diff options
Diffstat (limited to 'fs/afs/file.c')
-rw-r--r-- | fs/afs/file.c | 64 |
1 files changed, 37 insertions, 27 deletions
diff --git a/fs/afs/file.c b/fs/afs/file.c index 0df9bc2..14d89fa 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -121,34 +121,19 @@ static void afs_file_readpage_read_complete(struct page *page, #endif /* - * AFS read page from file, directory or symlink + * read page from file, directory or symlink, given a key to use */ -static int afs_readpage(struct file *file, struct page *page) +int afs_page_filler(void *data, struct page *page) { - struct afs_vnode *vnode; - struct inode *inode; - struct key *key; + struct inode *inode = page->mapping->host; + struct afs_vnode *vnode = AFS_FS_I(inode); + struct key *key = data; size_t len; off_t offset; int ret; - inode = page->mapping->host; - - if (file) { - key = file->private_data; - ASSERT(key != NULL); - } else { - key = afs_request_key(AFS_FS_S(inode->i_sb)->volume->cell); - if (IS_ERR(key)) { - ret = PTR_ERR(key); - goto error_nokey; - } - } - _enter("{%x},{%lu},{%lu}", key_serial(key), inode->i_ino, page->index); - vnode = AFS_FS_I(inode); - BUG_ON(!PageLocked(page)); ret = -ESTALE; @@ -214,31 +199,56 @@ static int afs_readpage(struct file *file, struct page *page) unlock_page(page); } - if (!file) - key_put(key); _leave(" = 0"); return 0; error: SetPageError(page); unlock_page(page); - if (!file) - key_put(key); -error_nokey: _leave(" = %d", ret); return ret; } /* + * read page from file, directory or symlink, given a file to nominate the key + * to be used + */ +static int afs_readpage(struct file *file, struct page *page) +{ + struct key *key; + int ret; + + if (file) { + key = file->private_data; + ASSERT(key != NULL); + ret = afs_page_filler(key, page); + } else { + struct inode *inode = page->mapping->host; + key = afs_request_key(AFS_FS_S(inode->i_sb)->volume->cell); + if (IS_ERR(key)) { + ret = PTR_ERR(key); + } else { + ret = afs_page_filler(key, page); + key_put(key); + } + } + return ret; +} + +/* * read a set of pages */ static int afs_readpages(struct file *file, struct address_space *mapping, struct list_head *pages, unsigned nr_pages) { + struct key *key = file->private_data; struct afs_vnode *vnode; int ret = 0; - _enter(",{%lu},,%d", mapping->host->i_ino, nr_pages); + _enter("{%d},{%lu},,%d", + key_serial(key), mapping->host->i_ino, nr_pages); + + ASSERT(key != NULL); vnode = AFS_FS_I(mapping->host); if (vnode->flags & AFS_VNODE_DELETED) { @@ -279,7 +289,7 @@ static int afs_readpages(struct file *file, struct address_space *mapping, } /* load the missing pages from the network */ - ret = read_cache_pages(mapping, pages, (void *) afs_readpage, file); + ret = read_cache_pages(mapping, pages, afs_page_filler, key); _leave(" = %d [netting]", ret); return ret; |