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| author | Chris Mason | 2008-04-16 17:15:20 +0200 |
|---|---|---|
| committer | Chris Mason | 2008-09-25 17:04:01 +0200 |
| commit | e015640f9c4fa2417dcc3bbbb3b2b61ad4059ab0 (patch) | |
| tree | 2ba41617e428f60ff970abc8a862ab77980b4a20 /fs/btrfs/inode.c | |
| parent | Btrfs: Create a work queue for bio writes (diff) | |
| download | kernel-qcow2-linux-e015640f9c4fa2417dcc3bbbb3b2b61ad4059ab0.tar.gz kernel-qcow2-linux-e015640f9c4fa2417dcc3bbbb3b2b61ad4059ab0.tar.xz kernel-qcow2-linux-e015640f9c4fa2417dcc3bbbb3b2b61ad4059ab0.zip | |
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 <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 11 |
1 files changed, 10 insertions, 1 deletions
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); } |