[PATCH 0/2] xfs: don't drain buffer lru on freeze

[Brian Foster <bfoster@redhat.com>]

Hi all,

This series tweaks the xfs_log_quiesce() codepath to lift out the
explicit buffer target LRU draining and isolate it to the unmount path.
It's unnecessary to reclaim all buffers on filesystem freeze or
read-only remount, and this also causes such operations to stall if a
read heavy workload is running in parallel.

Patch 1 is a simple rename and patch 2 implements the functional change.
Thoughts, reviews, flames appreciated.

Brian

Brian Foster (2):
  xfs: rename xfs_wait_buftarg() to xfs_buftarg_drain()
  xfs: don't drain buffer lru on freeze and read-only remount

 fs/xfs/xfs_buf.c   | 30 ++++++++++++++++++++----------
 fs/xfs/xfs_buf.h   | 11 ++++++-----
 fs/xfs/xfs_log.c   |  8 +++++---
 fs/xfs/xfs_mount.c |  4 ++--
 fs/xfs/xfs_trace.h |  2 +-
 5 files changed, 34 insertions(+), 21 deletions(-)

-- 
2.26.2