From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.migadu.com (out-188.mta1.migadu.com [95.215.58.188]) (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 E6FCF4F6487 for ; Fri, 4 Sep 2026 15:28:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.188 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788535694; cv=none; b=X0rNNyCtotG1hu0H+bpkTrALci+EDzEUGUwiIZE2YdKk9PC3fItujRlDNRsq25nYKw9Uu9Wta7192ZWG7icONUQi+ZlX/jO+Zx9uwbiQ5gTPig0DHHAkOtu7T/CfW/Y2KFi/HBabPOE9CQV4pe/W/r6PhFCOlWGAgdSnLfbFfGw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788535694; c=relaxed/simple; bh=vyXmZDCwjau2jk1K8j4vYUfZu4OC5buvBp5C3LE071U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ILbEZRlFPLALMnNYEgCGpCe0xnNxZpf+3JmqkHIJegTgqsBW+NFX9TTcHDugxO40r+JM7O/eOWUl9YnhXOIfOF8k5dmPTJyv6V63tGIcfULW+NijmrNtqAdLw1OPujIbDagI5zUTuh3Wb8Rc3CMfuWCaBsQKEAh09k++KeUa6Rc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=tu5VGnDV; arc=none smtp.client-ip=95.215.58.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="tu5VGnDV" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=vyXmZDCwjau2jk1K8j4vYUfZu4OC5buvBp5C3LE071U=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1788535690; v=1; x=1789140490; b=tu5VGnDVQzFBPBeLZ67fMxlpYqId5qe3jV8tJ9iEuS+NIvQA4V3S7MiTJjrlJc2K9vDhFw78 8HjIGTWxSAjVMMZHVz18uUwWTn7+NO8k6ATx+vgOcYnQ4FEFvwVFeiGtnK2rZssVLGzfSih2vHn 4rwDniKvZMksNyd+e6Km1n54= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id c0f3e87759aec0cb; Fri, 04 Sep 2026 15:28:10 +0000 X-Mizu-Trace-ID: c0f3e87759aec0cb X-Migadu-Flow: FLOW_OUT From: Kaitao Cheng To: Alexander Viro , Christian Brauner , Jan Kara , Dan Williams , Matthew Wilcox Cc: Muchun Song , linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-kernel@vger.kernel.org, Kaitao Cheng Subject: [PATCH 1/2] fs/dax: Remove unused dax_layout_busy_page() Date: Fri, 4 Sep 2026 23:27:48 +0800 Message-ID: <20260904152749.84493-2-kaitao.cheng@linux.dev> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260904152749.84493-1-kaitao.cheng@linux.dev> References: <20260904152749.84493-1-kaitao.cheng@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Kaitao Cheng dax_layout_busy_page() used to let filesystems scan an entire DAX mapping for pinned pages. All callers now use dax_break_layout(), which also handles waiting for busy pages and deleting DAX mapping entries once the range becomes idle. The remaining function is only a wrapper around dax_layout_busy_page_range() and has no in-tree users. Remove it together with its declaration, !CONFIG_FS_DAX stub, and exported symbol. Signed-off-by: Kaitao Cheng --- fs/dax.c | 6 ------ include/linux/dax.h | 6 ------ 2 files changed, 12 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index dad4efea7964..1e19e4a354ce 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -841,12 +841,6 @@ struct page *dax_layout_busy_page_range(struct address_space *mapping, } EXPORT_SYMBOL_GPL(dax_layout_busy_page_range); -struct page *dax_layout_busy_page(struct address_space *mapping) -{ - return dax_layout_busy_page_range(mapping, 0, LLONG_MAX); -} -EXPORT_SYMBOL_GPL(dax_layout_busy_page); - static int __dax_invalidate_entry(struct address_space *mapping, pgoff_t index, bool trunc) { diff --git a/include/linux/dax.h b/include/linux/dax.h index fe6c3ded1b50..05e59e45a1c2 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -155,7 +155,6 @@ int dax_writeback_mapping_range(struct address_space *mapping, struct dax_device *dax_dev, struct writeback_control *wbc); int dax_folio_reset_order(struct folio *folio); -struct page *dax_layout_busy_page(struct address_space *mapping); struct page *dax_layout_busy_page_range(struct address_space *mapping, loff_t start, loff_t end); dax_entry_t dax_lock_folio(struct folio *folio); void dax_unlock_folio(struct folio *folio, dax_entry_t cookie); @@ -173,11 +172,6 @@ static inline int fs_dax_get(struct dax_device *dax_dev, void *holder, { return -EOPNOTSUPP; } -static inline struct page *dax_layout_busy_page(struct address_space *mapping) -{ - return NULL; -} - static inline struct page *dax_layout_busy_page_range(struct address_space *mapping, pgoff_t start, pgoff_t nr_pages) { return NULL; -- 2.50.1 (Apple Git-155)