Return-Path: Received: from int-mailstore01.merit.edu ([207.75.116.232]:45687 "EHLO int-mailstore01.merit.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754707Ab1FLXpA (ORCPT ); Sun, 12 Jun 2011 19:45:00 -0400 Message-Id: <5242eddc4e010fb8a1dadd050ff6ec0ab6f3dd27.1307921138.git.rees@umich.edu> In-Reply-To: References: Date: Sun, 12 Jun 2011 19:44:58 -0400 Subject: [PATCH 28/34] pnfsblock: write_end_cleanup From: Jim Rees To: linux-nfs@vger.kernel.org Cc: peter honeyman Sender: linux-nfs-owner@vger.kernel.org List-ID: Content-Type: text/plain MIME-Version: 1.0 From: Fred Isaman Ensure all pages in block are marked for initialization if needed. [pnfsblock: Update to 2.6.29] [pnfsblock: write_end_cleanup adjust for removed ok_to_use_pnfs] Signed-off-by: Fred Isaman Signed-off-by: Benny Halevy --- fs/nfs/blocklayout/blocklayout.c | 54 ++++++++++++++++++++++++++++++++++++++ 1 files changed, 54 insertions(+), 0 deletions(-) diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 8914143..a40616b 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -794,6 +794,60 @@ bl_write_end(struct inode *inode, struct page *page, loff_t pos, static void bl_write_end_cleanup(struct file *filp, struct pnfs_fsdata *fsdata) { + struct page *page; + pgoff_t index; + sector_t *pos; + struct address_space *mapping = filp->f_mapping; + struct pnfs_fsdata *fake_data; + struct pnfs_layout_segment *lseg; + + if (!fsdata) + return; + lseg = fsdata->lseg; + if (!lseg) + return; + pos = fsdata->private; + if (!pos) + return; + dprintk("%s enter with pos=%llu\n", __func__, (u64)(*pos)); + for (; *pos != ~0; pos++) { + index = *pos >> (PAGE_CACHE_SHIFT - 9); + /* XXX How do we properly deal with failures here??? */ + page = grab_cache_page_write_begin(mapping, index, 0); + if (!page) { + printk(KERN_ERR "%s BUG BUG BUG NoMem\n", __func__); + continue; + } + dprintk("%s: Examining block page\n", __func__); + print_page(page); + if (!PageMappedToDisk(page)) { + /* XXX How do we properly deal with failures here??? */ + dprintk("%s Marking block page\n", __func__); + init_page_for_write(BLK_LSEG2EXT(fsdata->lseg), page, + PAGE_CACHE_SIZE, PAGE_CACHE_SIZE, + NULL); + print_page(page); + fake_data = kzalloc(sizeof(*fake_data), GFP_KERNEL); + if (!fake_data) { + printk(KERN_ERR "%s BUG BUG BUG NoMem\n", + __func__); + unlock_page(page); + continue; + } + get_lseg(lseg); + fake_data->lseg = lseg; + fake_data->bypass_eof = 1; + mapping->a_ops->write_end(filp, mapping, + index << PAGE_CACHE_SHIFT, + PAGE_CACHE_SIZE, + PAGE_CACHE_SIZE, + page, fake_data); + /* Note fake_data is freed by nfs_write_end */ + } else + unlock_page(page); + } + kfree(fsdata->private); + fsdata->private = NULL; } static struct pnfs_layoutdriver_type blocklayout_type = { -- 1.7.4.1