jbd2: abort instead of waiting for nonexistent transaction
authorDuane Griffin <duaneg@dghda.com>
Thu, 9 Oct 2008 03:28:31 +0000 (23:28 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Thu, 9 Oct 2008 03:28:31 +0000 (23:28 -0400)
commit23f8b79eae8a74e42a006ffa7c456e295c7e1c0d
treeb62700cd7ff65268a50cfd8d8652d220f7c5c9a4
parentc806e68f5647109350ec546fee5b526962970fd2
jbd2: abort instead of waiting for nonexistent transaction

The __jbd2_log_wait_for_space function sits in a loop checkpointing
transactions until there is sufficient space free in the journal.
However, if there are no transactions to be processed (e.g.  because the
free space calculation is wrong due to a corrupted filesystem) it will
never progress.

Check for space being required when no transactions are outstanding and
abort the journal instead of endlessly looping.

This patch fixes the bug reported by Sami Liedes at:
http://bugzilla.kernel.org/show_bug.cgi?id=10976

Signed-off-by: Duane Griffin <duaneg@dghda.com>
Cc: Sami Liedes <sliedes@cc.hut.fi>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
fs/jbd2/checkpoint.c