From e015640f9c4fa2417dcc3bbbb3b2b61ad4059ab0 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Wed, 16 Apr 2008 11:15:20 -0400 Subject: Btrfs: Write bio checksumming outside the FS mutex This significantly improves streaming write performance by allowing concurrency in the data checksumming. Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'fs/btrfs/inode.c') diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 457daf725d29..3e1f21c632c1 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -330,14 +330,23 @@ int __btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio, struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_trans_handle *trans; int ret = 0; + char *sums = NULL; + + ret = btrfs_csum_one_bio(root, bio, &sums); + BUG_ON(ret); mutex_lock(&root->fs_info->fs_mutex); trans = btrfs_start_transaction(root, 1); + btrfs_set_trans_block_group(trans, inode); - btrfs_csum_file_blocks(trans, root, inode, bio); + btrfs_csum_file_blocks(trans, root, inode, bio, sums); + ret = btrfs_end_transaction(trans, root); BUG_ON(ret); mutex_unlock(&root->fs_info->fs_mutex); + + kfree(sums); + return btrfs_map_bio(root, rw, bio, mirror_num); } -- cgit v1.2.3