search for: pagelocked

...++ b/mm/compaction.c > >@@ -81,6 +81,39 @@ static inline bool migrate_async_suitable(int migratetype) > > > > #ifdef CONFIG_COMPACTION > > > >+int PageMovable(struct page *page) > >+{ > >+ struct address_space *mapping; > >+ > >+ VM_BUG_ON_PAGE(!PageLocked(page), page); > >+ if (!__PageMovable(page)) > >+ return 0; > >+ > >+ mapping = page_mapping(page); > >+ if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) > >+ return 1; > >+ > >+ return 0; > >+} > >...

...++ b/mm/compaction.c > >@@ -81,6 +81,39 @@ static inline bool migrate_async_suitable(int migratetype) > > > > #ifdef CONFIG_COMPACTION > > > >+int PageMovable(struct page *page) > >+{ > >+ struct address_space *mapping; > >+ > >+ VM_BUG_ON_PAGE(!PageLocked(page), page); > >+ if (!__PageMovable(page)) > >+ return 0; > >+ > >+ mapping = page_mapping(page); > >+ if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) > >+ return 1; > >+ > >+ return 0; > >+} > >...

...t;? > --- a/mm/compaction.c > +++ b/mm/compaction.c > @@ -81,6 +81,39 @@ static inline bool migrate_async_suitable(int migratetype) > > #ifdef CONFIG_COMPACTION > > +int PageMovable(struct page *page) > +{ > + struct address_space *mapping; > + > + VM_BUG_ON_PAGE(!PageLocked(page), page); > + if (!__PageMovable(page)) > + return 0; > + > + mapping = page_mapping(page); > + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) > + return 1; > + > + return 0; > +} > +EXPORT_SYMBOL(PageMovable); > + >...

...df60 100644 > --- a/mm/compaction.c > +++ b/mm/compaction.c > @@ -81,6 +81,41 @@ static inline bool migrate_async_suitable(int migratetype) > > #ifdef CONFIG_COMPACTION > > +int PageMovable(struct page *page) > +{ > + struct address_space *mapping; > + > + WARN_ON(!PageLocked(page)); Why not VM_BUG_ON_PAGE as elsewhere? > + if (!__PageMovable(page)) > + goto out; Just return 0. > + > + mapping = page_mapping(page); > + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) > + return 1; > +out: > + return 0;...

...df60 100644 > --- a/mm/compaction.c > +++ b/mm/compaction.c > @@ -81,6 +81,41 @@ static inline bool migrate_async_suitable(int migratetype) > > #ifdef CONFIG_COMPACTION > > +int PageMovable(struct page *page) > +{ > + struct address_space *mapping; > + > + WARN_ON(!PageLocked(page)); Why not VM_BUG_ON_PAGE as elsewhere? > + if (!__PageMovable(page)) > + goto out; Just return 0. > + > + mapping = page_mapping(page); > + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) > + return 1; > +out: > + return 0;...

Hi Minchan, [auto build test WARNING on next-20160318] [cannot apply to v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160321-143339 coccinelle warnings: (new ones prefixed by >>) >>

Hi Minchan, [auto build test WARNING on next-20160318] [cannot apply to v4.5-rc7 v4.5-rc6 v4.5-rc5 v4.5] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160321-143339 coccinelle warnings: (new ones prefixed by >>) >>

...mm/compaction.c index 1427366ad673..c7e0cd4dda9d 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -81,6 +81,39 @@ static inline bool migrate_async_suitable(int migratetype) #ifdef CONFIG_COMPACTION +int PageMovable(struct page *page) +{ + struct address_space *mapping; + + VM_BUG_ON_PAGE(!PageLocked(page), page); + if (!__PageMovable(page)) + return 0; + + mapping = page_mapping(page); + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) + return 1; + + return 0; +} +EXPORT_SYMBOL(PageMovable); + +void __SetPageMovable(struct page *page, struct address_sp...

...mm/compaction.c index 1427366ad673..c7e0cd4dda9d 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -81,6 +81,39 @@ static inline bool migrate_async_suitable(int migratetype) #ifdef CONFIG_COMPACTION +int PageMovable(struct page *page) +{ + struct address_space *mapping; + + VM_BUG_ON_PAGE(!PageLocked(page), page); + if (!__PageMovable(page)) + return 0; + + mapping = page_mapping(page); + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) + return 1; + + return 0; +} +EXPORT_SYMBOL(PageMovable); + +void __SetPageMovable(struct page *page, struct address_sp...

...; >+++ b/mm/compaction.c > >@@ -81,6 +81,41 @@ static inline bool migrate_async_suitable(int migratetype) > > > > #ifdef CONFIG_COMPACTION > > > >+int PageMovable(struct page *page) > >+{ > >+ struct address_space *mapping; > >+ > >+ WARN_ON(!PageLocked(page)); > > Why not VM_BUG_ON_PAGE as elsewhere? I have backported this patchset to huge old kernel which doesn't have VM_BUG_ON_PAGE and forgot to correct it beforre sending mainline. Thanks. > > >+ if (!__PageMovable(page)) > >+ goto out; > > Just return 0....

...inux/module.h> #include <linux/spinlock.h> #include <linux/buffer_head.h> +#include <linux/swap.h> #include "internal.h" @@ -32,7 +33,8 @@ static inline int __page_discardable(str */ if (PageDirty(page) || PageReserved(page) || PageWriteback(page) || PageLocked(page) || PagePrivate(page) || PageDiscarded(page) || - !PageUptodate(page) || !PageLRU(page) || PageAnon(page)) + !PageUptodate(page) || !PageLRU(page) || + (PageAnon(page) && !PageSwapCache(page))) return 0; /* @@ -149,15 +151,21 @@ static void __page_discard(struct page...

...inux/module.h> #include <linux/spinlock.h> #include <linux/buffer_head.h> +#include <linux/swap.h> #include "internal.h" @@ -32,7 +33,8 @@ static inline int __page_discardable(str */ if (PageDirty(page) || PageReserved(page) || PageWriteback(page) || PageLocked(page) || PagePrivate(page) || PageDiscarded(page) || - !PageUptodate(page) || !PageLRU(page) || PageAnon(page)) + !PageUptodate(page) || !PageLRU(page) || + (PageAnon(page) && !PageSwapCache(page))) return 0; /* @@ -149,15 +151,21 @@ static void __page_discard(struct page...

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and easy fork fail. The problem was fragmentation caused by zram and GPU driver mainly. With memory pressure, their pages were spread out all of pageblock and it cannot be migrated with current compaction algorithm which supports only LRU pages. In the end, compaction cannot

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and easy fork fail. The problem was fragmentation caused by zram and GPU driver mainly. With memory pressure, their pages were spread out all of pageblock and it cannot be migrated with current compaction algorithm which supports only LRU pages. In the end, compaction cannot

...->kpfn); page = pfn_to_page(kpfn); diff --git a/mm/migrate.c b/mm/migrate.c index f2932498ded2..24205e1f9204 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -47,6 +47,38 @@ #include "internal.h" +int PageMovable(struct page *page) +{ + struct address_space *mapping; + + WARN_ON(!PageLocked(page)); + if (!__PageMovable(page)) + goto out; + + mapping = page_mapping(page); + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) + return 1; +out: + return 0; +} + +void __SetPageMovable(struct page *page, struct address_space *mapping) +{ + VM_BUG_ON_PA...

...on.c b/mm/compaction.c index 1427366ad673..2d6862d0df60 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -81,6 +81,41 @@ static inline bool migrate_async_suitable(int migratetype) #ifdef CONFIG_COMPACTION +int PageMovable(struct page *page) +{ + struct address_space *mapping; + + WARN_ON(!PageLocked(page)); + if (!__PageMovable(page)) + goto out; + + mapping = page_mapping(page); + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) + return 1; +out: + return 0; +} +EXPORT_SYMBOL(PageMovable); + +void __SetPageMovable(struct page *page, struct address_spac...

...mm/compaction.c index 1427366ad673..a680b52e190b 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -81,6 +81,44 @@ static inline bool migrate_async_suitable(int migratetype) #ifdef CONFIG_COMPACTION +int PageMovable(struct page *page) +{ + struct address_space *mapping; + + VM_BUG_ON_PAGE(!PageLocked(page), page); + if (!__PageMovable(page)) + return 0; + + mapping = page_mapping(page); + if (mapping && mapping->a_ops && mapping->a_ops->isolate_page) + return 1; + + return 0; +} +EXPORT_SYMBOL(PageMovable); + +void __SetPageMovable(struct page *page, struct address_sp...

...= + get_next_page(cursor)) { + if (cursor != locked_page) + unlock_page(cursor); + } + + return 0; +} + +void unlock_zspage(struct page *first_page, struct page *locked_page) +{ + struct page *cursor = first_page; + + for (; cursor != NULL; cursor = get_next_page(cursor)) { + VM_BUG_ON_PAGE(!PageLocked(cursor), cursor); + if (cursor != locked_page) + unlock_page(cursor); + }; +} + static void free_zspage(struct zs_pool *pool, struct page *first_page) { struct page *nextp, *tmp; @@ -1090,16 +1141,17 @@ static void init_zspage(struct size_class *class, struct page *first_page, first_page-&...

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and easy fork fail. The problem was fragmentation caused by zram and GPU driver mainly. With memory pressure, their pages were spread out all of pageblock and it cannot be migrated with current compaction algorithm which supports only LRU pages. In the end, compaction cannot

Recently, I got many reports about perfermance degradation in embedded system(Android mobile phone, webOS TV and so on) and easy fork fail. The problem was fragmentation caused by zram and GPU driver mainly. With memory pressure, their pages were spread out all of pageblock and it cannot be migrated with current compaction algorithm which supports only LRU pages. In the end, compaction cannot