Fixes bugs in number promotion/demotion computation, as per <http://lkml.org/lkml/2007/9/20/17> Signed-off-by: Erez Zadok <ezk@xxxxxxxxxxxxx> Acked-by: Josef 'Jeff' Sipek <jsipek@xxxxxxxxxxxxx> --- fs/unionfs/mmap.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/unionfs/mmap.c b/fs/unionfs/mmap.c index 88ef6a6..37af979 100644 --- a/fs/unionfs/mmap.c +++ b/fs/unionfs/mmap.c @@ -179,7 +179,8 @@ static int unionfs_do_readpage(struct file *file, struct page *page) * may be a little slower, but a lot safer, as the VFS does a lot of * the necessary magic for us. */ - offset = lower_file->f_pos = (page->index << PAGE_CACHE_SHIFT); + offset = lower_file->f_pos = + ((loff_t) page->index << PAGE_CACHE_SHIFT); old_fs = get_fs(); set_fs(KERNEL_DS); err = vfs_read(lower_file, page_data, PAGE_CACHE_SIZE, @@ -289,7 +290,7 @@ static int unionfs_commit_write(struct file *file, struct page *page, BUG_ON(lower_file == NULL); page_data = (char *)kmap(page); - lower_file->f_pos = (page->index << PAGE_CACHE_SHIFT) + from; + lower_file->f_pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + from; /* * SP: I use vfs_write instead of copying page data and the -- 1.5.2.2 - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
