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authorOGAWA Hirofumi <hirofumi@mail.parknet.co.jp>2006-10-19 23:29:11 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-20 10:26:44 -0700
commit3e2a532b26b491706bd8b5c7cfc8d767b43b8f36 (patch)
tree641db5da4c1adbeee04ce6594746cec51f581ff0
parent82591e6ea234762eeaa8b2337fe060ed438c18dc (diff)
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[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>
-rw-r--r--fs/jbd/transaction.c5
-rw-r--r--fs/jbd2/transaction.c5
2 files changed, 6 insertions, 4 deletions
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index e1b3c8a..d5c6304 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -1314,13 +1314,14 @@ int journal_stop(handle_t *handle)
int old_handle_count, err;
pid_t pid;
- J_ASSERT(transaction->t_updates > 0);
J_ASSERT(journal_current_handle() == handle);
if (is_handle_aborted(handle))
err = -EIO;
- else
+ else {
+ J_ASSERT(transaction->t_updates > 0);
err = 0;
+ }
if (--handle->h_ref > 0) {
jbd_debug(4, "h_ref %d -> %d\n", handle->h_ref + 1,
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 149957b..b6cf2be 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1314,13 +1314,14 @@ int jbd2_journal_stop(handle_t *handle)
int old_handle_count, err;
pid_t pid;
- J_ASSERT(transaction->t_updates > 0);
J_ASSERT(journal_current_handle() == handle);
if (is_handle_aborted(handle))
err = -EIO;
- else
+ else {
+ J_ASSERT(transaction->t_updates > 0);
err = 0;
+ }
if (--handle->h_ref > 0) {
jbd_debug(4, "h_ref %d -> %d\n", handle->h_ref + 1,