Commit a09a0a70 authored by Liu Bo's avatar Liu Bo Committed by Chris Mason

Btrfs: get better concurrency for snapshot-aware defrag work

Using spinning case instead of blocking will result in better concurrency
overall.
Signed-off-by: default avatarLiu Bo <bo.li.liu@oracle.com>
Signed-off-by: default avatarJosef Bacik <jbacik@fusionio.com>
Signed-off-by: default avatarChris Mason <chris.mason@fusionio.com>
parent de3cb945
...@@ -2312,6 +2312,7 @@ static noinline int relink_extent_backref(struct btrfs_path *path, ...@@ -2312,6 +2312,7 @@ static noinline int relink_extent_backref(struct btrfs_path *path,
key.type = BTRFS_EXTENT_DATA_KEY; key.type = BTRFS_EXTENT_DATA_KEY;
key.offset = start; key.offset = start;
path->leave_spinning = 1;
if (merge) { if (merge) {
struct btrfs_file_extent_item *fi; struct btrfs_file_extent_item *fi;
u64 extent_len; u64 extent_len;
...@@ -2368,6 +2369,7 @@ static noinline int relink_extent_backref(struct btrfs_path *path, ...@@ -2368,6 +2369,7 @@ static noinline int relink_extent_backref(struct btrfs_path *path,
btrfs_mark_buffer_dirty(leaf); btrfs_mark_buffer_dirty(leaf);
inode_add_bytes(inode, len); inode_add_bytes(inode, len);
btrfs_release_path(path);
ret = btrfs_inc_extent_ref(trans, root, new->bytenr, ret = btrfs_inc_extent_ref(trans, root, new->bytenr,
new->disk_len, 0, new->disk_len, 0,
...@@ -2381,6 +2383,7 @@ static noinline int relink_extent_backref(struct btrfs_path *path, ...@@ -2381,6 +2383,7 @@ static noinline int relink_extent_backref(struct btrfs_path *path,
ret = 1; ret = 1;
out_free_path: out_free_path:
btrfs_release_path(path); btrfs_release_path(path);
path->leave_spinning = 0;
btrfs_end_transaction(trans, root); btrfs_end_transaction(trans, root);
out_unlock: out_unlock:
unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start, lock_end, unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start, lock_end,
......
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