diff options
Diffstat (limited to 'fs/reiserfs/file.c')
| -rw-r--r-- | fs/reiserfs/file.c | 39 |
1 files changed, 11 insertions, 28 deletions
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index ab45db529c8..9e451a68580 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -1059,20 +1059,12 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode maping blocks, since there is none, so we just zero out remaining parts of first and last pages in write area (if needed) */ if ((pos & ~((loff_t) PAGE_CACHE_SIZE - 1)) > inode->i_size) { - if (from != 0) { /* First page needs to be partially zeroed */ - char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0); - memset(kaddr, 0, from); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[0]); - } - if (to != PAGE_CACHE_SIZE) { /* Last page needs to be partially zeroed */ - char *kaddr = - kmap_atomic(prepared_pages[num_pages - 1], - KM_USER0); - memset(kaddr + to, 0, PAGE_CACHE_SIZE - to); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[num_pages - 1]); - } + if (from != 0) /* First page needs to be partially zeroed */ + zero_user_page(prepared_pages[0], 0, from, KM_USER0); + + if (to != PAGE_CACHE_SIZE) /* Last page needs to be partially zeroed */ + zero_user_page(prepared_pages[num_pages-1], to, + PAGE_CACHE_SIZE - to, KM_USER0); /* Since all blocks are new - use already calculated value */ return blocks; @@ -1199,13 +1191,9 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode ll_rw_block(READ, 1, &bh); *wait_bh++ = bh; } else { /* Not mapped, zero it */ - char *kaddr = - kmap_atomic(prepared_pages[0], - KM_USER0); - memset(kaddr + block_start, 0, - from - block_start); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[0]); + zero_user_page(prepared_pages[0], + block_start, + from - block_start, KM_USER0); set_buffer_uptodate(bh); } } @@ -1237,13 +1225,8 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode ll_rw_block(READ, 1, &bh); *wait_bh++ = bh; } else { /* Not mapped, zero it */ - char *kaddr = - kmap_atomic(prepared_pages - [num_pages - 1], - KM_USER0); - memset(kaddr + to, 0, block_end - to); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[num_pages - 1]); + zero_user_page(prepared_pages[num_pages-1], + to, block_end - to, KM_USER0); set_buffer_uptodate(bh); } } |