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Btrfs: don't preallocate metadata blocks during btrfs_search_slot
authorChris Mason <chris.mason@oracle.com>
Fri, 13 Mar 2009 14:24:59 +0000 (10:24 -0400)
committerChris Mason <chris.mason@oracle.com>
Tue, 24 Mar 2009 20:14:25 +0000 (16:14 -0400)
commit9fa8cfe706f9c20067c042a064999d5825a35330
tree8e64281caffcdb3ad5a8ab8bf22bb90483e9e214tree | snapshot (tar.gz zip)
parent8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84commit | diff
Btrfs: don't preallocate metadata blocks during btrfs_search_slot

In order to avoid doing expensive extent management with tree locks held,
btrfs_search_slot will preallocate tree blocks for use by COW without
any tree locks held.

A later commit moves all of the extent allocation work for COW into
a delayed update mechanism, and this preallocation will no longer be
required.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/ctree.c diff | blob | blame | history
fs/btrfs/ctree.h diff | blob | blame | history
fs/btrfs/transaction.c diff | blob | blame | history