Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932520AbZJAOJB (ORCPT ); Thu, 1 Oct 2009 10:09:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932385AbZJAOI7 (ORCPT ); Thu, 1 Oct 2009 10:08:59 -0400 Received: from victor.provo.novell.com ([137.65.250.26]:45098 "EHLO victor.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932535AbZJAOIx (ORCPT ); Thu, 1 Oct 2009 10:08:53 -0400 From: Suresh Jayaraman To: Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: netdev@vger.kernel.org, Neil Brown , Miklos Szeredi , Wouter Verhelst , Peter Zijlstra , trond.myklebust@fys.uio.no, Suresh Jayaraman Subject: [PATCH 25/31] nfs: teach the NFS client how to treat PG_swapcache pages Date: Thu, 1 Oct 2009 19:39:57 +0530 Message-Id: <1254406197-16555-1-git-send-email-sjayaraman@suse.de> X-Mailer: git-send-email 1.6.0.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 12727 Lines: 349 From: Peter Zijlstra Replace all relevant occurences of page->index and page->mapping in the NFS client with the new page_file_index() and page_file_mapping() functions. Signed-off-by: Peter Zijlstra Signed-off-by: Suresh Jayaraman --- fs/nfs/file.c | 6 ++--- fs/nfs/internal.h | 7 +++--- fs/nfs/pagelist.c | 6 ++--- fs/nfs/read.c | 6 ++--- fs/nfs/write.c | 56 ++++++++++++++++++++++++++++-------------------------- 5 files changed, 43 insertions(+), 38 deletions(-) Index: mmotm/fs/nfs/file.c =================================================================== --- mmotm.orig/fs/nfs/file.c +++ mmotm/fs/nfs/file.c @@ -427,7 +427,7 @@ static void nfs_invalidate_page(struct p if (offset != 0) return; /* Cancel any unstarted writes on this page */ - nfs_wb_page_cancel(page->mapping->host, page); + nfs_wb_page_cancel(page_file_mapping(page)->host, page); nfs_fscache_invalidate_page(page, page->mapping->host); } @@ -458,7 +458,7 @@ static int nfs_release_page(struct page */ static int nfs_launder_page(struct page *page) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; struct nfs_inode *nfsi = NFS_I(inode); dfprintk(PAGECACHE, "NFS: launder_page(%ld, %llu)\n", @@ -505,7 +505,7 @@ static int nfs_vm_page_mkwrite(struct vm nfs_fscache_wait_on_page_write(NFS_I(dentry->d_inode), page); lock_page(page); - mapping = page->mapping; + mapping = page_file_mapping(page); if (mapping != dentry->d_inode->i_mapping) goto out_unlock; Index: mmotm/fs/nfs/internal.h =================================================================== --- mmotm.orig/fs/nfs/internal.h +++ mmotm/fs/nfs/internal.h @@ -346,13 +346,14 @@ void nfs_super_set_maxbytes(struct super static inline unsigned int nfs_page_length(struct page *page) { - loff_t i_size = i_size_read(page->mapping->host); + loff_t i_size = i_size_read(page_file_mapping(page)->host); if (i_size > 0) { + pgoff_t page_index = page_file_index(page); pgoff_t end_index = (i_size - 1) >> PAGE_CACHE_SHIFT; - if (page->index < end_index) + if (page_index < end_index) return PAGE_CACHE_SIZE; - if (page->index == end_index) + if (page_index == end_index) return ((i_size - 1) & ~PAGE_CACHE_MASK) + 1; } return 0; Index: mmotm/fs/nfs/pagelist.c =================================================================== --- mmotm.orig/fs/nfs/pagelist.c +++ mmotm/fs/nfs/pagelist.c @@ -76,11 +76,11 @@ nfs_create_request(struct nfs_open_conte * update_nfs_request below if the region is not locked. */ req->wb_page = page; atomic_set(&req->wb_complete, 0); - req->wb_index = page->index; + req->wb_index = page_file_index(page); page_cache_get(page); BUG_ON(PagePrivate(page)); BUG_ON(!PageLocked(page)); - BUG_ON(page->mapping->host != inode); + BUG_ON(page_file_mapping(page)->host != inode); req->wb_offset = offset; req->wb_pgbase = offset; req->wb_bytes = count; @@ -365,7 +365,7 @@ void nfs_pageio_cond_complete(struct nfs * nfs_scan_list - Scan a list for matching requests * @nfsi: NFS inode * @dst: Destination list - * @idx_start: lower bound of page->index to scan + * @idx_start: lower bound of page_file_index(page) to scan * @npages: idx_start + npages sets the upper bound to scan. * @tag: tag to scan for * Index: mmotm/fs/nfs/read.c =================================================================== --- mmotm.orig/fs/nfs/read.c +++ mmotm/fs/nfs/read.c @@ -507,11 +507,11 @@ static const struct rpc_call_ops nfs_rea int nfs_readpage(struct file *file, struct page *page) { struct nfs_open_context *ctx; - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; int error; dprintk("NFS: nfs_readpage (%p %ld@%lu)\n", - page, PAGE_CACHE_SIZE, page->index); + page, PAGE_CACHE_SIZE, page_file_index(page)); nfs_inc_stats(inode, NFSIOS_VFSREADPAGE); nfs_add_stats(inode, NFSIOS_READPAGES, 1); @@ -565,7 +565,7 @@ static int readpage_async_filler(void *data, struct page *page) { struct nfs_readdesc *desc = (struct nfs_readdesc *)data; - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; struct nfs_page *new; unsigned int len; int error; Index: mmotm/fs/nfs/write.c =================================================================== --- mmotm.orig/fs/nfs/write.c +++ mmotm/fs/nfs/write.c @@ -121,7 +121,7 @@ static struct nfs_page *nfs_page_find_re static struct nfs_page *nfs_page_find_request(struct page *page) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; struct nfs_page *req = NULL; spin_lock(&inode->i_lock); @@ -133,16 +133,16 @@ static struct nfs_page *nfs_page_find_re /* Adjust the file length if we're writing beyond the end */ static void nfs_grow_file(struct page *page, unsigned int offset, unsigned int count) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; loff_t end, i_size; pgoff_t end_index; spin_lock(&inode->i_lock); i_size = i_size_read(inode); end_index = (i_size - 1) >> PAGE_CACHE_SHIFT; - if (i_size > 0 && page->index < end_index) + if (i_size > 0 && page_file_index(page) < end_index) goto out; - end = ((loff_t)page->index << PAGE_CACHE_SHIFT) + ((loff_t)offset+count); + end = page_file_offset(page) + ((loff_t)offset+count); if (i_size >= end) goto out; i_size_write(inode, end); @@ -155,7 +155,7 @@ out: static void nfs_set_pageerror(struct page *page) { SetPageError(page); - nfs_zap_mapping(page->mapping->host, page->mapping); + nfs_zap_mapping(page_file_mapping(page)->host, page_file_mapping(page)); } /* We can set the PG_uptodate flag if we see that a write request @@ -196,7 +196,7 @@ static int nfs_set_page_writeback(struct int ret = test_set_page_writeback(page); if (!ret) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; struct nfs_server *nfss = NFS_SERVER(inode); if (atomic_long_inc_return(&nfss->writeback) > @@ -210,7 +210,7 @@ static int nfs_set_page_writeback(struct static void nfs_end_page_writeback(struct page *page) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; struct nfs_server *nfss = NFS_SERVER(inode); end_page_writeback(page); @@ -225,7 +225,7 @@ static void nfs_end_page_writeback(struc static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio, struct page *page) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; struct nfs_page *req; int ret; @@ -268,12 +268,12 @@ static int nfs_page_async_flush(struct n static int nfs_do_writepage(struct page *page, struct writeback_control *wbc, struct nfs_pageio_descriptor *pgio) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGE); nfs_add_stats(inode, NFSIOS_WRITEPAGES, 1); - nfs_pageio_cond_complete(pgio, page->index); + nfs_pageio_cond_complete(pgio, page_file_index(page)); return nfs_page_async_flush(pgio, page); } @@ -285,7 +285,8 @@ static int nfs_writepage_locked(struct p struct nfs_pageio_descriptor pgio; int err; - nfs_pageio_init_write(&pgio, page->mapping->host, wb_priority(wbc)); + nfs_pageio_init_write(&pgio, page_file_mapping(page)->host, + wb_priority(wbc)); err = nfs_do_writepage(page, wbc, &pgio); nfs_pageio_complete(&pgio); if (err < 0) @@ -428,7 +429,8 @@ nfs_mark_request_commit(struct nfs_page NFS_PAGE_TAG_COMMIT); spin_unlock(&inode->i_lock); inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); - inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE); + inc_bdi_stat(page_file_mapping(req->wb_page)->backing_dev_info, + BDI_RECLAIMABLE); __mark_inode_dirty(inode, I_DIRTY_DATASYNC); } @@ -439,7 +441,8 @@ nfs_clear_request_commit(struct nfs_page if (test_and_clear_bit(PG_CLEAN, &(req)->wb_flags)) { dec_zone_page_state(page, NR_UNSTABLE_NFS); - dec_bdi_stat(page->mapping->backing_dev_info, BDI_RECLAIMABLE); + dec_bdi_stat(page_file_mapping(page)->backing_dev_info, + BDI_RECLAIMABLE); return 1; } return 0; @@ -551,7 +554,7 @@ nfs_need_commit(struct nfs_inode *nfsi) * nfs_scan_commit - Scan an inode for commit requests * @inode: NFS inode to scan * @dst: destination list - * @idx_start: lower bound of page->index to scan. + * @idx_start: lower bound of page_file_index(page) to scan. * @npages: idx_start + npages sets the upper bound to scan. * * Moves requests from the inode's 'commit' request list. @@ -664,7 +667,7 @@ out_err: static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, struct page *page, unsigned int offset, unsigned int bytes) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; struct nfs_page *req; int error; @@ -719,7 +722,7 @@ int nfs_flush_incompatible(struct file * nfs_release_request(req); if (!do_flush) return 0; - status = nfs_wb_page(page->mapping->host, page); + status = nfs_wb_page(page_file_mapping(page)->host, page); } while (status == 0); return status; } @@ -745,7 +748,7 @@ int nfs_updatepage(struct file *file, st unsigned int offset, unsigned int count) { struct nfs_open_context *ctx = nfs_file_open_context(file); - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; int status = 0; nfs_inc_stats(inode, NFSIOS_VFSUPDATEPAGE); @@ -753,7 +756,7 @@ int nfs_updatepage(struct file *file, st dprintk("NFS: nfs_updatepage(%s/%s %d@%lld)\n", file->f_path.dentry->d_parent->d_name.name, file->f_path.dentry->d_name.name, count, - (long long)(page_offset(page) + offset)); + (long long)(page_file_offset(page) + offset)); /* If we're not using byte range locks, and we know the page * is up to date, it may be more efficient to extend the write @@ -1028,7 +1031,7 @@ static void nfs_writeback_release_partia } if (nfs_write_need_commit(data)) { - struct inode *inode = page->mapping->host; + struct inode *inode = page_file_mapping(page)->host; spin_lock(&inode->i_lock); if (test_bit(PG_NEED_RESCHED, &req->wb_flags)) { @@ -1310,7 +1313,7 @@ nfs_commit_list(struct inode *inode, str nfs_list_remove_request(req); nfs_mark_request_commit(req); dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); - dec_bdi_stat(req->wb_page->mapping->backing_dev_info, + dec_bdi_stat(page_file_mapping(req->wb_page)->backing_dev_info, BDI_RECLAIMABLE); nfs_clear_page_tag_locked(req); } @@ -1500,10 +1503,10 @@ int nfs_wb_nocommit(struct inode *inode) int nfs_wb_page_cancel(struct inode *inode, struct page *page) { struct nfs_page *req; - loff_t range_start = page_offset(page); + loff_t range_start = page_file_offset(page); loff_t range_end = range_start + (loff_t)(PAGE_CACHE_SIZE - 1); struct writeback_control wbc = { - .bdi = page->mapping->backing_dev_info, + .bdi = page_file_mapping(page)->backing_dev_info, .sync_mode = WB_SYNC_ALL, .nr_to_write = LONG_MAX, .range_start = range_start, @@ -1536,7 +1539,8 @@ int nfs_wb_page_cancel(struct inode *ino } if (!PagePrivate(page)) return 0; - ret = nfs_sync_mapping_wait(page->mapping, &wbc, FLUSH_INVALIDATE); + ret = nfs_sync_mapping_wait(page_file_mapping(page), &wbc, + FLUSH_INVALIDATE); out: return ret; } @@ -1544,10 +1548,10 @@ out: static int nfs_wb_page_priority(struct inode *inode, struct page *page, int how) { - loff_t range_start = page_offset(page); + loff_t range_start = page_file_offset(page); loff_t range_end = range_start + (loff_t)(PAGE_CACHE_SIZE - 1); struct writeback_control wbc = { - .bdi = page->mapping->backing_dev_info, + .bdi = page_file_mapping(page)->backing_dev_info, .sync_mode = WB_SYNC_ALL, .nr_to_write = LONG_MAX, .range_start = range_start, @@ -1562,7 +1566,7 @@ static int nfs_wb_page_priority(struct i goto out_error; } else if (!PagePrivate(page)) break; - ret = nfs_sync_mapping_wait(page->mapping, &wbc, how); + ret = nfs_sync_mapping_wait(page_file_mapping(page), &wbc, how); if (ret < 0) goto out_error; } while (PagePrivate(page)); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/