: [RFC 3/5] filemap: introduce filemap_invalidate_pages Date: Wed, 14 Aug 2024 11:45:52 +0100 Message-ID: X-Mailer: git-send-email 2.45.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 kiocb_invalidate_pages() is useful for the write path, however not everything is backed by kiocb and we want to reuse the function for bio based discard implementation. Extract and and reuse a new helper called filemap_invalidate_pages(), which takes a argument indicating whether it should be non-blocking and might return -EAGAIN. Signed-off-by: Pavel Begunkov --- include/linux/pagemap.h | 2 ++ mm/filemap.c | 18 +++++++++++++----- 2 files changed, 15 insertions(+), 5 deletions(-) diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index d9c7edb6422b..e39c3a7ce33c 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -32,6 +32,8 @@ int invalidate_inode_pages2_range(struct address_space *mapping, pgoff_t start, pgoff_t end); 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 write_inode_now(struct inode *, int sync); int filemap_fdatawrite(struct address_space *); diff --git a/mm/filemap.c b/mm/filemap.c index d62150418b91..74baec119239 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2712,14 +2712,12 @@ int kiocb_write_and_wait(struct kiocb *iocb, size_t count) } EXPORT_SYMBOL_GPL(kiocb_write_and_wait); -int kiocb_invalidate_pages(struct kiocb *iocb, size_t count) +int filemap_invalidate_pages(struct address_space *mapping, + loff_t pos, loff_t end, bool nowait) { - struct address_space *mapping = iocb->ki_filp->f_mapping; - loff_t pos = iocb->ki_pos; - loff_t end = pos + count - 1; int ret; - if (iocb->ki_flags & IOCB_NOWAIT) { + if (nowait) { /* we could block if there are any pages in the range */ if (filemap_range_has_page(mapping, pos, end)) return -EAGAIN; @@ -2738,6 +2736,16 @@ int kiocb_invalidate_pages(struct kiocb *iocb, size_t count) return invalidate_inode_pages2_range(mapping, pos >> PAGE_SHIFT, end >> PAGE_SHIFT); } + +int kiocb_invalidate_pages(struct kiocb *iocb, size_t count) +{ + struct address_space *mapping = iocb->ki_filp->f_mapping; + loff_t pos = iocb->ki_pos; + loff_t end = pos + count - 1; + + return filemap_invalidate_pages(mapping, pos, end, + iocb->ki_flags & IOCB_NOWAIT); +} EXPORT_SYMBOL_GPL(kiocb_invalidate_pages); /**