diff options
| author | Brian Foster <bfoster@redhat.com> | 2018-08-01 07:20:31 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-08-02 23:05:13 -0700 |
| commit | 1214f1cf663b0939fbb8f1bccdc74c1d1e452d53 (patch) | |
| tree | 24a8b208cbfff610e5099eab6cdae0f474aad9df /fs/xfs/xfs_trace.h | |
| parent | ce356d64772f920f26cd6c1b02878a737a275638 (diff) | |
| download | blackbird-op-linux-1214f1cf663b0939fbb8f1bccdc74c1d1e452d53.tar.gz blackbird-op-linux-1214f1cf663b0939fbb8f1bccdc74c1d1e452d53.zip | |
xfs: replace dop_low with transaction flag
The dop_low field enables the low free space allocation mode when a
previous allocation has detected difficulty allocating blocks. It
has historically been part of the xfs_defer_ops structure, which
means if enabled, it remains enabled across a set of transactions
until the deferred operations have completed and the dfops is reset.
Now that the dfops is embedded in the transaction, we can save a bit
more space by using a transaction flag rather than a standalone
boolean. Drop the ->dop_low field and replace it with a transaction
flag that is set at the same points, carried across rolling
transactions and cleared on completion of deferred operations. This
essentially emulates the behavior of ->dop_low and so should not
change behavior.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_trace.h')
| -rw-r--r-- | fs/xfs/xfs_trace.h | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index cc6995cfce66..8807f1bb814a 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -2223,19 +2223,16 @@ DECLARE_EVENT_CLASS(xfs_defer_class, __field(dev_t, dev) __field(void *, dop) __field(char, committed) - __field(char, low) __field(unsigned long, caller_ip) ), TP_fast_assign( __entry->dev = mp ? mp->m_super->s_dev : 0; __entry->dop = dop; - __entry->low = dop->dop_low; __entry->caller_ip = caller_ip; ), - TP_printk("dev %d:%d ops %p low %d, caller %pS", + TP_printk("dev %d:%d ops %p caller %pS", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->dop, - __entry->low, (char *)__entry->caller_ip) ) #define DEFINE_DEFER_EVENT(name) \ @@ -2251,19 +2248,16 @@ DECLARE_EVENT_CLASS(xfs_defer_error_class, __field(dev_t, dev) __field(void *, dop) __field(char, committed) - __field(char, low) __field(int, error) ), TP_fast_assign( __entry->dev = mp ? mp->m_super->s_dev : 0; __entry->dop = dop; - __entry->low = dop->dop_low; __entry->error = error; ), - TP_printk("dev %d:%d ops %p low %d err %d", + TP_printk("dev %d:%d ops %p err %d", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->dop, - __entry->low, __entry->error) ) #define DEFINE_DEFER_ERROR_EVENT(name) \ |
