From patchwork Thu Aug 22 03:35:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 13772592 Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42]) (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 3F36C39FDD; Thu, 22 Aug 2024 03:35:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724297742; cv=none; b=GYRrkBPqxtIPA0QTYQjzqqDtfhdoRZfAQu6bd4/nDAGoD/AuTGOhuFumFPZuJt41dw+ei4OiFHJjNzpeKbr+FGZRHhOhTnFiV5jYzE4kuqJ8mAEVlH0Z04Rgid+1VczJOnt2u2OH2kD792kz7ZrzcevOua67SESRT8TtQAiuXBM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724297742; c=relaxed/simple; bh=w2+Gx2llTSCIEW4z0w0ChEqAXKpMZsr4Hk2SFKO+bsU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iI3CkwoI+RAme40MoIoGcxhoKjGd0vP5QezZ9UCRnKczW7S0pHTTGuTLcVD5r8t/vWlelCkGwRyw3xam76ttHkvCEJ90gQ3qOLlcYrM/9PzQNEQpM4CvBU6Mcn6KCzyu9jqAVKcWLOiamGYpyBK8mMcSDTci5PmR7bda4TfgDus= 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=iwVF/m/v; arc=none smtp.client-ip=209.85.221.42 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="iwVF/m/v" Received: by mail-wr1-f42.google.com with SMTP id ffacd0b85a97d-3719896b7c8so107862f8f.3; Wed, 21 Aug 2024 20:35:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1724297739; x=1724902539; 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=iwVF/m/vaGMWqIWVxUKFgzwYj3eQiqAD4eAlZv77LMFB8QcYEbIyLHUIgGRnHSGZ7G YP7xVgISsA8iZ2rGx+WIRLmNKimlvXr2/j4etDl00yTvvVIqSuVGj4ZUM4gE618RWo+m mGfy+XKGiZ5jSaY3AnXCg3+XN+l09ILNbEAV/M+s+8AQrhcOlVV8ImtdQy3en1nwGuK/ iUA+4YrX0iIkMj+LfYoAXPr+Z8pgX0gNT/Hrktun+0DhNanI2Anc+hx84RfaHFssp0gA 2V5VN7VgB1Xh6+66RyTtFrXiomd/qW6tVs4IP/1xi12JpOGtn93H1JPWL5V0g1VEI35a BisQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724297739; x=1724902539; 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=l2bKP73EePGnG6jhT6k02X96HiCXtHS0Yk6zLZZwu6PsNU8YCI4hMO6Aojj0L+buiL idG5H3/VghON1B+bxOp8Y0bJeg8a2IaiwkjcNttIVgfeJ/5fVjZFzvtTt4DxlPxGiAqS R+V+18Iaektnpw2EDKn7eBGdn+dwe/6ZWiOZGmnkDHWa64+Zp8OjUJyLAd93CVmqgcdD dqsiXWtrMENIIS7x1f2ZjIyi4rNuptaUpflTZ31KacI6grQvCDqmiLRZF4ZjPSc59oQx o5ydbzJ7RQPoWxI02lErcqpJo9V1dXuNAj7IZPxIK2Ew/ERGaP7EKXyAcUK18XJRXZA1 D6+w== X-Forwarded-Encrypted: i=1; AJvYcCUbbScAvFAhe0FANwt4UZk/h/b/fSoRtAatn/F8RfIc+oucjDIZqFfezqBUfxAv92PcoGP13PEiM0Ba5Q==@vger.kernel.org X-Gm-Message-State: AOJu0YzLlm99QjyZUwgB/5UoCH5HLIj310JkUOA8y1X/4EsAUfJiolw9 XAxJZd/jf3MCZdg9pncw9kF5tbydhg45fPDOLsfejMf0h3mO3q1cqt93WQ== X-Google-Smtp-Source: AGHT+IHP7tOkU4byOXFqX59kqg4UjLfQGE6iQhOnMRCrdta+ni4FkcLFL3OtNWEW+YJSDoGtQ2G8Gw== X-Received: by 2002:adf:ef0b:0:b0:371:8763:763c with SMTP id ffacd0b85a97d-372fd5a45d5mr2872795f8f.33.1724297738908; Wed, 21 Aug 2024 20:35:38 -0700 (PDT) Received: from 127.0.0.1localhost ([148.252.128.6]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42abefc626fsm45491995e9.31.2024.08.21.20.35.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 20:35:38 -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: [PATCH v2 3/7] filemap: introduce filemap_invalidate_pages Date: Thu, 22 Aug 2024 04:35:53 +0100 Message-ID: <5bf2b0f08ec25fa649f04c0847722c6b028f660c.1724297388.git.asml.silence@gmail.com> 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); /**