From patchwork Wed Feb 19 21:00:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 11392667 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DFF11109A for ; Wed, 19 Feb 2020 21:03:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C050224654 for ; Wed, 19 Feb 2020 21:03:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="PS8q7Ipk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726645AbgBSVDD (ORCPT ); Wed, 19 Feb 2020 16:03:03 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:35864 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726703AbgBSVBF (ORCPT ); Wed, 19 Feb 2020 16:01:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=3U55cLjJX7KGhr1/TPumQnWQjhTiVjudfLMoODuK6ko=; b=PS8q7Ipk4cg0IHxyL7TDJ0kPvR zb4V1nHvxMn7qZHrrDPC1o7UjVCFFKAD/sNg/uYpld8ds/h+PlJUmxziX7r7wwKKWKQbLD/0Nw0UY +Rb6szB3+8z6ZcirP4eQ7sb300PHCMalkuN2AaNdCyXUkhRaXcgWINQsSB5xOk1ii0VtcnUQRgk0Z kZTwg6eEsRUWaZGEqktmxkaiIiVrOIiyfz6ZGVP9yWC9/sbsEAjJJ9g3TQdk9aDVWqEv5ZZHk9Gbb RXTEIYX1uu6kHcS6K42DK+fj3xoNiy0ZUwRbUd05BlCg6d+MRAhIO/iI8aV7zwNBN71/VuavyNAue IMz24TAA==; Received: from willy by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4WSu-0008TG-P4; Wed, 19 Feb 2020 21:01:04 +0000 From: Matthew Wilcox To: linux-fsdevel@vger.kernel.org Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, linux-xfs@vger.kernel.org Subject: [PATCH v7 01/24] mm: Move readahead prototypes from mm.h Date: Wed, 19 Feb 2020 13:00:40 -0800 Message-Id: <20200219210103.32400-2-willy@infradead.org> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200219210103.32400-1-willy@infradead.org> References: <20200219210103.32400-1-willy@infradead.org> MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: "Matthew Wilcox (Oracle)" The readahead code is part of the page cache so should be found in the pagemap.h file. force_page_cache_readahead is only used within mm, so move it to mm/internal.h instead. Remove the parameter names where they add no value, and rename the ones which were actively misleading. Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig --- block/blk-core.c | 1 + include/linux/mm.h | 19 ------------------- include/linux/pagemap.h | 8 ++++++++ mm/fadvise.c | 2 ++ mm/internal.h | 2 ++ 5 files changed, 13 insertions(+), 19 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 089e890ab208..41417bb93634 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include diff --git a/include/linux/mm.h b/include/linux/mm.h index 52269e56c514..68dcda9a2112 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2401,25 +2401,6 @@ extern vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf); int __must_check write_one_page(struct page *page); void task_dirty_inc(struct task_struct *tsk); -/* readahead.c */ -#define VM_READAHEAD_PAGES (SZ_128K / PAGE_SIZE) - -int force_page_cache_readahead(struct address_space *mapping, struct file *filp, - pgoff_t offset, unsigned long nr_to_read); - -void page_cache_sync_readahead(struct address_space *mapping, - struct file_ra_state *ra, - struct file *filp, - pgoff_t offset, - unsigned long size); - -void page_cache_async_readahead(struct address_space *mapping, - struct file_ra_state *ra, - struct file *filp, - struct page *pg, - pgoff_t offset, - unsigned long size); - extern unsigned long stack_guard_gap; /* Generic expand stack which grows the stack according to GROWS{UP,DOWN} */ extern int expand_stack(struct vm_area_struct *vma, unsigned long address); diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index ccb14b6a16b5..24894b9b90c9 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -614,6 +614,14 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask); void delete_from_page_cache_batch(struct address_space *mapping, struct pagevec *pvec); +#define VM_READAHEAD_PAGES (SZ_128K / PAGE_SIZE) + +void page_cache_sync_readahead(struct address_space *, struct file_ra_state *, + struct file *, pgoff_t index, unsigned long req_count); +void page_cache_async_readahead(struct address_space *, struct file_ra_state *, + struct file *, struct page *, pgoff_t index, + unsigned long req_count); + /* * Like add_to_page_cache_locked, but used to add newly allocated pages: * the page is new, so we can just run __SetPageLocked() against it. diff --git a/mm/fadvise.c b/mm/fadvise.c index 4f17c83db575..3efebfb9952c 100644 --- a/mm/fadvise.c +++ b/mm/fadvise.c @@ -22,6 +22,8 @@ #include +#include "internal.h" + /* * POSIX_FADV_WILLNEED could set PG_Referenced, and POSIX_FADV_NOREUSE could * deactivate the pages and clear PG_Referenced. diff --git a/mm/internal.h b/mm/internal.h index 3cf20ab3ca01..83f353e74654 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -49,6 +49,8 @@ void unmap_page_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, struct zap_details *details); +int force_page_cache_readahead(struct address_space *, struct file *, + pgoff_t index, unsigned long nr_to_read); extern unsigned int __do_page_cache_readahead(struct address_space *mapping, struct file *filp, pgoff_t offset, unsigned long nr_to_read, unsigned long lookahead_size);