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| author | Miao Xie | 2013-07-25 13:22:34 +0200 |
|---|---|---|
| committer | Chris Mason | 2013-09-01 14:04:33 +0200 |
| commit | facc8a2247340a9735fe8cc123c5da2102f5ef1b (patch) | |
| tree | fc6a1ea604e0bd5c3d22da891669e0516d776916 /fs/btrfs/ctree.h | |
| parent | Btrfs: add branch prediction hints in the read page end IO function (diff) | |
| download | kernel-qcow2-linux-facc8a2247340a9735fe8cc123c5da2102f5ef1b.tar.gz kernel-qcow2-linux-facc8a2247340a9735fe8cc123c5da2102f5ef1b.tar.xz kernel-qcow2-linux-facc8a2247340a9735fe8cc123c5da2102f5ef1b.zip | |
Btrfs: don't cache the csum value into the extent state tree
Before applying this patch, we cached the csum value into the extent state
tree when reading some data from the disk, this operation increased the lock
contention of the state tree.
Now, we just store the csum value into the bio structure or other unshared
structure, so we can reduce the lock contention.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index dda60e9f6b89..cbb1263752f8 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3556,12 +3556,14 @@ int btrfs_find_name_in_ext_backref(struct btrfs_path *path, struct btrfs_inode_extref **extref_ret); /* file-item.c */ +struct btrfs_dio_private; int btrfs_del_csums(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 len); int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, struct bio *bio, u32 *dst); int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, - struct bio *bio, u64 logical_offset); + struct btrfs_dio_private *dip, struct bio *bio, + u64 logical_offset); int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 objectid, u64 pos, |