From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Vishal Moola (Oracle)" Subject: [PATCH v2 09/23] cifs: Convert wdata_alloc_and_fillpages() to use filemap_get_folios_tag() Date: Mon, 12 Sep 2022 11:22:10 -0700 Message-ID: <20220912182224.514561-10-vishal.moola@gmail.com> References: <20220912182224.514561-1-vishal.moola@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; 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:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=YET10ng1nR0ea8GMjh+/irz/Zcx26qfqc4LRuHlkdsg=; b=ZV7fsAaE4y9M2d4x5S2mKHNDlF dX3eeA1ZvxAidbwSiTIvZz0ErX8Xb/HiRYMFaof48v543Ws/ASOAqznhA20f069bXUy+1wKCeNGbe hIsYqSkiNpnDHqazSVN5pMaWpD/2PM4MEdu21bH7rS27mhdIQ2dBKJYH1fo/ekQH7unk=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; 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:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=YET10ng1nR0ea8GMjh+/irz/Zcx26qfqc4LRuHlkdsg=; b=UfAzEg04whi8B8KrWL53xY9HqT sPmv56eOT4bTk0WiERuR6P7LvPn1B3A8+db3xpp+rCc2setfmgTm4GJKVozOl5hik8c/ouNnb5aFT 3e2vDv3Fqep+cMxQPrwzjIvEBlpDY/2UPVz713PzsjJJQXkr+zwS5Swo8lewBPMZv7Jc=; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=YET10ng1nR0ea8GMjh+/irz/Zcx26qfqc4LRuHlkdsg=; b=CMK8yl635va04HaezlxwqGhnc+NtummcvVNmTRj+Aw0HdTOOjXrLWIHc/0WvZVthz9 bzWNt4H/6kQaZG8pah0JB/zkRrjO2mSmUA4YdG+oM60f4pwLDpVOwTiFSDJmLRBSSkqW EEW2Wo57bBwPulyzdO9DrvL55rSoSkqNNPVgL8G8YFmqICIR1UW6FDiPSgv2lsM+Q0m6 /oU7NxbfHNZ8dpXgDc+YLPWC34LYvTWZ2BfNI54J83f2NzdnRxeNf+B0Hi7YTy4uPL/r upU0ewURmuwmSgNW8yL4rSBCTkMXuY32/p+GZ9IWURvmoFbJFCIyPmyZRHOiuWFLgtsj nOrg== In-Reply-To: <20220912182224.514561-1-vishal.moola@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: linux-fsdevel@vger.kernel.org Cc: linux-cifs@vger.kernel.org, linux-nilfs@vger.kernel.org, "Vishal Moola (Oracle)" , linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-mm@kvack.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org Convert function to use folios. This is in preparation for the removal of find_get_pages_range_tag(). Now also supports the use of large folios. Since tofind might be larger than the max number of folios in a folio_batch (15), we loop through filling in wdata->pages pulling more batches until we either reach tofind pages or run out of folios. This function may not return all pages in the last found folio before tofind pages are reached. Signed-off-by: Vishal Moola (Oracle) --- fs/cifs/file.c | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index fa738adc031f..c4da53b57369 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2517,14 +2517,41 @@ wdata_alloc_and_fillpages(pgoff_t tofind, struct address_space *mapping, unsigned int *found_pages) { struct cifs_writedata *wdata; - + struct folio_batch fbatch; + unsigned int i, idx, p, nr; wdata = cifs_writedata_alloc((unsigned int)tofind, cifs_writev_complete); if (!wdata) return NULL; - *found_pages = find_get_pages_range_tag(mapping, index, end, - PAGECACHE_TAG_DIRTY, tofind, wdata->pages); + folio_batch_init(&fbatch); + *found_pages = 0; + +again: + nr = filemap_get_folios_tag(mapping, index, end, + PAGECACHE_TAG_DIRTY, &fbatch); + if (!nr) + goto out; /* No dirty pages left in the range */ + + for (i = 0; i < nr; i++) { + struct folio *folio = fbatch.folios[i]; + + idx = 0; + p = folio_nr_pages(folio); +add_more: + wdata->pages[*found_pages] = folio_page(folio, idx); + if (++*found_pages == tofind) { + folio_batch_release(&fbatch); + goto out; + } + if (++idx < p) { + folio_ref_inc(folio); + goto add_more; + } + } + folio_batch_release(&fbatch); + goto again; +out: return wdata; } -- 2.36.1