From b0331a4c4c339ba7786472b137d6ece9e7f810ec Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Tue, 8 Jan 2008 15:46:31 -0500 Subject: [PATCH] Btrfs: Disable btree reada during extent backref lookups. This reada is generally not effective. Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 68137cd..660b05a 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -630,6 +630,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, if (!path) return -ENOMEM; + path->reada = 0; key.objectid = bytenr; btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY); key.offset = num_bytes; @@ -649,6 +650,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, btrfs_release_path(root->fs_info->extent_root, path); + path->reada = 0; ret = btrfs_insert_extent_backref(trans, root->fs_info->extent_root, path, bytenr, root_objectid, ref_generation, owner, owner_offset); @@ -680,6 +682,7 @@ static int lookup_extent_ref(struct btrfs_trans_handle *trans, WARN_ON(num_bytes < root->sectorsize); path = btrfs_alloc_path(); + path->reada = 0; key.objectid = bytenr; key.offset = num_bytes; btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY); @@ -1240,6 +1243,7 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root if (!path) return -ENOMEM; + path->reada = 0; ret = lookup_extent_backref(trans, extent_root, path, bytenr, root_objectid, ref_generation, -- 2.7.4