ext4: Fix ext4_should_journal_data() for EA inodes

mainline inclusion
from mainline-5.5-rc1
commit 321238fb
category: bugfix
bugzilla: 25031
CVE: NA
---------------------------

Similarly to directories, EA inodes do only journalled modifications to
their data. Change ext4_should_journal_data() to return true for them so
that we don't have to special-case them during truncate.
Signed-off-by: NJan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20191105164437.32602-7-jack@suse.czSigned-off-by: NTheodore Ts'o <tytso@mit.edu>
Signed-off-by: Nzhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: NYang Erkun <yangerkun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

fs/ext4/ext4_jbd2.h

@@ -407,6 +407,7 @@ static inline int ext4_inode_journal_mode(struct inode *inode)
 		return EXT4_INODE_WRITEBACK_DATA_MODE;	/* writeback */
 	/* We do not support data journalling with delayed allocation */
 	if (!S_ISREG(inode->i_mode) ||
+	    ext4_test_inode_flag(inode, EXT4_INODE_EA_INODE) ||
 	    test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA ||
 	    (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) &&
 	    !test_opt(inode->i_sb, DELALLOC))) {