From patchwork Wed Aug 16 10:38:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Muhammad Usama Anjum X-Patchwork-Id: 13354918 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27F01C05052 for ; Wed, 16 Aug 2023 10:39:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243562AbjHPKjO (ORCPT ); Wed, 16 Aug 2023 06:39:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243701AbjHPKiz (ORCPT ); Wed, 16 Aug 2023 06:38:55 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC26D2128; Wed, 16 Aug 2023 03:38:53 -0700 (PDT) Received: from localhost.localdomain (unknown [59.103.216.185]) (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) (Authenticated sender: usama.anjum) by madras.collabora.co.uk (Postfix) with ESMTPSA id F3E9166071F8; Wed, 16 Aug 2023 11:38:46 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1692182332; bh=KpgOAtB3tRXafG9E2ExNtij79OUEo5+z7uKo4KCrRus=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hg+aEKgn9Kfy0LQNoWTUxI+OHxK76Xkil6CalTgEIVK+AN4SUv7mULKfYIW8yegg9 7jVqNFlkxxQcDlj0gVIJCjHy/VbJztEF0rind7zOpOrVcsUtGlz42SWUqxEBjGFiQ+ Wg9/A5ZWuBFyMq6TjpGpEhTmpHtC6YZAvJWLIsNK2t1QU4568vOsVe2ZnfXzSd4LqN E1uWSjGDWNf9RYtLDKz7QrCMMt1l4IJwOMDC69easAhQniQzVB04Ruw+AZlOLdLGCA WFDQkkxqSgCb955FH4xkrYgELryrZ7MTF9HFiOFQsLJWgWpPHkYTxxAg3BTtTcmmc2 Blc0GdIBTNRDA== From: Muhammad Usama Anjum To: Peter Xu , Andrew Morton , =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= , Andrei Vagin , Danylo Mocherniuk , Paul Gofman Cc: Alexander Viro , Shuah Khan , Christian Brauner , Yang Shi , Vlastimil Babka , "Liam R . Howlett" , Yun Zhou , Suren Baghdasaryan , Alex Sierra , Muhammad Usama Anjum , Matthew Wilcox , Pasha Tatashin , Axel Rasmussen , "Gustavo A . R . Silva" , Dan Williams , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Greg KH , kernel@collabora.com, Cyrill Gorcunov , Mike Rapoport , Nadav Amit , David Hildenbrand Subject: [PATCH v31 4/6] tools headers UAPI: Update linux/fs.h with the kernel sources Date: Wed, 16 Aug 2023 15:38:12 +0500 Message-Id: <20230816103814.1522393-5-usama.anjum@collabora.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230816103814.1522393-1-usama.anjum@collabora.com> References: <20230816103814.1522393-1-usama.anjum@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org New IOCTL and macros has been added in the kernel sources. Update the tools header file as well. Signed-off-by: Muhammad Usama Anjum --- Changes in v30: - Comment update Changes in v29: - Comment updates Changes in v27: - Comment updates in fs.h Changes in v26: - Update according to tools/include/uapi/linux/fs.h Changes in v21: - Update tools/include/uapi/linux/fs.h Changes in v19: - Update fs.h according to precious patch --- tools/include/uapi/linux/fs.h | 59 +++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/tools/include/uapi/linux/fs.h b/tools/include/uapi/linux/fs.h index b7b56871029c5..da43810b74856 100644 --- a/tools/include/uapi/linux/fs.h +++ b/tools/include/uapi/linux/fs.h @@ -305,4 +305,63 @@ typedef int __bitwise __kernel_rwf_t; #define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT |\ RWF_APPEND) +/* Pagemap ioctl */ +#define PAGEMAP_SCAN _IOWR('f', 16, struct pm_scan_arg) + +/* Bitmasks provided in pm_scan_args masks and reported in page_region.categories. */ +#define PAGE_IS_WPALLOWED (1 << 0) +#define PAGE_IS_WRITTEN (1 << 1) +#define PAGE_IS_FILE (1 << 2) +#define PAGE_IS_PRESENT (1 << 3) +#define PAGE_IS_SWAPPED (1 << 4) +#define PAGE_IS_PFNZERO (1 << 5) +#define PAGE_IS_HUGE (1 << 6) + +/* + * struct page_region - Page region with flags + * @start: Start of the region + * @end: End of the region (exclusive) + * @categories: PAGE_IS_* category bitmask for the region + */ +struct page_region { + __u64 start; + __u64 end; + __u64 categories; +}; + +/* Flags for PAGEMAP_SCAN ioctl */ +#define PM_SCAN_WP_MATCHING (1 << 0) /* Write protect the pages matched. */ +#define PM_SCAN_CHECK_WPASYNC (1 << 1) /* Abort the scan when a non-WP-enabled page is found. */ + +/* + * struct pm_scan_arg - Pagemap ioctl argument + * @size: Size of the structure + * @flags: Flags for the IOCTL + * @start: Starting address of the region + * @end: Ending address of the region + * @walk_end Address where the scan stopped (written by kernel). + * walk_end == end (address tags cleared) informs that the scan completed on entire range. + * @vec: Address of page_region struct array for output + * @vec_len: Length of the page_region struct array + * @max_pages: Optional limit for number of returned pages (0 = disabled) + * @category_inverted: PAGE_IS_* categories which values match if 0 instead of 1 + * @category_mask: Skip pages for which any category doesn't match + * @category_anyof_mask: Skip pages for which no category matches + * @return_mask: PAGE_IS_* categories that are to be reported in `page_region`s returned + */ +struct pm_scan_arg { + __u64 size; + __u64 flags; + __u64 start; + __u64 end; + __u64 walk_end; + __u64 vec; + __u64 vec_len; + __u64 max_pages; + __u64 category_inverted; + __u64 category_mask; + __u64 category_anyof_mask; + __u64 return_mask; +}; + #endif /* _UAPI_LINUX_FS_H */