diff options
Diffstat (limited to 'fs/hostfs/hostfs_kern.c')
| -rw-r--r-- | fs/hostfs/hostfs_kern.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 4684eb7d48c6..b3ad0bd0312f 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -501,11 +501,16 @@ int hostfs_commit_write(struct file *file, struct page *page, unsigned from, long long start; int err = 0; - start = (long long) (page->index << PAGE_CACHE_SHIFT) + from; + start = (((long long) page->index) << PAGE_CACHE_SHIFT) + from; buffer = kmap(page); err = write_file(FILE_HOSTFS_I(file)->fd, &start, buffer + from, to - from); if(err > 0) err = 0; + + /* Actually, if !err, write_file has added to-from to start, so, despite + * the appearance, we are comparing i_size against the _last_ written + * location, as we should. */ + if(!err && (start > inode->i_size)) inode->i_size = start; @@ -910,10 +915,8 @@ static struct inode_operations hostfs_dir_iops = { int hostfs_link_readpage(struct file *file, struct page *page) { char *buffer, *name; - long long start; int err; - start = page->index << PAGE_CACHE_SHIFT; buffer = kmap(page); name = inode_name(page->mapping->host, 0); if(name == NULL) return(-ENOMEM); |