From 6fe6900e1e5b6fa9e5c59aa5061f244fe3f467e2 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Sun, 6 May 2007 14:49:04 -0700 Subject: mm: make read_cache_page synchronous Ensure pages are uptodate after returning from read_cache_page, which allows us to cut out most of the filesystem-internal PageUptodate calls. I didn't have a great look down the call chains, but this appears to fixes 7 possible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in ecryptfs, 1 in jffs2, and a possible cleared data overwritten with readpage in block2mtd. All depending on whether the filler is async and/or can return with a !uptodate page. Signed-off-by: Nick Piggin Cc: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ufs/util.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'fs/ufs/util.c') diff --git a/fs/ufs/util.c b/fs/ufs/util.c index 17437574f79c..84357f1ff0ec 100644 --- a/fs/ufs/util.c +++ b/fs/ufs/util.c @@ -251,13 +251,11 @@ struct page *ufs_get_locked_page(struct address_space *mapping, page = find_lock_page(mapping, index); if (!page) { - page = read_cache_page(mapping, index, - (filler_t*)mapping->a_ops->readpage, - NULL); + page = read_mapping_page(mapping, index, NULL); if (IS_ERR(page)) { printk(KERN_ERR "ufs_change_blocknr: " - "read_cache_page error: ino %lu, index: %lu\n", + "read_mapping_page error: ino %lu, index: %lu\n", mapping->host->i_ino, index); goto out; } -- cgit v1.2.3