diff options
| author | Bob Peterson <rpeterso@redhat.com> | 2021-02-18 09:07:21 -0500 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2021-02-23 19:01:42 +0100 |
| commit | 17d77684088510df84ff8285982d0eed52cd5890 (patch) | |
| tree | 5107251c1bd18a06be6bd3675de7c627ff0ab5fb /fs | |
| parent | 803074ad77b91e270c1ce90793a924cdb4547162 (diff) | |
gfs2: Don't get stuck with I/O plugged in gfs2_ail1_flush
In gfs2_ail1_flush, we're using I/O plugging to give the block layer a
better chance of merging I/O requests. If we're too aggressive here, we
can end up waiting on I/O to complete while still plugged. Fix that in
a way similar to writeback_sb_inodes, except that we can't use
blk_flush_plug because blk_flush_plug_list is not exported.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/gfs2/log.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index a6fbde9f609f..16937ebb2a3e 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -91,7 +91,7 @@ void gfs2_remove_from_ail(struct gfs2_bufdata *bd) static int gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct writeback_control *wbc, - struct gfs2_trans *tr) + struct gfs2_trans *tr, struct blk_plug *plug) __releases(&sdp->sd_ail_lock) __acquires(&sdp->sd_ail_lock) { @@ -133,6 +133,11 @@ __acquires(&sdp->sd_ail_lock) continue; spin_unlock(&sdp->sd_ail_lock); ret = generic_writepages(mapping, wbc); + if (need_resched()) { + blk_finish_plug(plug); + cond_resched(); + blk_start_plug(plug); + } spin_lock(&sdp->sd_ail_lock); if (ret == -ENODATA) /* if a jdata write into a new hole */ ret = 0; /* ignore it */ @@ -207,7 +212,7 @@ restart: list_for_each_entry_reverse(tr, head, tr_list) { if (wbc->nr_to_write <= 0) break; - ret = gfs2_ail1_start_one(sdp, wbc, tr); + ret = gfs2_ail1_start_one(sdp, wbc, tr, &plug); if (ret) { if (ret == -EBUSY) goto restart; |