From: Dennis Zhou Date: Thu, 2 Jan 2020 21:26:44 +0000 (-0500) Subject: btrfs: make smaller extents more likely to go into bitmaps X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f9bb615af2ba8724bff82376275a14b02eef5eb2;p=linux.git btrfs: make smaller extents more likely to go into bitmaps It's less than ideal for small extents to eat into our extent budget, so force extents <= 32KB into the bitmaps save for the first handful. Reviewed-by: Josef Bacik Signed-off-by: Dennis Zhou Signed-off-by: David Sterba --- diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index f75eb737e713d..30e0108520400 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -2107,8 +2107,8 @@ static bool use_bitmap(struct btrfs_free_space_ctl *ctl, * of cache left then go ahead an dadd them, no sense in adding * the overhead of a bitmap if we don't have to. */ - if (info->bytes <= fs_info->sectorsize * 4) { - if (ctl->free_extents * 2 <= ctl->extents_thresh) + if (info->bytes <= fs_info->sectorsize * 8) { + if (ctl->free_extents * 3 <= ctl->extents_thresh) return false; } else { return false;