diff options
Diffstat (limited to 'net/ceph/pagevec.c')
| -rw-r--r-- | net/ceph/pagevec.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c index ac34feeb2b3a..1a040e64c69f 100644 --- a/net/ceph/pagevec.c +++ b/net/ceph/pagevec.c | |||
| @@ -13,7 +13,7 @@ | |||
| 13 | * build a vector of user pages | 13 | * build a vector of user pages |
| 14 | */ | 14 | */ |
| 15 | struct page **ceph_get_direct_page_vector(const char __user *data, | 15 | struct page **ceph_get_direct_page_vector(const char __user *data, |
| 16 | int num_pages) | 16 | int num_pages, bool write_page) |
| 17 | { | 17 | { |
| 18 | struct page **pages; | 18 | struct page **pages; |
| 19 | int rc; | 19 | int rc; |
| @@ -24,24 +24,27 @@ struct page **ceph_get_direct_page_vector(const char __user *data, | |||
| 24 | 24 | ||
| 25 | down_read(¤t->mm->mmap_sem); | 25 | down_read(¤t->mm->mmap_sem); |
| 26 | rc = get_user_pages(current, current->mm, (unsigned long)data, | 26 | rc = get_user_pages(current, current->mm, (unsigned long)data, |
| 27 | num_pages, 0, 0, pages, NULL); | 27 | num_pages, write_page, 0, pages, NULL); |
| 28 | up_read(¤t->mm->mmap_sem); | 28 | up_read(¤t->mm->mmap_sem); |
| 29 | if (rc < 0) | 29 | if (rc < num_pages) |
| 30 | goto fail; | 30 | goto fail; |
| 31 | return pages; | 31 | return pages; |
| 32 | 32 | ||
| 33 | fail: | 33 | fail: |
| 34 | kfree(pages); | 34 | ceph_put_page_vector(pages, rc > 0 ? rc : 0, false); |
| 35 | return ERR_PTR(rc); | 35 | return ERR_PTR(rc); |
| 36 | } | 36 | } |
| 37 | EXPORT_SYMBOL(ceph_get_direct_page_vector); | 37 | EXPORT_SYMBOL(ceph_get_direct_page_vector); |
| 38 | 38 | ||
| 39 | void ceph_put_page_vector(struct page **pages, int num_pages) | 39 | void ceph_put_page_vector(struct page **pages, int num_pages, bool dirty) |
| 40 | { | 40 | { |
| 41 | int i; | 41 | int i; |
| 42 | 42 | ||
| 43 | for (i = 0; i < num_pages; i++) | 43 | for (i = 0; i < num_pages; i++) { |
| 44 | if (dirty) | ||
| 45 | set_page_dirty_lock(pages[i]); | ||
| 44 | put_page(pages[i]); | 46 | put_page(pages[i]); |
| 47 | } | ||
| 45 | kfree(pages); | 48 | kfree(pages); |
| 46 | } | 49 | } |
| 47 | EXPORT_SYMBOL(ceph_put_page_vector); | 50 | EXPORT_SYMBOL(ceph_put_page_vector); |
