From patchwork Wed Apr 6 23:02:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Howells X-Patchwork-Id: 12804190 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 F3B23C433EF for ; Wed, 6 Apr 2022 23:03:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237486AbiDFXFA (ORCPT ); Wed, 6 Apr 2022 19:05:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39650 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237472AbiDFXE6 (ORCPT ); Wed, 6 Apr 2022 19:04:58 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1DFBC10F6DD for ; Wed, 6 Apr 2022 16:03:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1649286180; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DdY7fXraB+kYCaafZemuyrgRrpIvDIqLb0inRFdnagc=; b=iiWbs/nZEuGn/ITVG27UsBYMzG0n6lLVCxGgw7axdmaEOiSBHl/DeT7UHArmqCIJVqzBu7 q4hQA1dO+TYtZRF1ibMhn2RzksCEOGqbVkrsJk7TeuA+JkpeBUbq5CA1epWMX92mcsGEJz m2KP2Nb0wgO9AjTYg1b/NjqFiKJVPQ4= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-623-53uIWRzFO6qrdoNzavT4tw-1; Wed, 06 Apr 2022 19:02:57 -0400 X-MC-Unique: 53uIWRzFO6qrdoNzavT4tw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C3F6D1C05ED9; Wed, 6 Apr 2022 23:02:55 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.33.37.45]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4E54E145BA41; Wed, 6 Apr 2022 23:02:48 +0000 (UTC) Organization: Red Hat UK Ltd. 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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 01/14] cifs: Add some helper functions From: David Howells To: linux-cachefs@redhat.com Cc: Steve French , Shyam Prasad N , Rohith Surabattula , linux-cifs@vger.kernel.org, dhowells@redhat.com, Steve French , Shyam Prasad N , Rohith Surabattula , Jeff Layton , linux-cifs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Date: Thu, 07 Apr 2022 00:02:45 +0100 Message-ID: <164928616583.457102.15157033997163988344.stgit@warthog.procyon.org.uk> In-Reply-To: <164928615045.457102.10607899252434268982.stgit@warthog.procyon.org.uk> References: <164928615045.457102.10607899252434268982.stgit@warthog.procyon.org.uk> User-Agent: StGit/1.4 MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Add some helper functions to manipulate the folio marks by iterating through a list of folios held in an xarray rather than using a page list. Signed-off-by: David Howells cc: Steve French cc: Shyam Prasad N cc: Rohith Surabattula cc: linux-cifs@vger.kernel.org --- fs/cifs/cifsfs.h | 3 ++ fs/cifs/cifssmb.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 88 insertions(+) diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 15a5c5db038b..1c77bbc0815f 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -110,6 +110,9 @@ extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *); extern const struct file_operations cifs_dir_ops; extern int cifs_dir_open(struct inode *inode, struct file *file); extern int cifs_readdir(struct file *file, struct dir_context *ctx); +extern void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len); +extern void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len); +extern void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int len); /* Functions related to dir entries */ extern const struct dentry_operations cifs_dentry_ops; diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 47e927c4ff8d..88e2de74f74f 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -27,6 +27,7 @@ #include "cifsglob.h" #include "cifsacl.h" #include "cifsproto.h" +#include "cifsfs.h" #include "cifs_unicode.h" #include "cifs_debug.h" #include "smb2proto.h" @@ -1928,6 +1929,90 @@ cifs_writedata_release(struct kref *refcount) kfree(wdata); } +/* + * Completion of write to server. + */ +void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len) +{ + struct address_space *mapping = inode->i_mapping; + struct folio *folio; + pgoff_t end; + + XA_STATE(xas, &mapping->i_pages, start / PAGE_SIZE); + + rcu_read_lock(); + + end = (start + len - 1) / PAGE_SIZE; + xas_for_each(&xas, folio, end) { + if (!folio_test_writeback(folio)) { + pr_err("bad %x @%llx page %lx %lx\n", + len, start, folio_index(folio), end); + BUG(); + } + + folio_detach_private(folio); + folio_end_writeback(folio); + } + + rcu_read_unlock(); +} + +/* + * Failure of write to server. + */ +void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len) +{ + struct address_space *mapping = inode->i_mapping; + struct folio *folio; + pgoff_t end; + + XA_STATE(xas, &mapping->i_pages, start / PAGE_SIZE); + + rcu_read_lock(); + + end = (start + len - 1) / PAGE_SIZE; + xas_for_each(&xas, folio, end) { + if (!folio_test_writeback(folio)) { + pr_err("bad %x @%llx page %lx %lx\n", + len, start, folio_index(folio), end); + BUG(); + } + + folio_set_error(folio); + folio_end_writeback(folio); + } + + rcu_read_unlock(); +} + +/* + * Redirty pages after a temporary failure. + */ +void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int len) +{ + struct address_space *mapping = inode->i_mapping; + struct folio *folio; + pgoff_t end; + + XA_STATE(xas, &mapping->i_pages, start / PAGE_SIZE); + + rcu_read_lock(); + + end = (start + len - 1) / PAGE_SIZE; + xas_for_each(&xas, folio, end) { + if (!folio_test_writeback(folio)) { + pr_err("bad %x @%llx page %lx %lx\n", + len, start, folio_index(folio), end); + BUG(); + } + + filemap_dirty_folio(folio->mapping, folio); + folio_end_writeback(folio); + } + + rcu_read_unlock(); +} + /* * Write failed with a retryable error. Resend the write request. It's also * possible that the page was redirtied so re-clean the page.