diff options
| -rw-r--r-- | fs/btrfs/space-info.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index cab532a48bcd..5ada02e0e629 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -741,6 +741,20 @@ static bool need_preemptive_reclaim(struct btrfs_fs_info *fs_info, global_rsv_size) >= thresh) return false; + used = space_info->bytes_may_use + space_info->bytes_pinned; + + /* The total flushable belongs to the global rsv, don't flush. */ + if (global_rsv_size >= used) + return false; + + /* + * 128MiB is 1/4 of the maximum global rsv size. If we have less than + * that devoted to other reservations then there's no sense in flushing, + * we don't have a lot of things that need flushing. + */ + if (used - global_rsv_size <= SZ_128M) + return false; + /* * We have tickets queued, bail so we don't compete with the async * flushers. |