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authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>2006-10-20 02:29:11 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-20 13:26:44 -0400
commit3e2a532b26b491706bd8b5c7cfc8d767b43b8f36 (patch)
tree641db5da4c1adbeee04ce6594746cec51f581ff0 /fs/jbd/transaction.c
parent82591e6ea234762eeaa8b2337fe060ed438c18dc (diff)
[PATCH] ext3/4: fix J_ASSERT(transaction->t_updates > 0) in journal_stop()
A disk generated some I/O error, after it, I hitted J_ASSERT(transaction->t_updates > 0) in journal_stop(). It seems to happened on ext3_truncate() path from stack trace. Then, maybe the following case may trigger J_ASSERT(transaction->t_updates > 0). ext3_truncate() -> ext3_free_branches() -> ext3_journal_test_restart() -> ext3_journal_restart() -> journal_restart() transaction->t_updates--; /* another process aborted journal */ -> start_this_handle() returns -EROFS without transaction->t_updates++; -> ext3_journal_stop() -> journal_stop() J_ASSERT(transaction->t_updates > 0) If journal was aborted in middle of journal_restart(), ext3_truncate() may trigger J_ASSERT(). Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/jbd/transaction.c')
-rw-r--r--fs/jbd/transaction.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index e1b3c8af4d17..d5c63047a8b3 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -1314,13 +1314,14 @@ int journal_stop(handle_t *handle)
1314 int old_handle_count, err; 1314 int old_handle_count, err;
1315 pid_t pid; 1315 pid_t pid;
1316 1316
1317 J_ASSERT(transaction->t_updates > 0);
1318 J_ASSERT(journal_current_handle() == handle); 1317 J_ASSERT(journal_current_handle() == handle);
1319 1318
1320 if (is_handle_aborted(handle)) 1319 if (is_handle_aborted(handle))
1321 err = -EIO; 1320 err = -EIO;
1322 else 1321 else {
1322 J_ASSERT(transaction->t_updates > 0);
1323 err = 0; 1323 err = 0;
1324 }
1324 1325
1325 if (--handle->h_ref > 0) { 1326 if (--handle->h_ref > 0) {
1326 jbd_debug(4, "h_ref %d -> %d\n", handle->h_ref + 1, 1327 jbd_debug(4, "h_ref %d -> %d\n", handle->h_ref + 1,