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xfs: separate log cleaning from log quiesce

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Log quiesce is currently associated with cleaning the log, which is
accomplished by writing an unmount record as the last step of the
quiesce sequence. The quiesce codepath is a bit convoluted in this
regard due to how it is reused from various contexts. In preparation
to create separate log cleaning and log covering interfaces, lift
the write of the unmount record into a new cleaning helper and call
that wherever xfs_log_quiesce() is currently invoked. No functional
changes.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Brian Foster 2021-01-22 16:48:21 -08:00 committed by Darrick J. Wong
parent 37444fc4cc
commit 9e54ee0fc9
3 changed files with 9 additions and 2 deletions
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8
fs/xfs/xfs_log.c
View File

@ -957,7 +957,13 @@ xfs_log_quiesce(
xfs_buftarg_wait(mp->m_ddev_targp);
xfs_buf_lock(mp->m_sb_bp);
xfs_buf_unlock(mp->m_sb_bp);
}
void
xfs_log_clean(
struct xfs_mount *mp)
{
xfs_log_quiesce(mp);
xfs_log_unmount_write(mp);
}
@ -972,7 +978,7 @@ void
xfs_log_unmount(
struct xfs_mount *mp)
{
xfs_log_quiesce(mp);
xfs_log_clean(mp);
xfs_buftarg_drain(mp->m_ddev_targp);

1
fs/xfs/xfs_log.h
View File

@ -139,6 +139,7 @@ bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
void xfs_log_work_queue(struct xfs_mount *mp);
void xfs_log_quiesce(struct xfs_mount *mp);
void xfs_log_clean(struct xfs_mount *mp);
bool xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t);
bool xfs_log_in_recovery(struct xfs_mount *);

2
fs/xfs/xfs_super.c
View File

@ -897,7 +897,7 @@ xfs_quiesce_attr(
if (error)
xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
"Frozen image may not be consistent.");
xfs_log_quiesce(mp);
xfs_log_clean(mp);
}
/*