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| author | Chris Mason <chris.mason@oracle.com> | 2008-09-11 16:17:57 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:07 -0400 |
| commit | d0c803c4049c5ca322d4795d8b74f28768603e0e (patch) | |
| tree | b4c4f11b2f5938ad183a1771cd0b9e122709e2ff /fs/btrfs/transaction.h | |
| parent | 31ff1cd25d376e8f499d450de177dffadc9e1c56 (diff) | |
| download | op-kernel-dev-d0c803c4049c5ca322d4795d8b74f28768603e0e.zip op-kernel-dev-d0c803c4049c5ca322d4795d8b74f28768603e0e.tar.gz | |
Btrfs: Record dirty pages tree-log pages in an extent_io tree
This is the same way the transaction code makes sure that all the
other tree blocks are safely on disk. There's an extent_io tree
for each root, and any blocks allocated to the tree logs are
recorded in that tree.
At tree-log sync, the extent_io tree is walked to flush down the
dirty pages and wait for them.
The main benefit is less time spent walking the tree log and skipping
clean pages, and getting sequential IO down to the drive.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.h')
| -rw-r--r-- | fs/btrfs/transaction.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index cc63650..eef2cb7 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -99,4 +99,6 @@ int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans, struct btrfs_root *root); void btrfs_throttle(struct btrfs_root *root); int btrfs_record_root_in_trans(struct btrfs_root *root); +int btrfs_write_and_wait_marked_extents(struct btrfs_root *root, + struct extent_io_tree *dirty_pages); #endif |
