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authorArne Jansen <sensille@gmx.net>2011-05-23 14:30:00 +0200
committerArne Jansen <sensille@gmx.net>2011-10-02 08:48:30 +0200
commit90519d66abbccc251d14719ac76f191f70826e40 (patch)
tree93cad519db9f4f0c97abd89d405ea1e0fec306a7 /fs/btrfs/volumes.h
parentab0fff03055d2d1b01a7581badeba18db9c4f55c (diff)
downloadop-kernel-dev-90519d66abbccc251d14719ac76f191f70826e40.zip
op-kernel-dev-90519d66abbccc251d14719ac76f191f70826e40.tar.gz
btrfs: state information for readahead
Add state information for readahead to btrfs_fs_info and btrfs_device Changes v2: - don't wait in radix_trees - add own set of workers for readahead Reviewed-by: Josef Bacik <josef@redhat.com> Signed-off-by: Arne Jansen <sensille@gmx.net>
Diffstat (limited to 'fs/btrfs/volumes.h')
-rw-r--r--fs/btrfs/volumes.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 6d866db..2a75124 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -92,6 +92,14 @@ struct btrfs_device {
struct btrfs_work work;
struct rcu_head rcu;
struct work_struct rcu_work;
+
+ /* readahead state */
+ spinlock_t reada_lock;
+ atomic_t reada_in_flight;
+ u64 reada_next;
+ struct reada_zone *reada_curr_zone;
+ struct radix_tree_root reada_zones;
+ struct radix_tree_root reada_extents;
};
struct btrfs_fs_devices {
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