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xfs: print transaction log reservation on overrun 

The transaction dump code displays the content and reservation
consumption of a particular transaction in the event of an overrun.
It currently displays the reservation associated with the
transaction ticket, but not the original reservation attached to the
transaction.

The latter value reflects the original transaction reservation
calculation before additional reservation overhead is assigned, such
as for the CIL context header and potential split region headers.

Update xlog_print_trans() to also print the original transaction
reservation in the event of overrun. This provides a reference point
to identify how much reservation overhead was added to a particular
ticket by xfs_log_calc_unit_res().

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Brian Foster 2018-01-08 10:41:35 -08:00 committed by Darrick J. Wong
parent 29c1c123a3
commit 2c8f626539
1 changed files with 3 additions and 1 deletions
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4
fs/xfs/xfs_log.c
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@ -2117,7 +2117,9 @@ xlog_print_trans(
/* dump core transaction and ticket info */
xfs_warn(mp, "transaction summary:");
xfs_warn(mp, " flags = 0x%x", tp->t_flags);
xfs_warn(mp, " log res = %d", tp->t_log_res);
xfs_warn(mp, " log count = %d", tp->t_log_count);
xfs_warn(mp, " flags = 0x%x", tp->t_flags);
xlog_print_tic_res(mp, tp->t_ticket);