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| author | Filipe Manana <fdmanana@suse.com> | 2014-07-28 19:34:35 +0100 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-09-17 13:37:55 -0700 |
| commit | 24cdc847d9842bdfd85a005ebc39050bcbc7acba (patch) | |
| tree | 5565771ecb17b466504cf550e7336d1becd6e0f7 /fs/btrfs/ctree.c | |
| parent | d1b00a4711d5b953b13ccc859bc30c447c96860e (diff) | |
| download | linux-0-day-24cdc847d9842bdfd85a005ebc39050bcbc7acba.tar.gz linux-0-day-24cdc847d9842bdfd85a005ebc39050bcbc7acba.tar.xz | |
Btrfs: unlock nodes earlier when inserting items in a btree
In ctree.c:setup_items_for_insert(), we can unlock all nodes in our
path before we process the leaf (shift items and data, adjust data
offsets, etc). This allows for better btree concurrency, as we're
often holding a write lock on at least the node at level 1.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/ctree.c')
| -rw-r--r-- | fs/btrfs/ctree.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 263145b27155c..bd0ae3ec76ff8 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -4738,6 +4738,12 @@ void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, int slot; struct btrfs_map_token token; + if (path->slots[0] == 0) { + btrfs_cpu_key_to_disk(&disk_key, cpu_key); + fixup_low_keys(root, path, &disk_key, 1); + } + btrfs_unlock_up_safe(path, 1); + btrfs_init_map_token(&token); leaf = path->nodes[0]; @@ -4798,12 +4804,6 @@ void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, } btrfs_set_header_nritems(leaf, nritems + nr); - - if (slot == 0) { - btrfs_cpu_key_to_disk(&disk_key, cpu_key); - fixup_low_keys(root, path, &disk_key, 1); - } - btrfs_unlock_up_safe(path, 1); btrfs_mark_buffer_dirty(leaf); if (btrfs_leaf_free_space(root, leaf) < 0) { |