From c0d92cbc5849f26451f478d538b8d885ae547221 Mon Sep 17 00:00:00 2001 From: Pekka J Enberg Date: Fri, 29 Sep 2006 01:59:09 -0700 Subject: [PATCH] [PATCH] libfs: remove page up-to-date check from simple_readpage Remove the unnecessary PageUptodate check from simple_readpage. The only two callers for ->readpage that don't have explicit PageUptodate check are read_cache_pages and page_cache_read which operate on newly allocated pages which don't have the flag set. [akpm: use the allegedly-faster clear_page(), too] Signed-off-by: Pekka Enberg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/libfs.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/fs/libfs.c b/fs/libfs.c index 8db5afb7b0a7..3793aaa14577 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -317,17 +317,9 @@ int simple_rename(struct inode *old_dir, struct dentry *old_dentry, int simple_readpage(struct file *file, struct page *page) { - void *kaddr; - - if (PageUptodate(page)) - goto out; - - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr, 0, PAGE_CACHE_SIZE); - kunmap_atomic(kaddr, KM_USER0); + clear_highpage(page); flush_dcache_page(page); SetPageUptodate(page); -out: unlock_page(page); return 0; } -- 2.20.1