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xfs: remove xlog_state_want_sync

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Open code the xlog_state_want_sync logic in its two callers given that
this function is a trivial wrapper around xlog_state_switch_iclogs.

Move the lockdep assert into xlog_state_switch_iclogs to not lose this
debugging aid, and improve the comment that documents
xlog_state_switch_iclogs as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@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:
Christoph Hellwig 2020-03-20 08:49:21 -07:00 committed by Darrick J. Wong
parent 5781464bd1
commit 693639994b
1 changed files with 18 additions and 32 deletions
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50
fs/xfs/xfs_log.c
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@ -62,11 +62,6 @@ xlog_state_switch_iclogs(
struct xlog_in_core *iclog,
int eventual_size);
STATIC void
xlog_state_want_sync(
struct xlog *log,
struct xlog_in_core *iclog);
STATIC void
xlog_grant_push_ail(
struct xlog *log,
int need_bytes);
@ -938,7 +933,11 @@ out_err:
spin_lock(&log->l_icloglock);
iclog = log->l_iclog;
atomic_inc(&iclog->ic_refcnt);
xlog_state_want_sync(log, iclog);
if (iclog->ic_state == XLOG_STATE_ACTIVE)
xlog_state_switch_iclogs(log, iclog, 0);
else
ASSERT(iclog->ic_state == XLOG_STATE_WANT_SYNC ||
iclog->ic_state == XLOG_STATE_IOERROR);
error = xlog_state_release_iclog(log, iclog);
xlog_wait_on_iclog(iclog);
@ -2293,7 +2292,11 @@ xlog_write_copy_finish(
*record_cnt = 0;
*data_cnt = 0;
xlog_state_want_sync(log, iclog);
if (iclog->ic_state == XLOG_STATE_ACTIVE)
xlog_state_switch_iclogs(log, iclog, 0);
else
ASSERT(iclog->ic_state == XLOG_STATE_WANT_SYNC ||
iclog->ic_state == XLOG_STATE_IOERROR);
if (!commit_iclog)
goto release_iclog;
spin_unlock(&log->l_icloglock);
@ -3108,11 +3111,12 @@ xlog_ungrant_log_space(
}
/*
* This routine will mark the current iclog in the ring as WANT_SYNC
* and move the current iclog pointer to the next iclog in the ring.
* When this routine is called from xlog_state_get_iclog_space(), the
* exact size of the iclog has not yet been determined. All we know is
* that every data block. We have run out of space in this log record.
* Mark the current iclog in the ring as WANT_SYNC and move the current iclog
* pointer to the next iclog in the ring.
*
* When called from xlog_state_get_iclog_space(), the exact size of the iclog
* has not yet been determined, all we know is that we have run out of space in
* the current iclog.
*/
STATIC void
xlog_state_switch_iclogs(
@ -3121,6 +3125,8 @@ xlog_state_switch_iclogs(
int eventual_size)
{
ASSERT(iclog->ic_state == XLOG_STATE_ACTIVE);
assert_spin_locked(&log->l_icloglock);
if (!eventual_size)
eventual_size = iclog->ic_offset;
iclog->ic_state = XLOG_STATE_WANT_SYNC;
@ -3362,26 +3368,6 @@ xfs_log_force_lsn(
return ret;
}
/*
* Called when we want to mark the current iclog as being ready to sync to
* disk.
*/
STATIC void
xlog_state_want_sync(
struct xlog *log,
struct xlog_in_core *iclog)
{
assert_spin_locked(&log->l_icloglock);
if (iclog->ic_state == XLOG_STATE_ACTIVE) {
xlog_state_switch_iclogs(log, iclog, 0);
} else {
ASSERT(iclog->ic_state == XLOG_STATE_WANT_SYNC ||
iclog->ic_state == XLOG_STATE_IOERROR);
}
}
/*****************************************************************************
*
* TICKET functions