Add support for delayed_ref to handle dedup_hash.
Signed-off-by: Wang Xiaoguang <wangxg.fnst@xxxxxxxxxxxxxx>
Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
---
v3:
Newly introduced.
---
fs/btrfs/ctree.h | 4 +++-
fs/btrfs/delayed-ref.c | 3 ++-
fs/btrfs/delayed-ref.h | 9 ++++++++-
fs/btrfs/extent-tree.c | 17 ++++++++++++-----
fs/btrfs/inode.c | 2 +-
5 files changed, 26 insertions(+), 9 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 450790b..aa7f5fb 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -48,6 +48,7 @@ extern struct kmem_cache *btrfs_bit_radix_cachep;
extern struct kmem_cache *btrfs_path_cachep;
extern struct kmem_cache *btrfs_free_space_cachep;
struct btrfs_ordered_sum;
+struct btrfs_dedup_hash;
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
#define STATIC noinline
@@ -3436,7 +3437,8 @@ int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 root_objectid, u64 owner,
u64 offset, u64 ram_bytes,
- struct btrfs_key *ins);
+ struct btrfs_key *ins,
+ struct btrfs_dedup_hash *hash);
int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 root_objectid, u64 owner, u64 offset,
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 94609ec..fb9f47b 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -812,7 +812,7 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
u64 bytenr, u64 num_bytes,
u64 parent, u64 ref_root,
u64 owner, u64 offset, u64 reserved, int action,
- int atomic)
+ int atomic, struct btrfs_dedup_hash *hash)
{
struct btrfs_delayed_data_ref *ref;
struct btrfs_delayed_ref_head *head_ref;
@@ -846,6 +846,7 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
}
head_ref->extent_op = NULL;
+ ref->hash = hash;
delayed_refs = &trans->transaction->delayed_refs;
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index 8928fe7..d67766b 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -24,6 +24,7 @@
#define BTRFS_ADD_DELAYED_EXTENT 3 /* record a full extent allocation */
#define BTRFS_UPDATE_DELAYED_HEAD 4 /* not changing ref count on head ref */
+struct btrfs_dedup_hash;
/*
* XXX: Qu: I really hate the design that ref_head and tree/data ref shares the
* same ref_node structure.
@@ -152,6 +153,12 @@ struct btrfs_delayed_data_ref {
u64 parent;
u64 objectid;
u64 offset;
+
+ /*
+ * For dedup hash miss case, to add it into dedup tree at
+ * run_delayed_ref() time.
+ */
+ struct btrfs_dedup_hash *hash;
};
struct btrfs_delayed_ref_root {
@@ -249,7 +256,7 @@ int btrfs_add_delayed_data_ref(struct btrfs_fs_info *fs_info,
u64 bytenr, u64 num_bytes,
u64 parent, u64 ref_root,
u64 owner, u64 offset, u64 reserved, int action,
- int atomic);
+ int atomic, struct btrfs_dedup_hash *hash);
int btrfs_add_delayed_qgroup_reserve(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans,
u64 ref_root, u64 bytenr, u64 num_bytes);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index d80f74d..a2e4c2b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -36,6 +36,7 @@
#include "math.h"
#include "sysfs.h"
#include "qgroup.h"
+#include "dedup.h"
#undef SCRAMBLE_DELAYED_REFS
@@ -2089,7 +2090,7 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr,
num_bytes, parent, root_objectid,
owner, offset, 0,
- BTRFS_ADD_DELAYED_REF, 0);
+ BTRFS_ADD_DELAYED_REF, 0, NULL);
}
return ret;
}
@@ -2109,7 +2110,7 @@ int btrfs_inc_extent_ref_atomic(struct btrfs_trans_handle *trans,
return -EINVAL;
return btrfs_add_delayed_data_ref(fs_info, trans, bytenr,
num_bytes, parent, root_objectid,
- owner, offset, 0, BTRFS_ADD_DELAYED_REF, 1);
+ owner, offset, 0, BTRFS_ADD_DELAYED_REF, 1, NULL);
}
static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
@@ -2196,6 +2197,10 @@ static int run_delayed_data_ref(struct btrfs_trans_handle *trans,
parent = ref->parent;
ref_root = ref->root;
+ /* Add dedup hash into hash tree and free it */
+ btrfs_dedup_add(trans, root, ref->hash);
+ kfree(ref->hash);
+
if (node->action == BTRFS_ADD_DELAYED_REF && insert_reserved) {
if (extent_op)
flags |= extent_op->flags_to_set;
@@ -6854,7 +6859,8 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root,
num_bytes,
parent, root_objectid, owner,
offset, 0,
- BTRFS_DROP_DELAYED_REF, 0);
+ BTRFS_DROP_DELAYED_REF, 0,
+ NULL);
}
return ret;
}
@@ -7786,7 +7792,8 @@ int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 root_objectid, u64 owner,
u64 offset, u64 ram_bytes,
- struct btrfs_key *ins)
+ struct btrfs_key *ins,
+ struct btrfs_dedup_hash *hash)
{
int ret;
@@ -7796,7 +7803,7 @@ int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
ins->offset, 0,
root_objectid, owner, offset,
ram_bytes, BTRFS_ADD_DELAYED_EXTENT,
- 0);
+ 0, hash);
return ret;
}
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index f82d1f4..832a733 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2134,7 +2134,7 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans,
ret = btrfs_alloc_reserved_file_extent(trans, root,
root->root_key.objectid,
btrfs_ino(inode), file_pos,
- ram_bytes, &ins);
+ ram_bytes, &ins, NULL);
/*
* Release the reserved range from inode dirty range map, as it is
* already moved into delayed_ref_head
--
2.6.4
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