search for: address_space_operation

...balloon_dev_info *balloon) } #ifdef CONFIG_BALLOON_COMPACTION -extern bool balloon_page_isolate(struct page *page); -extern void balloon_page_putback(struct page *page); -extern int balloon_page_migrate(struct page *newpage, - struct page *page, enum migrate_mode mode); +extern const struct address_space_operations balloon_aops; +extern int balloon_page_isolate(struct page *page); +extern int balloon_page_putback(struct page *page); +extern int balloon_page_migrate(struct address_space *mapping, + struct page *newpage, + struct page *page, + enum migrate_mode mode); + +extern struct address_space +*...

...balloon_dev_info *balloon) } #ifdef CONFIG_BALLOON_COMPACTION -extern bool balloon_page_isolate(struct page *page); -extern void balloon_page_putback(struct page *page); -extern int balloon_page_migrate(struct page *newpage, - struct page *page, enum migrate_mode mode); +extern const struct address_space_operations balloon_aops; +extern int balloon_page_isolate(struct page *page); +extern int balloon_page_putback(struct page *page); +extern int balloon_page_migrate(struct address_space *mapping, + struct page *newpage, + struct page *page, + enum migrate_mode mode); + +extern struct address_space +*...

...alloon->pages_lock); > INIT_LIST_HEAD(&balloon->pages); > balloon->migratepage = NULL; > + balloon->mapping = NULL; > } > > #ifdef CONFIG_BALLOON_COMPACTION > -extern bool balloon_page_isolate(struct page *page); > +extern const struct address_space_operations balloon_aops; > +extern bool balloon_page_isolate(struct page *page, > + isolate_mode_t mode); > extern void balloon_page_putback(struct page *page); > -extern int balloon_page_migrate(struct page *newpage, > +extern int balloon_page_migrate(struct ad...

...alloon->pages_lock); > INIT_LIST_HEAD(&balloon->pages); > balloon->migratepage = NULL; > + balloon->mapping = NULL; > } > > #ifdef CONFIG_BALLOON_COMPACTION > -extern bool balloon_page_isolate(struct page *page); > +extern const struct address_space_operations balloon_aops; > +extern bool balloon_page_isolate(struct page *page, > + isolate_mode_t mode); > extern void balloon_page_putback(struct page *page); > -extern int balloon_page_migrate(struct page *newpage, > +extern int balloon_page_migrate(struct ad...

...virtio_balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index c444654..8c5943d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -369,7 +369,7 @@ static const struct address_space_operations virtio_balloon_aops; * This function preforms the balloon page migration task. * Called through balloon_mapping->a_ops->migratepage */ -int virtballoon_migratepage(struct address_space *mapping, +static int virtballoon_migratepage(struct address_space *mapping, struct page *newpage,...

...virtio_balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index c444654..8c5943d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -369,7 +369,7 @@ static const struct address_space_operations virtio_balloon_aops; * This function preforms the balloon page migration task. * Called through balloon_mapping->a_ops->migratepage */ -int virtballoon_migratepage(struct address_space *mapping, +static int virtballoon_migratepage(struct address_space *mapping, struct page *newpage,...

...I read your question about user-mapped drvier pages so we cannot > use _mapcount anymore so I will find another thing. A option is this. > > static inline int PageMovable(struct page *page) > { > int ret = 0; > struct address_space *mapping; > struct address_space_operations *a_op; > > if (!test_bit(PG_movable, &(page->flags)) > goto out; > > mapping = page->mapping; > if (!mapping) > goto out; > > a_op = mapping->a_op; > if (!aop) >...

...I read your question about user-mapped drvier pages so we cannot > use _mapcount anymore so I will find another thing. A option is this. > > static inline int PageMovable(struct page *page) > { > int ret = 0; > struct address_space *mapping; > struct address_space_operations *a_op; > > if (!test_bit(PG_movable, &(page->flags)) > goto out; > > mapping = page->mapping; > if (!mapping) > goto out; > > a_op = mapping->a_op; > if (!aop) >...

...> #ifdef CONFIG_BALLOON_COMPACTION > -extern bool balloon_page_isolate(struct page *page); > -extern void balloon_page_putback(struct page *page); > -extern int balloon_page_migrate(struct page *newpage, > - struct page *page, enum migrate_mode mode); > +extern const struct address_space_operations balloon_aops; > +extern int balloon_page_isolate(struct page *page); > +extern int balloon_page_putback(struct page *page); > +extern int balloon_page_migrate(struct address_space *mapping, > + struct page *newpage, > + struct page *page, > + enum migrate_mode mode); &gt...

...truct balloon_dev_info *balloon) spin_lock_init(&balloon->pages_lock); INIT_LIST_HEAD(&balloon->pages); balloon->migratepage = NULL; + balloon->mapping = NULL; } #ifdef CONFIG_BALLOON_COMPACTION -extern bool balloon_page_isolate(struct page *page); +extern const struct address_space_operations balloon_aops; +extern bool balloon_page_isolate(struct page *page, + isolate_mode_t mode); extern void balloon_page_putback(struct page *page); -extern int balloon_page_migrate(struct page *newpage, +extern int balloon_page_migrate(struct address_space *mapping, + struct page *newpage,...

...INIT_LIST_HEAD(&balloon->pages); >> balloon->migratepage = NULL; >> + balloon->mapping = NULL; >> } >> >> #ifdef CONFIG_BALLOON_COMPACTION >> -extern bool balloon_page_isolate(struct page *page); >> +extern const struct address_space_operations balloon_aops; >> +extern bool balloon_page_isolate(struct page *page, >> + isolate_mode_t mode); >> extern void balloon_page_putback(struct page *page); >> -extern int balloon_page_migrate(struct page *newpage, >> +extern int balloon_p...

When trying to move my root to a btrfs filesystem, I found a missing feature (or a bug). It's not possible to create device files. To reproduce, run this on a btrfs filesystem: mknod test c 1 1 result: mknod: `test': Operation not permitted Frank

...emory, vmalloc and so on) but if there are lots of > non-movable pages in system, their solutions are void in the long run. > > So, this patch is to support facility to change non-movable pages > with movable. For the feature, this patch introduces functions related > to migration to address_space_operations as well as some page flags. > > Basically, this patch supports two page-flags and two functions related > to page migration. The flag and page->mapping stability are protected > by PG_lock. > > PG_movable > PG_isolated > > bool (*isolate_page) (struct page *, isola...

...emory, vmalloc and so on) but if there are lots of > non-movable pages in system, their solutions are void in the long run. > > So, this patch is to support facility to change non-movable pages > with movable. For the feature, this patch introduces functions related > to migration to address_space_operations as well as some page flags. > > Basically, this patch supports two page-flags and two functions related > to page migration. The flag and page->mapping stability are protected > by PG_lock. > > PG_movable > PG_isolated > > bool (*isolate_page) (struct page *, isola...

From: Gioh Kim <gurugio at hanmail.net> Apply mobile page migration into balloon driver. The balloong driver has an anonymous inode that manages address_space_operation for page migration. Signed-off-by: Gioh Kim <gioh.kim at lge.com> --- drivers/virtio/virtio_balloon.c | 3 ++ include/linux/balloon_compaction.h | 15 +++++++-- mm/balloon_compaction.c | 65 +++++++++++++------------------------- mm/compaction.c | 2 +- mm...

...ction, zram and GPU driver cannot work with the kernel compaction. This patch set combines 5 patches. 1. patch 1/5: get inode from anon_inodes This patch adds new interface to create inode from anon_inodes. 2. patch 2/5: framework to isolate/migrate/putback page Add isolatepage, putbackpage into address_space_operations and wrapper function to call them 3. patch 3/5: apply the framework into balloon driver The balloon driver is applied into the framework. It gets a inode from anon_inodes and register operations in the inode. Any other drivers can register operations via inode like this to migrate it's pages....

...ction, zram and GPU driver cannot work with the kernel compaction. This patch set combines 5 patches. 1. patch 1/5: get inode from anon_inodes This patch adds new interface to create inode from anon_inodes. 2. patch 2/5: framework to isolate/migrate/putback page Add isolatepage, putbackpage into address_space_operations and wrapper function to call them 3. patch 3/5: apply the framework into balloon driver The balloon driver is applied into the framework. It gets a inode from anon_inodes and register operations in the inode. Any other drivers can register operations via inode like this to migrate it's pages....

...ng of current non-lru-no-mapped page migration to solve > current real field issues. yeah it makes sense. > > About the overriding problem of non-lru-mapped-page, I implemented dummy > driver as miscellaneous device and in test_mmap(file_operations.mmap), > I changed a_ops with my address_space_operations. > > int test_mmap(struct file *filp, struct vm_area_struct *vma) > { > filp->f_mapping->a_ops = &test_aops; > vma->vm_ops = &test_vm_ops; > vma->vm_private_data = filp->private_data; > return 0; > } > Okay. >...

...ng of current non-lru-no-mapped page migration to solve > current real field issues. yeah it makes sense. > > About the overriding problem of non-lru-mapped-page, I implemented dummy > driver as miscellaneous device and in test_mmap(file_operations.mmap), > I changed a_ops with my address_space_operations. > > int test_mmap(struct file *filp, struct vm_area_struct *vma) > { > filp->f_mapping->a_ops = &test_aops; > vma->vm_ops = &test_vm_ops; > vma->vm_private_data = filp->private_data; > return 0; > } > Okay. >...

...1 deletion(-) > > > > diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c > > index c444654..8c5943d 100644 > > --- a/drivers/virtio/virtio_balloon.c > > +++ b/drivers/virtio/virtio_balloon.c > > @@ -369,7 +369,7 @@ static const struct address_space_operations virtio_balloon_aops; > > * This function preforms the balloon page migration task. > > * Called through balloon_mapping->a_ops->migratepage > > */ > > -int virtballoon_migratepage(struct address_space *mapping, > > +static int virtballoon_migratepage(struc...