From: Matthew Wilcox (Oracle) Date: Wed, 12 Oct 2022 19:34:19 +0000 (+0100) Subject: ext4,f2fs: fix readahead of verity data X-Git-Tag: v6.0.8~10 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=96f8666c737b3346b40d12b8679bdee69b19f4c4;p=thirdparty%2Fkernel%2Fstable.git 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 Cc: Eric Biggers Signed-off-by: Greg Kroah-Hartman --- diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c index b051d19b5c8a0..94442c690ca7d 100644 --- a/fs/ext4/verity.c +++ b/fs/ext4/verity.c @@ -365,13 +365,14 @@ static struct page *ext4_read_merkle_tree_page(struct inode *inode, pgoff_t index, unsigned long num_ra_pages) { - DEFINE_READAHEAD(ractl, NULL, 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, NULL, inode->i_mapping, index); + if (page) put_page(page); else if (num_ra_pages > 1) diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c index 7b8f2b41c29b1..c0733f8670746 100644 --- a/fs/f2fs/verity.c +++ b/fs/f2fs/verity.c @@ -262,13 +262,14 @@ static struct page *f2fs_read_merkle_tree_page(struct inode *inode, pgoff_t index, unsigned long num_ra_pages) { - DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, index); struct page *page; index += f2fs_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, NULL, inode->i_mapping, index); + if (page) put_page(page); else if (num_ra_pages > 1)