Message ID | 20221231214610.2800682-9-willy@infradead.org (mailing list archive) |
---|---|
State | New |
Headers | show |
Series | Get rid of first tail page fields | expand |
Hi Matthew,
I love your patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[also build test WARNING on v6.2-rc1]
[cannot apply to akpm-mm/mm-everything next-20221226]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/mm-Remove-folio_pincount_ptr-and-head_compound_pincount/20230101-054709
patch link: https://lore.kernel.org/r/20221231214610.2800682-9-willy%40infradead.org
patch subject: [PATCH 08/22] mm: Add folio_add_new_anon_rmap()
config: powerpc-allnoconfig
compiler: powerpc-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/0cc724aed3b147aba93541bbf32dba2844155330
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Matthew-Wilcox-Oracle/mm-Remove-folio_pincount_ptr-and-head_compound_pincount/20230101-054709
git checkout 0cc724aed3b147aba93541bbf32dba2844155330
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
mm/rmap.c:1292: warning: Function parameter or member 'folio' not described in 'folio_add_new_anon_rmap'
>> mm/rmap.c:1292: warning: expecting prototype for page_add_new_anon_rmap(). Prototype was for folio_add_new_anon_rmap() instead
vim +1292 mm/rmap.c
^1da177e4c3f41 Linus Torvalds 2005-04-16 1276
43d8eac44f28d3 Randy Dunlap 2008-03-19 1277 /**
40f2bbf71161fa David Hildenbrand 2022-05-09 1278 * page_add_new_anon_rmap - add mapping to a new anonymous page
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1279 * @page: the page to add the mapping to
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1280 * @vma: the vm area in which the mapping is added
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1281 * @address: the user virtual address mapped
40f2bbf71161fa David Hildenbrand 2022-05-09 1282 *
40f2bbf71161fa David Hildenbrand 2022-05-09 1283 * If it's a compound page, it is accounted as a compound page. As the page
40f2bbf71161fa David Hildenbrand 2022-05-09 1284 * is new, it's assume to get mapped exclusively by a single process.
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1285 *
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1286 * Same as page_add_anon_rmap but must only be called on *new* pages.
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1287 * This means the inc-and-test can be bypassed.
c97a9e10eaee32 Nicholas Piggin 2007-05-16 1288 * Page does not have to be locked.
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1289 */
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1290) void folio_add_new_anon_rmap(struct folio *folio, struct vm_area_struct *vma,
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1291) unsigned long address)
9617d95e6e9ffd Nicholas Piggin 2006-01-06 @1292 {
d8dd5e979d09c7 Hugh Dickins 2022-11-09 1293 int nr;
d281ee61451835 Kirill A. Shutemov 2016-01-15 1294
81d1b09c6be66a Sasha Levin 2014-10-09 1295 VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma);
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1296) __folio_set_swapbacked(folio);
d8dd5e979d09c7 Hugh Dickins 2022-11-09 1297
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1298) if (likely(!folio_test_large(folio))) {
d8dd5e979d09c7 Hugh Dickins 2022-11-09 1299 /* increment count (starts at -1) */
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1300) atomic_set(&folio->_mapcount, 0);
d8dd5e979d09c7 Hugh Dickins 2022-11-09 1301 nr = 1;
d8dd5e979d09c7 Hugh Dickins 2022-11-09 1302 } else {
53f9263baba69f Kirill A. Shutemov 2016-01-15 1303 /* increment count (starts at -1) */
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1304) atomic_set(&folio->_entire_mapcount, 0);
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1305) atomic_set(&folio->_nr_pages_mapped, COMPOUND_MAPPED);
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1306) nr = folio_nr_pages(folio);
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1307) __lruvec_stat_mod_folio(folio, NR_ANON_THPS, nr);
d281ee61451835 Kirill A. Shutemov 2016-01-15 1308 }
d8dd5e979d09c7 Hugh Dickins 2022-11-09 1309
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1310) __lruvec_stat_mod_folio(folio, NR_ANON_MAPPED, nr);
0cc724aed3b147 Matthew Wilcox (Oracle 2022-12-31 1311) __page_set_anon_rmap(&folio->page, vma, address, 1);
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1312 }
9617d95e6e9ffd Nicholas Piggin 2006-01-06 1313
Hi Matthew, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v6.2-rc1] [cannot apply to akpm-mm/mm-everything next-20221226] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/mm-Remove-folio_pincount_ptr-and-head_compound_pincount/20230101-054709 patch link: https://lore.kernel.org/r/20221231214610.2800682-9-willy%40infradead.org patch subject: [PATCH 08/22] mm: Add folio_add_new_anon_rmap() config: m68k-randconfig-r034-20230101 compiler: m68k-linux-gcc (GCC) 12.1.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/0cc724aed3b147aba93541bbf32dba2844155330 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Matthew-Wilcox-Oracle/mm-Remove-folio_pincount_ptr-and-head_compound_pincount/20230101-054709 git checkout 0cc724aed3b147aba93541bbf32dba2844155330 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@intel.com> All error/warnings (new ones prefixed by >>): >> mm/folio-compat.c:127:6: warning: no previous prototype for 'page_add_new_anon_rmap' [-Wmissing-prototypes] 127 | void page_add_new_anon_rmap(struct page *page, struct vm_area_struct *vma, | ^~~~~~~~~~~~~~~~~~~~~~ mm/folio-compat.c: In function 'page_add_new_anon_rmap': >> mm/folio-compat.c:132:16: error: implicit declaration of function 'folio_add_new_anon_rmap'; did you mean 'page_add_new_anon_rmap'? [-Werror=implicit-function-declaration] 132 | return folio_add_new_anon_rmap((struct folio *)page, vma, address); | ^~~~~~~~~~~~~~~~~~~~~~~ | page_add_new_anon_rmap mm/folio-compat.c:132:16: error: 'return' with a value, in function returning void [-Werror=return-type] 132 | return folio_add_new_anon_rmap((struct folio *)page, vma, address); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/folio-compat.c:127:6: note: declared here 127 | void page_add_new_anon_rmap(struct page *page, struct vm_area_struct *vma, | ^~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +132 mm/folio-compat.c 126 > 127 void page_add_new_anon_rmap(struct page *page, struct vm_area_struct *vma, 128 unsigned long address) 129 { 130 VM_BUG_ON_PAGE(PageTail(page), page); 131 > 132 return folio_add_new_anon_rmap((struct folio *)page, vma, address);
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index bd3504d11b15..aa682a2a93ce 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -194,6 +194,8 @@ void page_add_anon_rmap(struct page *, struct vm_area_struct *, unsigned long address, rmap_t flags); void page_add_new_anon_rmap(struct page *, struct vm_area_struct *, unsigned long address); +void folio_add_new_anon_rmap(struct folio *, struct vm_area_struct *, + unsigned long address); void page_add_file_rmap(struct page *, struct vm_area_struct *, bool compound); void page_remove_rmap(struct page *, struct vm_area_struct *, diff --git a/mm/folio-compat.c b/mm/folio-compat.c index 69ed25790c68..92f53adc0dd9 100644 --- a/mm/folio-compat.c +++ b/mm/folio-compat.c @@ -123,3 +123,11 @@ void putback_lru_page(struct page *page) { folio_putback_lru(page_folio(page)); } + +void page_add_new_anon_rmap(struct page *page, struct vm_area_struct *vma, + unsigned long address) +{ + VM_BUG_ON_PAGE(PageTail(page), page); + + return folio_add_new_anon_rmap((struct folio *)page, vma, address); +} diff --git a/mm/rmap.c b/mm/rmap.c index 71fbe4a65b93..3297b88b5698 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1287,29 +1287,28 @@ void page_add_anon_rmap(struct page *page, struct vm_area_struct *vma, * This means the inc-and-test can be bypassed. * Page does not have to be locked. */ -void page_add_new_anon_rmap(struct page *page, - struct vm_area_struct *vma, unsigned long address) +void folio_add_new_anon_rmap(struct folio *folio, struct vm_area_struct *vma, + unsigned long address) { int nr; VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma); - __SetPageSwapBacked(page); + __folio_set_swapbacked(folio); - if (likely(!PageCompound(page))) { + if (likely(!folio_test_large(folio))) { /* increment count (starts at -1) */ - atomic_set(&page->_mapcount, 0); + atomic_set(&folio->_mapcount, 0); nr = 1; } else { - VM_BUG_ON_PAGE(!PageTransHuge(page), page); /* increment count (starts at -1) */ - atomic_set(compound_mapcount_ptr(page), 0); - atomic_set(subpages_mapcount_ptr(page), COMPOUND_MAPPED); - nr = thp_nr_pages(page); - __mod_lruvec_page_state(page, NR_ANON_THPS, nr); + atomic_set(&folio->_entire_mapcount, 0); + atomic_set(&folio->_nr_pages_mapped, COMPOUND_MAPPED); + nr = folio_nr_pages(folio); + __lruvec_stat_mod_folio(folio, NR_ANON_THPS, nr); } - __mod_lruvec_page_state(page, NR_ANON_MAPPED, nr); - __page_set_anon_rmap(page, vma, address, 1); + __lruvec_stat_mod_folio(folio, NR_ANON_MAPPED, nr); + __page_set_anon_rmap(&folio->page, vma, address, 1); } /**
In contrast to other rmap functions, page_add_new_anon_rmap() is always called with a freshly allocated page. That means it can't be called with a tail page. Turn page_add_new_anon_rmap() into folio_add_new_anon_rmap() and add a page_add_new_anon_rmap() wrapper. Callers can be converted individually. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- include/linux/rmap.h | 2 ++ mm/folio-compat.c | 8 ++++++++ mm/rmap.c | 23 +++++++++++------------ 3 files changed, 21 insertions(+), 12 deletions(-)