diff options
Diffstat (limited to 'mm/madvise.c')
| -rw-r--r-- | mm/madvise.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index a01147359f3b..93fb63e88b5e 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -170,7 +170,7 @@ static int swapin_walk_pmd_entry(pmd_t *pmd, unsigned long start, page = read_swap_cache_async(entry, GFP_HIGHUSER_MOVABLE, vma, index); if (page) - page_cache_release(page); + put_page(page); } return 0; @@ -204,14 +204,14 @@ static void force_shm_swapin_readahead(struct vm_area_struct *vma, page = find_get_entry(mapping, index); if (!radix_tree_exceptional_entry(page)) { if (page) - page_cache_release(page); + put_page(page); continue; } swap = radix_to_swp_entry(page); page = read_swap_cache_async(swap, GFP_HIGHUSER_MOVABLE, NULL, 0); if (page) - page_cache_release(page); + put_page(page); } lru_add_drain(); /* Push any new pages onto the LRU now */ @@ -707,10 +707,12 @@ SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior) return error; write = madvise_need_mmap_write(behavior); - if (write) - down_write(¤t->mm->mmap_sem); - else + if (write) { + if (down_write_killable(¤t->mm->mmap_sem)) + return -EINTR; + } else { down_read(¤t->mm->mmap_sem); + } /* * If the interval [start,end) covers some unmapped address |
