summaryrefslogtreecommitdiffstats
path: root/fs/btrfs/ctree.h
diff options
context:
space:
mode:
authorChris Mason <chris.mason@oracle.com>2011-11-06 03:05:08 -0500
committerChris Mason <chris.mason@oracle.com>2011-11-06 03:05:08 -0500
commit531f4b1ae5e0fc8c9b3f03838218e5ea178f80d3 (patch)
tree63efdfe9b192243fefb76be3921b9a2aaa26291e /fs/btrfs/ctree.h
parentc06a0e120a4e381a1c291c1fce3c6155c5791cae (diff)
parent7a26285eea8eb92e0088db011571d887d4551b0f (diff)
downloadop-kernel-dev-531f4b1ae5e0fc8c9b3f03838218e5ea178f80d3.zip
op-kernel-dev-531f4b1ae5e0fc8c9b3f03838218e5ea178f80d3.tar.gz
Merge branch 'for-chris' of git://github.com/sensille/linux into integration
Conflicts: fs/btrfs/ctree.h Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
-rw-r--r--fs/btrfs/ctree.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6bb34fc..b9ba59f 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1074,6 +1074,7 @@ struct btrfs_fs_info {
struct btrfs_workers endio_freespace_worker;
struct btrfs_workers submit_workers;
struct btrfs_workers caching_workers;
+ struct btrfs_workers readahead_workers;
/*
* fixup workers take dirty pages that didn't properly go through
@@ -1158,6 +1159,10 @@ struct btrfs_fs_info {
struct btrfs_delayed_root *delayed_root;
+ /* readahead tree */
+ spinlock_t reada_lock;
+ struct radix_tree_root reada_tree;
+
/* next backup root to be overwritten */
int backup_root_index;
};
@@ -2812,4 +2817,20 @@ int btrfs_scrub_cancel_devid(struct btrfs_root *root, u64 devid);
int btrfs_scrub_progress(struct btrfs_root *root, u64 devid,
struct btrfs_scrub_progress *progress);
+/* reada.c */
+struct reada_control {
+ struct btrfs_root *root; /* tree to prefetch */
+ struct btrfs_key key_start;
+ struct btrfs_key key_end; /* exclusive */
+ atomic_t elems;
+ struct kref refcnt;
+ wait_queue_head_t wait;
+};
+struct reada_control *btrfs_reada_add(struct btrfs_root *root,
+ struct btrfs_key *start, struct btrfs_key *end);
+int btrfs_reada_wait(void *handle);
+void btrfs_reada_detach(void *handle);
+int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb,
+ u64 start, int err);
+
#endif
OpenPOWER on IntegriCloud