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xfs: clean up xfs_trans_commit logic even more
> +shut_us_down: > + shutdown = XFS_FORCED_SHUTDOWN(mp) ? EIO : 0; > + if (!(tp->t_flags & XFS_TRANS_DIRTY) || shutdown) { > + xfs_trans_unreserve_and_mod_sb(tp); > + /* This whole area in _xfs_trans_commit is still a complete mess. So while touching this code, unravel this mess as well to make the whole flow of the function simpler and clearer. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
parent
0924378a68
commit
a3ccd2ca43
1 changed files with 37 additions and 32 deletions
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@ -1020,19 +1020,17 @@ xfs_trans_commit_iclog(
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* have already been unlocked as if the commit had succeeded.
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* have already been unlocked as if the commit had succeeded.
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* Do not reference the transaction structure after this call.
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* Do not reference the transaction structure after this call.
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*/
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*/
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/*ARGSUSED*/
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int
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int
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_xfs_trans_commit(
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_xfs_trans_commit(
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xfs_trans_t *tp,
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struct xfs_trans *tp,
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uint flags,
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uint flags,
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int *log_flushed)
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int *log_flushed)
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{
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{
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xfs_mount_t *mp = tp->t_mountp;
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struct xfs_mount *mp = tp->t_mountp;
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xfs_lsn_t commit_lsn = -1;
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xfs_lsn_t commit_lsn = -1;
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int error;
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int error = 0;
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int log_flags = 0;
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int log_flags = 0;
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int sync = tp->t_flags & XFS_TRANS_SYNC;
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int sync = tp->t_flags & XFS_TRANS_SYNC;
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int shutdown;
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/*
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/*
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* Determine whether this commit is releasing a permanent
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* Determine whether this commit is releasing a permanent
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@ -1050,30 +1048,14 @@ _xfs_trans_commit(
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* Also make sure to return any reserved blocks to
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* Also make sure to return any reserved blocks to
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* the free pool.
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* the free pool.
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*/
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*/
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shut_us_down:
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if (!(tp->t_flags & XFS_TRANS_DIRTY))
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shutdown = XFS_FORCED_SHUTDOWN(mp) ? EIO : 0;
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goto out_unreserve;
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if (!(tp->t_flags & XFS_TRANS_DIRTY) || shutdown) {
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xfs_trans_unreserve_and_mod_sb(tp);
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if (XFS_FORCED_SHUTDOWN(mp)) {
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/*
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error = XFS_ERROR(EIO);
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* It is indeed possible for the transaction to be
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goto out_unreserve;
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* not dirty but the dqinfo portion to be. All that
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* means is that we have some (non-persistent) quota
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* reservations that need to be unreserved.
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*/
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xfs_trans_unreserve_and_mod_dquots(tp);
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if (tp->t_ticket) {
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commit_lsn = xfs_log_done(mp, tp->t_ticket,
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NULL, log_flags);
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if (commit_lsn == -1 && !shutdown)
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shutdown = XFS_ERROR(EIO);
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}
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current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
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xfs_trans_free_items(tp, shutdown? XFS_TRANS_ABORT : 0);
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xfs_trans_free_busy(tp);
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xfs_trans_free(tp);
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XFS_STATS_INC(xs_trans_empty);
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return (shutdown);
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}
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}
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ASSERT(tp->t_ticket != NULL);
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ASSERT(tp->t_ticket != NULL);
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/*
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/*
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@ -1086,7 +1068,8 @@ _xfs_trans_commit(
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error = xfs_trans_commit_iclog(mp, tp, &commit_lsn, flags);
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error = xfs_trans_commit_iclog(mp, tp, &commit_lsn, flags);
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if (error == ENOMEM) {
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if (error == ENOMEM) {
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xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
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xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR);
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goto shut_us_down;
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error = XFS_ERROR(EIO);
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goto out_unreserve;
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}
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}
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/*
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/*
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@ -1103,7 +1086,29 @@ _xfs_trans_commit(
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XFS_STATS_INC(xs_trans_async);
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XFS_STATS_INC(xs_trans_async);
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}
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}
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return (error);
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return error;
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out_unreserve:
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xfs_trans_unreserve_and_mod_sb(tp);
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/*
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* It is indeed possible for the transaction to be not dirty but
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* the dqinfo portion to be. All that means is that we have some
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* (non-persistent) quota reservations that need to be unreserved.
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*/
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xfs_trans_unreserve_and_mod_dquots(tp);
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if (tp->t_ticket) {
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commit_lsn = xfs_log_done(mp, tp->t_ticket, NULL, log_flags);
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if (commit_lsn == -1 && !error)
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error = XFS_ERROR(EIO);
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}
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current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS);
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xfs_trans_free_items(tp, error ? XFS_TRANS_ABORT : 0);
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xfs_trans_free_busy(tp);
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xfs_trans_free(tp);
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XFS_STATS_INC(xs_trans_empty);
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return error;
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}
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}
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/*
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/*
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