From 2d859db3e4a82a365572592d57624a5f996ed0ec Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 26 Jul 2011 09:07:11 -0400 Subject: [PATCH] ext4: fix data corruption in inodes with journalled data When journalling data for an inode (either because it is a symlink or because the filesystem is mounted in data=journal mode), ext4_evict_inode() can discard unwritten data by calling truncate_inode_pages(). This is because we don't mark the buffer / page dirty when journalling data but only add the buffer to the running transaction and thus mm does not know there are still unwritten data. Fix the problem by carefully tracking transaction containing inode's data, committing this transaction, and writing uncheckpointed buffers when inode should be reaped. Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" --- Reading git-format-patch failed