Return-Path: Received: from mx2.suse.de ([195.135.220.15]:37022 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726565AbeK2Tyw (ORCPT ); Thu, 29 Nov 2018 14:54:52 -0500 From: Nikolay Borisov Subject: [PATCH 2/2] fs: Don't open-code lru_to_page To: Michal Hocko Cc: linux-kernel@vger.kernel.org, David Howells , Chris Mason , Josef Bacik , David Sterba , "Yan, Zheng" , Sage Weil , Ilya Dryomov , Steve French , Theodore Ts'o , Andreas Dilger , Mark Fasheh , Joel Becker , Mike Marshall , Martin Brandenburg , Andrew Morton , Mike Rapoport , Matthew Wilcox , Randy Dunlap , YueHaibing , Shakeel Butt , Dan Williams , linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-ext4@vger.kernel.org, ocfs2-devel@oss.oracle.com, devel@lists.orangefs.org, linux-mm@kvack.org References: <20181129075301.29087-1-nborisov@suse.com> <20181129075301.29087-2-nborisov@suse.com> <20181129081826.GO6923@dhcp22.suse.cz> Message-ID: <0921bc8f-b899-4925-51f2-a9f45d4c906a@suse.com> Date: Thu, 29 Nov 2018 10:50:08 +0200 MIME-Version: 1.0 In-Reply-To: <20181129081826.GO6923@dhcp22.suse.cz> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-ext4-owner@vger.kernel.org List-ID: On 29.11.18 г. 10:18 ч., Michal Hocko wrote: > On Thu 29-11-18 09:52:57, Nikolay Borisov wrote: >> There are a bunch of filesystems which essentially open-code lru_to_page >> helper. Change them to using the helper. No functional changes. > > I would just squash the two into a single patch. It makes the first one > more obvious. Or is there any reason to have them separate? No reason, just didn't know how people would react so that's why I chose to send as two separate. If I squash them who would be the best person to take them ? > >> Signed-off-by: Nikolay Borisov > > Acked-by: Michal Hocko > >> --- >> >> Since this is a mostly mechanical change I've actually batched all of them in >> a single patch. >> >> fs/afs/file.c | 5 +++-- >> fs/btrfs/extent_io.c | 2 +- >> fs/ceph/addr.c | 5 ++--- >> fs/cifs/file.c | 3 ++- >> fs/ext4/readpage.c | 2 +- >> fs/ocfs2/aops.c | 3 ++- >> fs/orangefs/inode.c | 2 +- >> mm/swap.c | 2 +- >> 8 files changed, 13 insertions(+), 11 deletions(-) >> >> diff --git a/fs/afs/file.c b/fs/afs/file.c >> index d6bc3f5d784b..323ae9912203 100644 >> --- a/fs/afs/file.c >> +++ b/fs/afs/file.c >> @@ -17,6 +17,7 @@ >> #include >> #include >> #include >> +#include >> #include "internal.h" >> >> static int afs_file_mmap(struct file *file, struct vm_area_struct *vma); >> @@ -441,7 +442,7 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping, >> /* Count the number of contiguous pages at the front of the list. Note >> * that the list goes prev-wards rather than next-wards. >> */ >> - first = list_entry(pages->prev, struct page, lru); >> + first = lru_to_page(pages); >> index = first->index + 1; >> n = 1; >> for (p = first->lru.prev; p != pages; p = p->prev) { >> @@ -473,7 +474,7 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping, >> * page at the end of the file. >> */ >> do { >> - page = list_entry(pages->prev, struct page, lru); >> + page = lru_to_page(pages); >> list_del(&page->lru); >> index = page->index; >> if (add_to_page_cache_lru(page, mapping, index, >> diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c >> index 19f4b8fd654f..8332c5f4b1c3 100644 >> --- a/fs/btrfs/extent_io.c >> +++ b/fs/btrfs/extent_io.c >> @@ -4104,7 +4104,7 @@ int extent_readpages(struct address_space *mapping, struct list_head *pages, >> u64 prev_em_start = (u64)-1; >> >> for (page_idx = 0; page_idx < nr_pages; page_idx++) { >> - page = list_entry(pages->prev, struct page, lru); >> + page = lru_to_page(pages); >> >> prefetchw(&page->flags); >> list_del(&page->lru); >> diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c >> index 8eade7a993c1..5d0c05e288cc 100644 >> --- a/fs/ceph/addr.c >> +++ b/fs/ceph/addr.c >> @@ -306,7 +306,7 @@ static int start_read(struct inode *inode, struct ceph_rw_context *rw_ctx, >> struct ceph_osd_client *osdc = >> &ceph_inode_to_client(inode)->client->osdc; >> struct ceph_inode_info *ci = ceph_inode(inode); >> - struct page *page = list_entry(page_list->prev, struct page, lru); >> + struct page *page = lru_to_page(page_list); >> struct ceph_vino vino; >> struct ceph_osd_request *req; >> u64 off; >> @@ -333,8 +333,7 @@ static int start_read(struct inode *inode, struct ceph_rw_context *rw_ctx, >> if (got) >> ceph_put_cap_refs(ci, got); >> while (!list_empty(page_list)) { >> - page = list_entry(page_list->prev, >> - struct page, lru); >> + page = lru_to_page(page_list); >> list_del(&page->lru); >> put_page(page); >> } >> diff --git a/fs/cifs/file.c b/fs/cifs/file.c >> index 74c33d5fafc8..b16a4d887d17 100644 >> --- a/fs/cifs/file.c >> +++ b/fs/cifs/file.c >> @@ -33,6 +33,7 @@ >> #include >> #include >> #include >> +#include >> #include >> #include "cifsfs.h" >> #include "cifspdu.h" >> @@ -3975,7 +3976,7 @@ readpages_get_pages(struct address_space *mapping, struct list_head *page_list, >> >> INIT_LIST_HEAD(tmplist); >> >> - page = list_entry(page_list->prev, struct page, lru); >> + page = lru_to_page(page_list); >> >> /* >> * Lock the page and put it in the cache. Since no one else >> diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c >> index f461d75ac049..6aa282ee455a 100644 >> --- a/fs/ext4/readpage.c >> +++ b/fs/ext4/readpage.c >> @@ -128,7 +128,7 @@ int ext4_mpage_readpages(struct address_space *mapping, >> >> prefetchw(&page->flags); >> if (pages) { >> - page = list_entry(pages->prev, struct page, lru); >> + page = lru_to_page(pages); >> list_del(&page->lru); >> if (add_to_page_cache_lru(page, mapping, page->index, >> readahead_gfp_mask(mapping))) >> diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c >> index eb1ce30412dc..832c1759a09a 100644 >> --- a/fs/ocfs2/aops.c >> +++ b/fs/ocfs2/aops.c >> @@ -30,6 +30,7 @@ >> #include >> #include >> #include >> +#include >> >> #include >> >> @@ -397,7 +398,7 @@ static int ocfs2_readpages(struct file *filp, struct address_space *mapping, >> * Check whether a remote node truncated this file - we just >> * drop out in that case as it's not worth handling here. >> */ >> - last = list_entry(pages->prev, struct page, lru); >> + last = lru_to_page(pages); >> start = (loff_t)last->index << PAGE_SHIFT; >> if (start >= i_size_read(inode)) >> goto out_unlock; >> diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c >> index fe53381b26b1..f038235c64bd 100644 >> --- a/fs/orangefs/inode.c >> +++ b/fs/orangefs/inode.c >> @@ -77,7 +77,7 @@ static int orangefs_readpages(struct file *file, >> for (page_idx = 0; page_idx < nr_pages; page_idx++) { >> struct page *page; >> >> - page = list_entry(pages->prev, struct page, lru); >> + page = lru_to_page(pages); >> list_del(&page->lru); >> if (!add_to_page_cache(page, >> mapping, >> diff --git a/mm/swap.c b/mm/swap.c >> index aa483719922e..20b9e9d99652 100644 >> --- a/mm/swap.c >> +++ b/mm/swap.c >> @@ -126,7 +126,7 @@ void put_pages_list(struct list_head *pages) >> while (!list_empty(pages)) { >> struct page *victim; >> >> - victim = list_entry(pages->prev, struct page, lru); >> + victim = lru_to_page(pages); >> list_del(&victim->lru); >> put_page(victim); >> } >> -- >> 2.17.1 >