Btrfs: Avoid superfluous tree-log writeout
authorYan, Zheng <zheng.yan@oracle.com>
Thu, 12 Nov 2009 09:33:26 +0000 (09:33 +0000)
committerChris Mason <chris.mason@oracle.com>
Wed, 16 Dec 2009 02:24:25 +0000 (21:24 -0500)
commit8cef4e160d74920ad1725f58c89fd75ec4c4ac38
treec1592369c7085e75d67a1709438a4f56351b2348
parent22763c5cf3690a681551162c15d34d935308c8d7
Btrfs: Avoid superfluous tree-log writeout

We allow two log transactions at a time, but use same flag
to mark dirty tree-log btree blocks. So we may flush dirty
blocks belonging to newer log transaction when committing a
log transaction. This patch fixes the issue by using two
flags to mark dirty tree-log btree blocks.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/disk-io.c
fs/btrfs/extent-tree.c
fs/btrfs/transaction.c
fs/btrfs/transaction.h
fs/btrfs/tree-log.c