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xfs: initialize log buf I/O completion wq on log alloc

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Log buffer I/O completion passes through the high priority
m_log_workqueue rather than the default metadata buffer workqueue. The
log buffer wq is initialized at I/O submission time. The log buffers are
reused once initialized, however, so this is not necessary.

Initialize the log buffer I/O completion workqueue pointers once when
the log is allocated and log buffers initialized rather than on every
log buffer I/O submission.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Brian Foster 2014-12-24 09:46:23 +11:00 committed by Dave Chinner
parent 97bf6af1f9
commit 96ab7954bc
1 changed files with 4 additions and 4 deletions
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8
fs/xfs/xfs_log.c
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@ -1395,6 +1395,8 @@ xlog_alloc_log(
ASSERT(xfs_buf_islocked(bp));
xfs_buf_unlock(bp);
/* use high priority wq for log I/O completion */
bp->b_ioend_wq = mp->m_log_workqueue;
bp->b_iodone = xlog_iodone;
log->l_xbuf = bp;
@ -1427,6 +1429,8 @@ xlog_alloc_log(
ASSERT(xfs_buf_islocked(bp));
xfs_buf_unlock(bp);
/* use high priority wq for log I/O completion */
bp->b_ioend_wq = mp->m_log_workqueue;
bp->b_iodone = xlog_iodone;
iclog->ic_bp = bp;
iclog->ic_data = bp->b_addr;
@ -1806,8 +1810,6 @@ xlog_sync(
XFS_BUF_ZEROFLAGS(bp);
XFS_BUF_ASYNC(bp);
bp->b_flags |= XBF_SYNCIO;
/* use high priority completion wq */
bp->b_ioend_wq = log->l_mp->m_log_workqueue;
if (log->l_mp->m_flags & XFS_MOUNT_BARRIER) {
bp->b_flags |= XBF_FUA;
@ -1856,8 +1858,6 @@ xlog_sync(
bp->b_flags |= XBF_SYNCIO;
if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)
bp->b_flags |= XBF_FUA;
/* use high priority completion wq */
bp->b_ioend_wq = log->l_mp->m_log_workqueue;
ASSERT(XFS_BUF_ADDR(bp) <= log->l_logBBsize-1);
ASSERT(XFS_BUF_ADDR(bp) + BTOBB(count) <= log->l_logBBsize);