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xfs: remove lsn relevant fields from xfs_trans structure and its users 

The t_lsn is not used anymore and the t_commit_lsn is used as a tmp
storage for the checkpoint sequence number only in the current code.

And the start/commit lsn are tracked as a transaction group tag in
the xfs_cil_ctx instead of a single transaction, so remove them from
the xfs_trans structure and their users to match with the design.

Signed-off-by: Shan Hai <shan.hai@oracle.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:
Shan Hai 2017-06-14 21:35:07 -07:00 committed by Darrick J. Wong
parent 3398a4005f
commit f990fc5ad1
3 changed files with 4 additions and 26 deletions
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7
fs/xfs/xfs_log_cil.c
View File

@ -993,6 +993,7 @@ xfs_log_commit_cil(
{
struct xlog *log = mp->m_log;
struct xfs_cil *cil = log->l_cilp;
xfs_lsn_t xc_commit_lsn;
/*
* Do all necessary memory allocation before we lock the CIL.
@ -1006,9 +1007,9 @@ xfs_log_commit_cil(
xlog_cil_insert_items(log, tp);
tp->t_commit_lsn = cil->xc_ctx->sequence;
xc_commit_lsn = cil->xc_ctx->sequence;
if (commit_lsn)
*commit_lsn = tp->t_commit_lsn;
*commit_lsn = xc_commit_lsn;
xfs_log_done(mp, tp->t_ticket, NULL, regrant);
xfs_trans_unreserve_and_mod_sb(tp);
@ -1024,7 +1025,7 @@ xfs_log_commit_cil(
* the log items. This affects (at least) processing of stale buffers,
* inodes and EFIs.
*/
xfs_trans_free_items(tp, tp->t_commit_lsn, false);
xfs_trans_free_items(tp, xc_commit_lsn, false);
xlog_cil_push_background(log);

19
fs/xfs/xfs_trace.h
View File

@ -1491,25 +1491,6 @@ TRACE_EVENT(xfs_extent_busy_trim,
__entry->tlen)
);
TRACE_EVENT(xfs_trans_commit_lsn,
TP_PROTO(struct xfs_trans *trans),
TP_ARGS(trans),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(struct xfs_trans *, tp)
__field(xfs_lsn_t, lsn)
),
TP_fast_assign(
__entry->dev = trans->t_mountp->m_super->s_dev;
__entry->tp = trans;
__entry->lsn = trans->t_commit_lsn;
),
TP_printk("dev %d:%d trans 0x%p commit_lsn 0x%llx",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->tp,
__entry->lsn)
);
TRACE_EVENT(xfs_agf,
TP_PROTO(struct xfs_mount *mp, struct xfs_agf *agf, int flags,
unsigned long caller_ip),

4
fs/xfs/xfs_trans.h
View File

@ -105,10 +105,6 @@ typedef struct xfs_trans {
unsigned int t_rtx_res; /* # of rt extents resvd */
unsigned int t_rtx_res_used; /* # of resvd rt extents used */
struct xlog_ticket *t_ticket; /* log mgr ticket */
xfs_lsn_t t_lsn; /* log seq num of start of
* transaction. */
xfs_lsn_t t_commit_lsn; /* log seq num of end of
* transaction. */
struct xfs_mount *t_mountp; /* ptr to fs mount struct */
struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
unsigned int t_flags; /* misc flags */