From b50f7b268bad8088dfe7579a65cd910d8cc5c40f Mon Sep 17 00:00:00 2001 From: David Gstir Date: Sun, 13 Nov 2016 22:20:45 +0100 Subject: fscrypt: Allow fscrypt_decrypt_page() to function with non-writeback pages Some filesystem might pass pages which do not have page->mapping->host set to the encrypted inode. We want the caller to explicitly pass the corresponding inode. Signed-off-by: David Gstir Signed-off-by: Richard Weinberger Signed-off-by: Theodore Ts'o --- fs/ext4/inode.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/ext4') diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 9c064727ed62..4b7b842ec024 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1166,7 +1166,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len, if (unlikely(err)) page_zero_new_buffers(page, from, to); else if (decrypt) - err = fscrypt_decrypt_page(page); + err = fscrypt_decrypt_page(page->mapping->host, page); return err; } #endif @@ -3743,7 +3743,8 @@ static int __ext4_block_zero_page_range(handle_t *handle, /* We expect the key to be set. */ BUG_ON(!fscrypt_has_encryption_key(inode)); BUG_ON(blocksize != PAGE_SIZE); - WARN_ON_ONCE(fscrypt_decrypt_page(page)); + WARN_ON_ONCE(fscrypt_decrypt_page(page->mapping->host, + page)); } } if (ext4_should_journal_data(inode)) { -- cgit v1.2.3