From 23f1fc7ce55fbfb195db8abd5e07eef13700cd0e Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Wed, 12 Oct 2022 20:34:19 +0100 Subject: ext4,f2fs: fix readahead of verity data commit 4fa0e3ff217f775cb58d2d6d51820ec519243fb9 upstream. The recent change of page_cache_ra_unbounded() arguments was buggy in the two callers, causing us to readahead the wrong pages. Move the definition of ractl down to after the index is set correctly. This affected performance on configurations that use fs-verity. Link: https://lkml.kernel.org/r/20221012193419.1453558-1-willy@infradead.org Fixes: 73bb49da50cd ("mm/readahead: make page_cache_ra_unbounded take a readahead_control") Signed-off-by: Matthew Wilcox (Oracle) Reported-by: Jintao Yin Signed-off-by: Andrew Morton Signed-off-by: Eric Biggers Signed-off-by: Greg Kroah-Hartman --- fs/ext4/verity.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/ext4') diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c index 00e3cbde472e..35be8e7ec2a0 100644 --- a/fs/ext4/verity.c +++ b/fs/ext4/verity.c @@ -370,13 +370,14 @@ static struct page *ext4_read_merkle_tree_page(struct inode *inode, pgoff_t index, unsigned long num_ra_pages) { - DEFINE_READAHEAD(ractl, NULL, inode->i_mapping, index); struct page *page; index += ext4_verity_metadata_pos(inode) >> PAGE_SHIFT; page = find_get_page_flags(inode->i_mapping, index, FGP_ACCESSED); if (!page || !PageUptodate(page)) { + DEFINE_READAHEAD(ractl, NULL, inode->i_mapping, index); + if (page) put_page(page); else if (num_ra_pages > 1) -- cgit v1.2.3