diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 32 | ||||
| -rw-r--r-- | mm/page_alloc.c | 2 | ||||
| -rw-r--r-- | mm/shmem.c | 3 | ||||
| -rw-r--r-- | mm/slab.c | 2 | ||||
| -rw-r--r-- | mm/vmscan.c | 2 |
5 files changed, 38 insertions, 3 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 3ef20739e725..fd57442186cb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -697,6 +697,38 @@ unsigned find_get_pages(struct address_space *mapping, pgoff_t start, return ret; } +/** + * find_get_pages_contig - gang contiguous pagecache lookup + * @mapping: The address_space to search + * @index: The starting page index + * @nr_pages: The maximum number of pages + * @pages: Where the resulting pages are placed + * + * find_get_pages_contig() works exactly like find_get_pages(), except + * that the returned number of pages are guaranteed to be contiguous. + * + * find_get_pages_contig() returns the number of pages which were found. + */ +unsigned find_get_pages_contig(struct address_space *mapping, pgoff_t index, + unsigned int nr_pages, struct page **pages) +{ + unsigned int i; + unsigned int ret; + + read_lock_irq(&mapping->tree_lock); + ret = radix_tree_gang_lookup(&mapping->page_tree, + (void **)pages, index, nr_pages); + for (i = 0; i < ret; i++) { + if (pages[i]->mapping == NULL || pages[i]->index != index) + break; + + page_cache_get(pages[i]); + index++; + } + read_unlock_irq(&mapping->tree_lock); + return i; +} + /* * Like find_get_pages, except we only return pages which are tagged with * `tag'. We update *index to index the next page for the traversal. diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 123c60586740..ea77c999047e 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1962,7 +1962,7 @@ static inline void free_zone_pagesets(int cpu) } } -static int __cpuinit pageset_cpuup_callback(struct notifier_block *nfb, +static int pageset_cpuup_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { diff --git a/mm/shmem.c b/mm/shmem.c index 37eaf42ed2c6..4c5e68e4e9ae 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -46,6 +46,8 @@ #include <linux/mempolicy.h> #include <linux/namei.h> #include <linux/ctype.h> +#include <linux/migrate.h> + #include <asm/uaccess.h> #include <asm/div64.h> #include <asm/pgtable.h> @@ -2173,6 +2175,7 @@ static struct address_space_operations shmem_aops = { .prepare_write = shmem_prepare_write, .commit_write = simple_commit_write, #endif + .migratepage = migrate_page, }; static struct file_operations shmem_file_operations = { diff --git a/mm/slab.c b/mm/slab.c index e6ef9bd52335..af5c5237e11a 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1036,7 +1036,7 @@ static inline void free_alien_cache(struct array_cache **ac_ptr) #endif -static int __devinit cpuup_callback(struct notifier_block *nfb, +static int cpuup_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { long cpu = (long)hcpu; diff --git a/mm/vmscan.c b/mm/vmscan.c index acdf001d6941..4649a63a8cb6 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1328,7 +1328,7 @@ repeat: not required for correctness. So if the last cpu in a node goes away, we get changed to run anywhere: as the first one comes back, restore their cpu bindings. */ -static int __devinit cpu_callback(struct notifier_block *nfb, +static int cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu) { pg_data_t *pgdat; |