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| H A D | inode.c | diff 2bb8dd401a4f96973d6a9de4218d7f01fbd497ee Thu Mar 10 04:18:32 CST 2022 Jan Kara <jack@suse.cz> ext4: warn when dirtying page w/o buffers in data=journal mode
Recently I've got a report of BUG_ON trigerring during transaction
commit in ext4_journalled_writepage_callback() because we've spotted a
dirty page without buffers. Add WARN_ON_ONCE to
ext4_journalled_set_page_dirty() to catch the problematic condition
earlier where we have better chance of understanding which code path is
creating dirty data without preparing the page properly. Also update the
comment with current information when we are at it.
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220310101832.5645-1-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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