diff options
| -rw-r--r-- | fs/xfs/xfs_log.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 7d1355a9cc43..46108ca20d85 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1687,7 +1687,15 @@ xlog_write_iclog( iclog->ic_bio.bi_iter.bi_sector = log->l_logBBstart + bno; iclog->ic_bio.bi_end_io = xlog_bio_end_io; iclog->ic_bio.bi_private = iclog; - iclog->ic_bio.bi_opf = REQ_OP_WRITE | REQ_META | REQ_SYNC | REQ_FUA; + + /* + * We use REQ_SYNC | REQ_IDLE here to tell the block layer the are more + * IOs coming immediately after this one. This prevents the block layer + * writeback throttle from throttling log writes behind background + * metadata writeback and causing priority inversions. + */ + iclog->ic_bio.bi_opf = REQ_OP_WRITE | REQ_META | REQ_SYNC | + REQ_IDLE | REQ_FUA; if (need_flush) iclog->ic_bio.bi_opf |= REQ_PREFLUSH; |