diff options
author | Robert Richter <robert.richter@amd.com> | 2010-04-23 14:30:22 +0200 |
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committer | Robert Richter <robert.richter@amd.com> | 2010-04-23 14:30:22 +0200 |
commit | a36bf32e9e8a86f291f746b7f8292e042ee04a46 (patch) | |
tree | c5c999baa4c214218e3adea9b336cbd9f23950ad /mm/migrate.c | |
parent | bc078e4eab65f11bbaeed380593ab8151b30d703 (diff) | |
parent | 01bf0b64579ead8a82e7cfc32ae44bc667e7ad0f (diff) |
Merge commit 'v2.6.34-rc5' into oprofile/core
Diffstat (limited to 'mm/migrate.c')
-rw-r--r-- | mm/migrate.c | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 9a0db5bbabe4..d3f3f7f81075 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -32,6 +32,7 @@ #include <linux/security.h> #include <linux/memcontrol.h> #include <linux/syscalls.h> +#include <linux/gfp.h> #include "internal.h" @@ -134,7 +135,7 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma, page_add_file_rmap(new); /* No need to invalidate - it was non-present before */ - update_mmu_cache(vma, addr, pte); + update_mmu_cache(vma, addr, ptep); unlock: pte_unmap_unlock(ptep, ptl); out: @@ -275,8 +276,6 @@ static int migrate_page_move_mapping(struct address_space *mapping, */ static void migrate_page_copy(struct page *newpage, struct page *page) { - int anon; - copy_highpage(newpage, page); if (PageError(page)) @@ -313,8 +312,6 @@ static void migrate_page_copy(struct page *newpage, struct page *page) ClearPageSwapCache(page); ClearPagePrivate(page); set_page_private(page, 0); - /* page->mapping contains a flag for PageAnon() */ - anon = PageAnon(page); page->mapping = NULL; /* @@ -1002,33 +999,27 @@ static int do_pages_stat(struct mm_struct *mm, unsigned long nr_pages, #define DO_PAGES_STAT_CHUNK_NR 16 const void __user *chunk_pages[DO_PAGES_STAT_CHUNK_NR]; int chunk_status[DO_PAGES_STAT_CHUNK_NR]; - unsigned long i, chunk_nr = DO_PAGES_STAT_CHUNK_NR; - int err; - for (i = 0; i < nr_pages; i += chunk_nr) { - if (chunk_nr > nr_pages - i) - chunk_nr = nr_pages - i; + while (nr_pages) { + unsigned long chunk_nr; - err = copy_from_user(chunk_pages, &pages[i], - chunk_nr * sizeof(*chunk_pages)); - if (err) { - err = -EFAULT; - goto out; - } + chunk_nr = nr_pages; + if (chunk_nr > DO_PAGES_STAT_CHUNK_NR) + chunk_nr = DO_PAGES_STAT_CHUNK_NR; + + if (copy_from_user(chunk_pages, pages, chunk_nr * sizeof(*chunk_pages))) + break; do_pages_stat_array(mm, chunk_nr, chunk_pages, chunk_status); - err = copy_to_user(&status[i], chunk_status, - chunk_nr * sizeof(*chunk_status)); - if (err) { - err = -EFAULT; - goto out; - } - } - err = 0; + if (copy_to_user(status, chunk_status, chunk_nr * sizeof(*status))) + break; -out: - return err; + pages += chunk_nr; + status += chunk_nr; + nr_pages -= chunk_nr; + } + return nr_pages ? -EFAULT : 0; } /* |